Problem: A number game starts with the number 13. To reach the number 14, a certain number must be added. What is that number?

GPT-4o:

To determine the number that must be added to 13 to reach 14, we can set up the following equation:

\[ 13 + x = 14 \]

To solve for \( x \), we subtract 13 from both sides of the equation:

\[ x = 14 - 13 \]

\[ x = 1 \]

### Answer: 1

Expected answer: 1

Correct? Yes

Problem: A car rental company had a total of 17 cars available in the morning. By the end of the day, they only had 4 cars left. How many cars were rented out during the day?

GPT-4o:

To determine how many cars were rented out during the day, we need to subtract the number of cars left at the end of the day from the total number of cars available in the morning.

Total cars available in the morning: 17
Cars left at the end of the day: 4

Number of cars rented out = Total cars available - Cars left
Number of cars rented out = 17 - 4

### Answer: 13

Expected answer: 13

Correct? Yes

Problem: A butterfly collector managed to catch 13 beautiful butterflies one morning. If at the end of the day there are only 6 butterflies in his collection, how many butterflies flew away during the day?

GPT-4o:

To determine how many butterflies flew away during the day, we need to subtract the number of butterflies remaining at the end of the day from the number of butterflies caught in the morning.

The collector caught 13 butterflies in the morning.
At the end of the day, there are only 6 butterflies left in his collection.

The number of butterflies that flew away is:
\[ 13 - 6 = 7 \]

### Answer: 7

Expected answer: 7

Correct? Yes

Problem: After a birthday party, you see one piece of cake left. If you originally had a whole cake that was cut into h slices, and each slice was equal in size, then how many slices were there in the whole cake, given that 12 pieces have been eaten during the party?

GPT-4o:

To determine the total number of slices in the whole cake, we need to consider the number of slices that have been eaten and the number of slices remaining.

Given:
- 12 pieces have been eaten.
- 1 piece is left.

Let's denote the total number of slices in the whole cake as \( h \).

Since 12 pieces have been eaten and 1 piece is left, the total number of slices \( h \) can be calculated as:
\[ h = 12 \text{ (eaten slices)} + 1 \text{ (remaining slice)} \]

So,
\[ h = 12 + 1 \]
\[ h = 13 \]

### Answer: 13

Expected answer: 13

Correct? Yes

Problem: Anne has a collection of socks. She bought 15 new pairs and now she has a total of 20 pairs of socks. How many pairs did she originally have?

GPT-4o:

To determine how many pairs of socks Anne originally had, we need to subtract the number of new pairs she bought from her current total.

Anne's current total number of pairs of socks is 20.
She bought 15 new pairs.

Let \( x \) be the number of pairs she originally had. Therefore, we can set up the equation:
\[ x + 15 = 20 \]

To find \( x \), we subtract 15 from both sides of the equation:
\[ x = 20 - 15 \]
\[ x = 5 \]

So, Anne originally had 5 pairs of socks.

### Answer: 5

Expected answer: 5

Correct? Yes

Problem: A party decorator started with 8 helium balloons. After several accidents, only 1 balloon remained uninflated. How many balloons did the decorator accidentally inflate?

GPT-4o:

To determine how many balloons the decorator accidentally inflated, we need to subtract the number of uninflated balloons from the total number of balloons the decorator started with.

The decorator started with 8 helium balloons and only 1 balloon remained uninflated. Therefore, the number of balloons that were accidentally inflated is:

\[ 8 - 1 = 7 \]

### Answer: 7

Expected answer: 7

Correct? Yes

Problem: Jane started with 4 pencils. By the end of the day, she had 5 pencils. How many pencils did she find during the day?

GPT-4o:

To determine how many pencils Jane found during the day, we need to subtract the number of pencils she started with from the number of pencils she had at the end of the day.

Jane started with 4 pencils and ended with 5 pencils. 

The number of pencils she found during the day is:
\[ 5 - 4 = 1 \]

### Answer: 1

Expected answer: 1

Correct? Yes

Problem: Oliver the dog has collected a total of 'o' bones in his backyard. If he would give 19 of these bones to his friend, he would be left with only 1 bone. How many bones did Oliver originally have in his backyard?

GPT-4o:

Let's denote the total number of bones Oliver originally had as \( o \).

According to the problem, if Oliver gives 19 bones to his friend, he would be left with only 1 bone. This can be expressed with the equation:
\[ o - 19 = 1 \]

To find the value of \( o \), we need to solve this equation. We do this by adding 19 to both sides of the equation:
\[ o - 19 + 19 = 1 + 19 \]
\[ o = 20 \]

So, Oliver originally had 20 bones in his backyard.

### Answer: 20

Expected answer: 20

Correct? Yes

Problem: A superhero has a base super strength level of 1. However, when our superhero dons their super strength amulet, their strength level enhances to a total of 12 units. How many extra strength units does the super strength amulet provide?

GPT-4o:

To determine how many extra strength units the super strength amulet provides, we need to subtract the base super strength level from the enhanced strength level.

The base super strength level is 1 unit.
The enhanced strength level with the amulet is 12 units.

The extra strength units provided by the amulet can be calculated as follows:
\[ \text{Extra strength units} = \text{Enhanced strength level} - \text{Base strength level} \]
\[ \text{Extra strength units} = 12 - 1 \]
\[ \text{Extra strength units} = 11 \]

### Answer: 11

Expected answer: 11

Correct? Yes

Problem: A train station has 17 trains scheduled for departure in a day. By late evening, only 15 are left to depart. How many trains have already departed during the day?

GPT-4o:

To determine how many trains have already departed, we need to subtract the number of trains left to depart from the total number of trains scheduled for departure.

Total trains scheduled for departure: 17
Trains left to depart: 15

Number of trains that have already departed:
\[ 17 - 15 = 2 \]

### Answer: 2

Expected answer: 2

Correct? Yes

Problem: A pencil factory had 11 pencils ready in the morning. By the end of the day, they had a total of 16 pencils after making a few more. How many more pencils did the factory make during the day?

GPT-4o:

To determine how many more pencils the factory made during the day, we need to subtract the number of pencils they had in the morning from the total number of pencils they had by the end of the day.

The factory started with 11 pencils in the morning and ended with 16 pencils by the end of the day.

We calculate the difference:
\[ 16 - 11 = 5 \]

So, the factory made 5 more pencils during the day.

### Answer: 5

Expected answer: 5

Correct? Yes

Problem: The lifeguard started the day with a certain number of towels, but after handing some out, he only had 10 remaining. If he originally had 9 more than the remaining amount, how many towels did the lifeguard start with?

GPT-4o:

Let's denote the number of towels the lifeguard started with as \( x \).

According to the problem, after handing some out, he had 10 towels remaining. It is also given that he originally had 9 more towels than the remaining amount.

We can set up the equation based on this information:
\[ x = 10 + 9 \]

Now, we solve for \( x \):
\[ x = 19 \]

So, the lifeguard started with 19 towels.

### Answer: 19

Expected answer: 19

Correct? Yes

Problem: There were originally 14 candy bars in the candy jar. After a few hours, there are only 10 candy bars left. How many candy bars were taken?

GPT-4o:

To determine how many candy bars were taken, we need to subtract the number of candy bars left from the original number of candy bars.

Original number of candy bars: 14
Number of candy bars left: 10

Number of candy bars taken = Original number of candy bars - Number of candy bars left
Number of candy bars taken = 14 - 10

### Answer: 4

Expected answer: 4

Correct? Yes

Problem: In a park, there were originally 19 swings. After some use, there were only 14 swings left undamaged. How many swings were damaged?

GPT-4o:

To determine the number of swings that were damaged, we need to subtract the number of undamaged swings from the original number of swings.

Original number of swings: 19
Number of undamaged swings: 14

Number of damaged swings = Original number of swings - Number of undamaged swings
Number of damaged swings = 19 - 14

### Answer: 5

Expected answer: 5

Correct? Yes

Problem: A bottle manufacturing factory had already produced 5 bottles this morning, but their daily goal was to produce 12 bottles. How many more bottles need to be produced to reach the goal?

GPT-4o:

To determine how many more bottles need to be produced to reach the daily goal, we subtract the number of bottles already produced from the daily goal.

The daily goal is 12 bottles.
The number of bottles already produced is 5.

So, the number of additional bottles needed is:
\[ 12 - 5 = 7 \]

### Answer: 7

Expected answer: 7

Correct? Yes

Problem: Samantha has 13 green crayons. In total, she has 15 crayons. How many of her crayons are not green?

GPT-4o:

To determine how many of Samantha's crayons are not green, we need to subtract the number of green crayons from the total number of crayons.

Samantha has 13 green crayons and a total of 15 crayons. Therefore, the number of crayons that are not green is calculated as follows:

\[ 15 - 13 = 2 \]

### Answer: 2

Expected answer: 2

Correct? Yes

Problem: A photography store starts the day with 9 digital cameras in stock. By the end of the day, they have 14 digital cameras in the store after receiving new stock. How many new digital cameras did they receive?

GPT-4o:

To determine how many new digital cameras the store received, we need to find the difference between the number of digital cameras at the end of the day and the number they started with.

The store started with 9 digital cameras and ended the day with 14 digital cameras. 

We calculate the number of new digital cameras received as follows:
\[ \text{New digital cameras received} = \text{Ending stock} - \text{Starting stock} \]
\[ \text{New digital cameras received} = 14 - 9 \]
\[ \text{New digital cameras received} = 5 \]

### Answer: 5

Expected answer: 5

Correct? Yes

Problem: A camper has 4 sleeping bags in their tent. Later on, they find 11 sleeping bags in total after their friends drop off their bags. How many sleeping bags did the camper's friends bring?

GPT-4o:

To determine how many sleeping bags the camper's friends brought, we need to subtract the number of sleeping bags the camper originally had from the total number of sleeping bags found later.

The camper originally had 4 sleeping bags. After the friends dropped off their bags, there were 11 sleeping bags in total.

We calculate the number of sleeping bags the friends brought by subtracting the original number of sleeping bags from the total number:

\[ 11 - 4 = 7 \]

So, the camper's friends brought 7 sleeping bags.

### Answer: 7

Expected answer: 7

Correct? Yes

Problem: A crazy cat lady had 7 cats. After adopting a number of stray cats, her total number of cats increased to 20. How many stray cats did she adopt?

GPT-4o:

To determine how many stray cats the lady adopted, we need to find the difference between the total number of cats she has now and the number of cats she originally had.

She originally had 7 cats.
After adopting stray cats, her total number of cats increased to 20.

We can set up the equation:
\[ \text{Number of stray cats adopted} = \text{Total number of cats now} - \text{Original number of cats} \]

Substituting the given values:
\[ \text{Number of stray cats adopted} = 20 - 7 \]

Calculating the difference:
\[ 20 - 7 = 13 \]

### Answer: 13

Expected answer: 13

Correct? Yes

Problem: Bill found 1 pair of binoculars in his drawer. He then realized that his total number of binoculars is 19 pairs when he added the ones he found in the attic. How many binoculars did Bill find in his attic?

GPT-4o:

To determine how many pairs of binoculars Bill found in his attic, we start by noting that he initially found 1 pair in his drawer. He then realized that his total number of binoculars is 19 pairs after including the ones from the attic.

Let \( x \) be the number of pairs of binoculars Bill found in the attic. According to the problem, the total number of pairs is given by:

\[ 1 + x = 19 \]

To find \( x \), we solve the equation:

\[ x = 19 - 1 \]
\[ x = 18 \]

Therefore, Bill found 18 pairs of binoculars in his attic.

### Answer: 18

Expected answer: 18

Correct? Yes

Problem: In a wildlife sanctuary, at the start of the day, there were 14 elephants hanging around the water hole. By afternoon, the number of elephants increased to 16. How many new elephants arrived at the water hole?

GPT-4o:

To determine how many new elephants arrived at the water hole, we need to find the difference between the number of elephants in the afternoon and the number of elephants at the start of the day.

Initially, there were 14 elephants. By the afternoon, the number increased to 16 elephants.

The number of new elephants that arrived is calculated as follows:
\[ 16 - 14 = 2 \]

### Answer: 2

Expected answer: 2

Correct? Yes

Problem: A mountain climber starts at a point that is m feet high. After climbing downwards for a while, they reach a point that's 10 feet high. If they had climbed down 4 feet to reach this point, how high was the point where they started?

GPT-4o:

Let's denote the starting height of the mountain climber as \( m \) feet.

According to the problem, after climbing down 4 feet, the climber reaches a point that is 10 feet high. This can be expressed with the equation:
\[ m - 4 = 10 \]

To find the starting height \( m \), we need to solve this equation for \( m \):
\[ m - 4 = 10 \]
\[ m = 10 + 4 \]
\[ m = 14 \]

Therefore, the starting height of the mountain climber was 14 feet.

### Answer: 14

Expected answer: 14

Correct? Yes

Problem: The color palette had a total of 12 color options. If 6 of those colors were warm colors, how many were cool colors?

GPT-4o:

To determine the number of cool colors, we need to subtract the number of warm colors from the total number of color options.

Given:
- Total number of color options = 12
- Number of warm colors = 6

We can find the number of cool colors by performing the following subtraction:
\[ \text{Number of cool colors} = \text{Total number of color options} - \text{Number of warm colors} \]
\[ \text{Number of cool colors} = 12 - 6 \]
\[ \text{Number of cool colors} = 6 \]

### Answer: 6

Expected answer: 6

Correct? Yes

Problem: A pirate had 8 shiny gold coins in his treasure chest in the morning. By sunset, he had a total of 14 shiny gold coins in his chest. How many shiny gold coins did the pirate find during the day?

GPT-4o:

To determine how many shiny gold coins the pirate found during the day, we need to subtract the number of coins he had in the morning from the total number of coins he had by sunset.

The pirate started with 8 shiny gold coins in the morning.
By sunset, he had a total of 14 shiny gold coins.

The number of shiny gold coins the pirate found during the day is:
\[ 14 - 8 = 6 \]

### Answer: 6

Expected answer: 6

Correct? Yes

Problem: A turtle starts with 8 pieces of lettuce. After eating some more lettuce, it ends up with a total of 19 pieces of lettuce. How many pieces of lettuce does the turtle eat?

GPT-4o:

To determine how many pieces of lettuce the turtle ate, we need to find the difference between the final amount of lettuce and the initial amount.

The turtle starts with 8 pieces of lettuce and ends up with 19 pieces of lettuce. 

We calculate the difference as follows:
\[ 19 - 8 = 11 \]

So, the turtle ate 11 pieces of lettuce.

### Answer: 11

Expected answer: 11

Correct? Yes

Problem: A river was flowing at a speed of 6 km/hr by late morning. In the early morning, its speed was 4 km/hr less. What was the speed of the river in the early morning?

GPT-4o:

To find the speed of the river in the early morning, we need to subtract 4 km/hr from the speed of the river in the late morning.

Given:
- Speed of the river in the late morning = 6 km/hr
- Speed reduction from late morning to early morning = 4 km/hr

Calculation:
\[ \text{Speed in the early morning} = \text{Speed in the late morning} - \text{Speed reduction} \]
\[ \text{Speed in the early morning} = 6 \, \text{km/hr} - 4 \, \text{km/hr} \]
\[ \text{Speed in the early morning} = 2 \, \text{km/hr} \]

### Answer: 2 km/hr

Expected answer: 2

Correct? Yes

Problem: In a children's alphabet game, there were initially 6 letter blocks. After a while, only 1 letter block remained on the game station. How many letter blocks were removed from the game station?

GPT-4o:

To determine how many letter blocks were removed from the game station, we need to subtract the number of letter blocks that remained from the initial number of letter blocks.

Initially, there were 6 letter blocks.
After a while, only 1 letter block remained.

The number of letter blocks removed is:
\[ 6 - 1 = 5 \]

### Answer: 5

Expected answer: 5

Correct? Yes

Problem: At a party, 3 people decided to leave early. After their departure, 15 people remained at the party. How many people were originally at the party before anyone left?

GPT-4o:

To determine the number of people originally at the party, we need to add the number of people who left to the number of people who remained.

Given:
- 3 people left the party.
- 15 people remained at the party.

We can set up the equation:
\[ \text{Original number of people} = \text{People who remained} + \text{People who left} \]

Substituting the given values:
\[ \text{Original number of people} = 15 + 3 \]

Performing the addition:
\[ \text{Original number of people} = 18 \]

### Answer: 18

Expected answer: 18

Correct? Yes

Problem: Lucy has 9 letters in her mailbox initially. By the end of the day, she receives some more letters and the total number of letters in the mailbox is 19. How many letters does Lucy receive during the day?

GPT-4o:

To determine how many letters Lucy received during the day, we need to subtract the initial number of letters from the total number of letters at the end of the day.

Initial number of letters: 9
Total number of letters at the end of the day: 19

Number of letters received during the day = Total number of letters at the end of the day - Initial number of letters
= 19 - 9
= 10

### Answer: 10

Expected answer: 10

Correct? Yes

Problem: In the food pantry, there were originally 17 cans of beans. Over the course of the day, some cans were distributed to people, and at the end of the day, there were 13 cans left. How many cans of beans were distributed that day?

GPT-4o:

To determine how many cans of beans were distributed, we need to subtract the number of cans left at the end of the day from the original number of cans.

Original number of cans: 17
Number of cans left at the end of the day: 13

Number of cans distributed = Original number of cans - Number of cans left
Number of cans distributed = 17 - 13
Number of cans distributed = 4

### Answer: 4

Expected answer: 4

Correct? Yes

Problem: A sock store started their day with 3 pairs of red socks. During the day, they decided to add more of the same socks following a new shipment. By the end of the day, they had 15 pairs of red socks. How many pairs of red socks did they add to their inventory?

GPT-4o:

To determine how many pairs of red socks were added to the inventory, we need to subtract the initial number of pairs from the final number of pairs.

The store started with 3 pairs of red socks and ended with 15 pairs.

Number of pairs added = Final number of pairs - Initial number of pairs
Number of pairs added = 15 - 3
Number of pairs added = 12

### Answer: 12

Expected answer: 12

Correct? Yes

Problem: A farmer has 9 apple trees in his orchard already. Later, he decides to plant a number of new apple trees. After the planting, the total number of apple trees he has is 18. How many new apple trees did he plant?

GPT-4o:

To determine how many new apple trees the farmer planted, we need to subtract the number of apple trees he originally had from the total number of apple trees after planting.

The farmer originally had 9 apple trees. After planting, he has a total of 18 apple trees.

The number of new apple trees planted is:
\[ 18 - 9 = 9 \]

### Answer: 9

Expected answer: 9

Correct? Yes

Problem: A stationery store displayed 3 pens at the start of the day. By the end of the day, they had 8 pens on the display. How many pens did they add to the display during the day?

GPT-4o:

To determine how many pens were added to the display during the day, we need to find the difference between the number of pens at the end of the day and the number of pens at the start of the day.

The number of pens at the start of the day is 3.
The number of pens at the end of the day is 8.

We subtract the number of pens at the start of the day from the number of pens at the end of the day:
\[ 8 - 3 = 5 \]

Therefore, the store added 5 pens to the display during the day.

### Answer: 5

Expected answer: 5

Correct? Yes

Problem: A marine biologist counts that there are 8 sharks currently swimming around the deep sea observatory. If the observatory initially had 7 sharks, how many new sharks arrived?

GPT-4o:

To determine how many new sharks arrived, we need to subtract the initial number of sharks from the current number of sharks.

Initial number of sharks: 7
Current number of sharks: 8

Number of new sharks arrived = Current number of sharks - Initial number of sharks
Number of new sharks arrived = 8 - 7

### Answer: 1

Expected answer: 1

Correct? Yes

Problem: A kid's slide has 5 steps. By adding some more steps, the total becomes 8. How many steps were added to the slide?

GPT-4o:

To determine how many steps were added to the slide, we need to subtract the original number of steps from the new total number of steps.

The original number of steps is 5.
The new total number of steps is 8.

We calculate the difference:
\[ 8 - 5 = 3 \]

So, 3 steps were added to the slide.

### Answer: 3

Expected answer: 3

Correct? Yes

Problem: Chris has a collection of skateboards. After giving away 4 of his skateboards to friends, he ends up with 8 skateboards left. How many skateboards did Chris have at the beginning?

GPT-4o:

To determine how many skateboards Chris had initially, we need to add the number of skateboards he gave away to the number he has left.

Chris gave away 4 skateboards and has 8 skateboards left. Therefore, the total number of skateboards he had at the beginning is:
\[ 4 + 8 = 12 \]

### Answer: 12

Expected answer: 12

Correct? Yes

Problem: A pirate ship had a certain number of cannons. After a rough sea battle, it was left with 6 cannons. If the ship lost 5 cannons during the fight, how many cannons did it have before the battle?

GPT-4o:

To determine the number of cannons the pirate ship had before the battle, we need to add the number of cannons it lost to the number of cannons it has left.

The ship has 6 cannons left after the battle and it lost 5 cannons during the battle. Therefore, the total number of cannons before the battle is:

\[ 6 \text{ (cannons left)} + 5 \text{ (cannons lost)} = 11 \text{ cannons} \]

### Answer: 11

Expected answer: 11

Correct? Yes

Problem: A police department started the day with 16 patrol cars. As the day went on, some patrol cars were sent out on various assignments. By the afternoon, there were only 10 patrol cars left at the station. How many patrol cars were sent out on assignments?

GPT-4o:

To determine how many patrol cars were sent out on assignments, we need to subtract the number of patrol cars left at the station from the total number of patrol cars at the start of the day.

Starting number of patrol cars: 16
Number of patrol cars left at the station: 10

Number of patrol cars sent out on assignments:
\[ 16 - 10 = 6 \]

### Answer: 6

Expected answer: 6

Correct? Yes

Problem: Initially, there were 12 pillows in a store. By the end of the day, there were only 6 pillows left. How many pillows were sold during the day?

GPT-4o:

To determine how many pillows were sold during the day, we need to subtract the number of pillows left at the end of the day from the initial number of pillows.

Initial number of pillows: 12
Number of pillows left at the end of the day: 6

Number of pillows sold = Initial number of pillows - Number of pillows left
Number of pillows sold = 12 - 6

### Answer: 6

Expected answer: 6

Correct? Yes

Problem: Billy began packing for a camping trip. He already had 4 items in his backpack. By the time he stopped packing, there were 10 items total in his backpack. How many additional items did Billy add to his backpack?

GPT-4o:

To determine how many additional items Billy added to his backpack, we need to subtract the number of items he initially had from the total number of items he ended up with.

Billy initially had 4 items in his backpack. By the time he stopped packing, he had a total of 10 items.

The number of additional items he added is calculated as follows:
\[ \text{Additional items} = \text{Total items} - \text{Initial items} \]
\[ \text{Additional items} = 10 - 4 \]
\[ \text{Additional items} = 6 \]

### Answer: 6

Expected answer: 6

Correct? Yes

Problem: A jungle gym has 8 swings installed. Later in the day, more swings were added and the total number of swings became 20. How many more swings were added to the jungle gym?

GPT-4o:

To determine how many more swings were added to the jungle gym, we need to subtract the initial number of swings from the total number of swings after the addition.

Initially, there were 8 swings. After more swings were added, the total number of swings became 20.

Let's calculate the number of swings added:
\[ \text{Number of swings added} = \text{Total number of swings} - \text{Initial number of swings} \]
\[ \text{Number of swings added} = 20 - 8 \]
\[ \text{Number of swings added} = 12 \]

### Answer: 12

Expected answer: 12

Correct? Yes

Problem: In a wind energy farm, there are 15 wind turbines already operational. The total number of wind turbines in the farm is 17. How many more wind turbines were constructed and added to the farm?

GPT-4o:

To determine how many more wind turbines were constructed and added to the farm, we need to subtract the number of already operational wind turbines from the total number of wind turbines.

Given:
- Total number of wind turbines = 17
- Number of operational wind turbines = 15

We calculate the difference:
\[ 17 - 15 = 2 \]

Thus, 2 more wind turbines were constructed and added to the farm.

### Answer: 2

Expected answer: 2

Correct? Yes

Problem: James owns a juice bar where he had 18 bottles of apple juice. After restocking, he counts a total of 20 bottles. How many bottles of apple juice did he add to the stock?

GPT-4o:

To determine how many bottles of apple juice James added to his stock, we need to subtract the initial number of bottles from the total number of bottles after restocking.

Initial number of bottles: 18
Total number of bottles after restocking: 20

Number of bottles added = Total number of bottles after restocking - Initial number of bottles
Number of bottles added = 20 - 18
Number of bottles added = 2

### Answer: 2

Expected answer: 2

Correct? Yes

Problem: John started his guitar lessons with a collection of certain number of guitar picks. After playing for a while, he noticed that he has only 6 picks left, having lost 1. How many guitar picks did John originally start with?

GPT-4o:

To determine how many guitar picks John originally started with, we need to account for the picks he lost. 

Given:
- John has 6 picks left.
- He lost 1 pick.

Let's denote the original number of guitar picks John had as \( x \).

According to the problem, after losing 1 pick, John has 6 picks left. Therefore, we can set up the following equation:
\[ x - 1 = 6 \]

To find \( x \), we solve the equation:
\[ x = 6 + 1 \]
\[ x = 7 \]

So, John originally started with 7 guitar picks.

### Answer: 7

Expected answer: 7

Correct? Yes

Problem: A florist starts their day with 7 daisies in their display. During the day they add some more daisies and by the end of the day, the total count of daisies is 9. How many daisies did they add during the day?

GPT-4o:

To determine how many daisies the florist added during the day, we need to subtract the initial number of daisies from the final number of daisies.

The initial number of daisies is 7.
The final number of daisies is 9.

The number of daisies added during the day is:
\[ 9 - 7 = 2 \]

### Answer: 2

Expected answer: 2

Correct? Yes

Problem: A firefighter hears a total of 6 alarms in one day. If he had heard 4 alarms before lunch, how many alarms did he hear after lunch?

GPT-4o:

To determine how many alarms the firefighter heard after lunch, we need to subtract the number of alarms he heard before lunch from the total number of alarms he heard in one day.

Given:
- Total number of alarms in one day = 6
- Number of alarms heard before lunch = 4

We can set up the equation:
\[ \text{Number of alarms after lunch} = \text{Total number of alarms} - \text{Number of alarms before lunch} \]

Substituting the given values:
\[ \text{Number of alarms after lunch} = 6 - 4 \]

Performing the subtraction:
\[ \text{Number of alarms after lunch} = 2 \]

### Answer: 2

Expected answer: 2

Correct? Yes

Problem: A crazy cat lady starts the day with 18 cats in her living room. After letting some of them go outside to play, only 17 cats remain in the living room. How many cats went outside to play?

GPT-4o:

To determine how many cats went outside to play, we need to subtract the number of cats remaining in the living room from the initial number of cats.

Initial number of cats in the living room: 18
Number of cats remaining in the living room: 17

Number of cats that went outside to play:
\[ 18 - 17 = 1 \]

### Answer: 1

Expected answer: 1

Correct? Yes

Problem: A small snowman is built using 3 large snowballs. Over time, the snowman grows by an additional number of snowballs and becomes comprised of a total of 4 large snowballs. How many more snowballs were added to the snowman?

GPT-4o:

To determine how many more snowballs were added to the snowman, we start with the initial number of snowballs and compare it to the final number.

Initially, the snowman is built using 3 large snowballs.

After some time, the snowman grows and is comprised of a total of 4 large snowballs.

To find the number of additional snowballs added, we subtract the initial number of snowballs from the final number:
\[ 4 - 3 = 1 \]

Thus, 1 more snowball was added to the snowman.

### Answer: 1

Expected answer: 1

Correct? Yes

Problem: A fruit seller had 14 oranges in his basket. After some time, he found that he had 16 oranges in total after collecting some from his garden. How many oranges did he collect from his garden?

GPT-4o:

To determine how many oranges the fruit seller collected from his garden, we need to subtract the initial number of oranges from the total number of oranges he had after collecting more.

Initial number of oranges: 14
Total number of oranges after collecting: 16

Number of oranges collected from the garden = Total number of oranges - Initial number of oranges
= 16 - 14
= 2

### Answer: 2

Expected answer: 2

Correct? Yes

Problem: At the start of an art project, you already have 13 red crayons in your art box. By the end of the day, after adding some more red crayons, you have a total of 16 red crayons. How many red crayons did you add in during the day?

GPT-4o:

To determine how many red crayons were added during the day, we need to subtract the initial number of red crayons from the total number of red crayons at the end of the day.

Initial number of red crayons: 13
Total number of red crayons at the end of the day: 16

Number of red crayons added = Total number of red crayons at the end of the day - Initial number of red crayons
Number of red crayons added = 16 - 13
Number of red crayons added = 3

### Answer: 3

Expected answer: 3

Correct? Yes

Problem: A puzzle maker had finished creating 11 picture puzzles by the end of last month. This month, he created a few more and now has a total of 20 picture puzzles. How many picture puzzles did the puzzle maker create this month?

GPT-4o:

To determine how many picture puzzles the puzzle maker created this month, we need to subtract the number of puzzles he had at the end of last month from the total number of puzzles he has now.

The puzzle maker had 11 picture puzzles by the end of last month and now has a total of 20 picture puzzles.

Let's calculate the number of puzzles created this month:
\[ \text{Number of puzzles created this month} = \text{Total number of puzzles now} - \text{Number of puzzles at the end of last month} \]
\[ \text{Number of puzzles created this month} = 20 - 11 \]
\[ \text{Number of puzzles created this month} = 9 \]

### Answer: 9

Expected answer: 9

Correct? Yes

Problem: In a garden, there were originally 11 red roses. But by the end of the week, only 1 red rose was left after some were picked. How many red roses were picked from the garden during the week?

GPT-4o:

To determine how many red roses were picked from the garden, we need to subtract the number of red roses left at the end of the week from the original number of red roses.

Original number of red roses: 11
Number of red roses left at the end of the week: 1

Number of red roses picked = Original number of red roses - Number of red roses left
Number of red roses picked = 11 - 1

### Answer: 10

Expected answer: 10

Correct? Yes

Problem: A farmer had 16 apples in his basket. After some time, he noticed that there were only 5 apples left in his basket. How many apples were taken from the basket?

GPT-4o:

To determine how many apples were taken from the basket, we need to subtract the number of apples left from the original number of apples.

Original number of apples: 16
Number of apples left: 5

Number of apples taken = Original number of apples - Number of apples left
Number of apples taken = 16 - 5
Number of apples taken = 11

### Answer: 11

Expected answer: 11

Correct? Yes

Problem: An Unidentified Flying Object (UFO) was initially having 5 alien occupants on board. After some universal travels, the UFO had 8 alien occupants. How many extra aliens joined the UFO during its journey?

GPT-4o:

To determine how many extra aliens joined the UFO during its journey, we need to subtract the initial number of alien occupants from the final number of alien occupants.

Initial number of aliens: 5
Final number of aliens: 8

Number of extra aliens that joined = Final number of aliens - Initial number of aliens
= 8 - 5
= 3

### Answer: 3

Expected answer: 3

Correct? Yes

Problem: A toy store had 13 toy cars at the beginning of the day. By the end of the day, there was only 1 toy car left on the shelf. How many toy cars were sold during the day?

GPT-4o:

To determine how many toy cars were sold during the day, we need to subtract the number of toy cars left at the end of the day from the number of toy cars at the beginning of the day.

Starting number of toy cars: 13
Number of toy cars left at the end of the day: 1

Number of toy cars sold = Starting number of toy cars - Number of toy cars left
Number of toy cars sold = 13 - 1

### Answer: 12

Expected answer: 12

Correct? Yes

Problem: A robot factory had 18 fully operational robots at the beginning of the day. But by the end of the day, there were only 16 operational robots left. How many robots stopped functioning during the day?

GPT-4o:

To determine how many robots stopped functioning during the day, we need to subtract the number of operational robots at the end of the day from the number of operational robots at the beginning of the day.

Starting with 18 operational robots and ending with 16 operational robots, we perform the following calculation:

\[ 18 - 16 = 2 \]

So, 2 robots stopped functioning during the day.

### Answer: 2

Expected answer: 2

Correct? Yes

Problem: A circus has a certain number of tigers. After selling 3 of them to a zoo, they have 8 tigers left. How many tigers did the circus have originally?

GPT-4o:

To determine the original number of tigers the circus had, we need to add the 3 tigers that were sold to the 8 tigers that are left.

Let's denote the original number of tigers as \( x \).

According to the problem:
\[ x - 3 = 8 \]

To find \( x \), we solve the equation by adding 3 to both sides:
\[ x = 8 + 3 \]
\[ x = 11 \]

So, the circus originally had 11 tigers.

### Answer: 11

Expected answer: 11

Correct? Yes

Problem: The tiger population in a nature reserve was originally 15. Over time, perilous conditions led to the demise of some of the tigers, leaving only 5 tigers in the reserve. How many tigers were lost?

GPT-4o:

To determine how many tigers were lost, we need to subtract the number of tigers remaining from the original number of tigers.

Original number of tigers: 15
Number of tigers remaining: 5

Number of tigers lost = Original number of tigers - Number of tigers remaining
Number of tigers lost = 15 - 5

### Answer: 10

Expected answer: 10

Correct? Yes

Problem: The Jackson family has 6 jackets to begin with but they purchased some more at a yard sale. If they now have 12 jackets total, how many jackets did they purchase at the yard sale?

GPT-4o:

To determine how many jackets the Jackson family purchased at the yard sale, we need to find the difference between the total number of jackets they have now and the number of jackets they originally had.

The Jackson family originally had 6 jackets. After purchasing more jackets at the yard sale, they now have a total of 12 jackets.

We can set up the equation:
\[ \text{Original jackets} + \text{Purchased jackets} = \text{Total jackets} \]

Substituting the known values:
\[ 6 + \text{Purchased jackets} = 12 \]

To find the number of jackets purchased, we subtract the original number of jackets from the total number of jackets:
\[ \text{Purchased jackets} = 12 - 6 \]
\[ \text{Purchased jackets} = 6 \]

### Answer: 6

Expected answer: 6

Correct? Yes

Problem: A train initially has 16 cars. Part way through its journey, it detaches some cars and continues on with only 8 cars. How many train cars were detached during the journey?

GPT-4o:

To determine how many train cars were detached during the journey, we need to subtract the number of cars the train continued with from the initial number of cars.

The initial number of cars is 16.
The number of cars the train continued with is 8.

So, the number of cars detached is:
\[ 16 - 8 = 8 \]

### Answer: 8

Expected answer: 8

Correct? Yes

Problem: A jewelry store has 1 bracelet in stock. Later, the store receives a fresh shipment, and the total number of bracelets increases to 4. How many bracelets were in the new shipment?

GPT-4o:

To determine how many bracelets were in the new shipment, we need to subtract the initial number of bracelets from the total number after the shipment.

Initially, the store had 1 bracelet in stock. After the shipment, the total number of bracelets increased to 4.

We calculate the number of bracelets in the new shipment as follows:
\[ \text{Number of bracelets in the new shipment} = \text{Total number of bracelets after shipment} - \text{Initial number of bracelets} \]
\[ \text{Number of bracelets in the new shipment} = 4 - 1 \]
\[ \text{Number of bracelets in the new shipment} = 3 \]

### Answer: 3

Expected answer: 3

Correct? Yes

Problem: A school bus started its morning route with 14 students on board. After dropping off some students at their respective schools, there were only 7 students left on the bus. How many students were dropped off in the morning?

GPT-4o:

To determine how many students were dropped off, we need to subtract the number of students left on the bus from the initial number of students on the bus.

Initial number of students on the bus: 14
Number of students left on the bus: 7

Number of students dropped off = Initial number of students - Number of students left
= 14 - 7
= 7

### Answer: 7

Expected answer: 7

Correct? Yes

Problem: A cheese maker produced 9 pounds of swiss cheese one morning. By the end of the day, the total cheese production was 16 pounds. How much more cheese (in pounds) was produced by the end of the day?

GPT-4o:

To determine how much more cheese was produced by the end of the day, we need to subtract the amount of cheese produced in the morning from the total cheese production by the end of the day.

The total cheese production by the end of the day is 16 pounds.
The cheese production in the morning is 9 pounds.

We calculate the difference:
\[ 16 \text{ pounds} - 9 \text{ pounds} = 7 \text{ pounds} \]

### Answer: 7 pounds

Expected answer: 7

Correct? Yes

Problem: Sarah counted her pillows and found out that she has a total of 6 pillows. If she recalls correctly, 4 of them are stuffed with feathers and the rest are stuffed with foam. How many of her pillows are stuffed with foam?

GPT-4o:

To determine how many of Sarah's pillows are stuffed with foam, we start by noting the total number of pillows and the number of pillows stuffed with feathers.

Sarah has a total of 6 pillows, and 4 of them are stuffed with feathers. To find the number of pillows stuffed with foam, we subtract the number of feather-stuffed pillows from the total number of pillows:

\[ 6 - 4 = 2 \]

Therefore, Sarah has 2 pillows that are stuffed with foam.

### Answer: 2

Expected answer: 2

Correct? Yes

Problem: A binoculars maker started with 7 binoculars in the morning. By late afternoon, she had added few more, making a total of 11 binoculars. How many binoculars did she make in the afternoon?

GPT-4o:

To determine how many binoculars the maker added in the afternoon, we need to subtract the number of binoculars she started with in the morning from the total number of binoculars she had by late afternoon.

Starting number of binoculars in the morning: 7
Total number of binoculars by late afternoon: 11

Number of binoculars made in the afternoon = Total number of binoculars by late afternoon - Starting number of binoculars in the morning
= 11 - 7
= 4

### Answer: 4

Expected answer: 4

Correct? Yes

Problem: In a playground, there are originally 3 balls. As the day progresses, kids bring in some more balls and by the end of day, the total number of balls in the playground is 8. How many balls did kids bring to the playground?

GPT-4o:

To determine how many balls the kids brought to the playground, we need to find the difference between the total number of balls at the end of the day and the original number of balls.

Originally, there were 3 balls in the playground. By the end of the day, there were 8 balls.

We calculate the number of balls brought by the kids as follows:
\[ \text{Number of balls brought} = \text{Total number of balls at the end of the day} - \text{Original number of balls} \]
\[ \text{Number of balls brought} = 8 - 3 \]
\[ \text{Number of balls brought} = 5 \]

### Answer: 5

Expected answer: 5

Correct? Yes

Problem: A fashion designer started with a total of a certain number of blue dresses. After selling 13 of them, there were only 2 left in stock. How many blue dresses did the designer start with?

GPT-4o:

To determine how many blue dresses the fashion designer started with, we need to add the number of dresses sold to the number of dresses left in stock.

The designer sold 13 dresses and had 2 left in stock. Therefore, the total number of blue dresses the designer started with is:

\[ \text{Total number of blue dresses} = \text{Number of dresses sold} + \text{Number of dresses left in stock} \]

\[ \text{Total number of blue dresses} = 13 + 2 \]

\[ \text{Total number of blue dresses} = 15 \]

### Answer: 15

Expected answer: 15

Correct? Yes

Problem: In a party, there were 2 helium balloons floating above a child. Suddenly one of them popped, leaving just 1 balloon. How many balloons popped?

GPT-4o:

To determine how many balloons popped, we start with the initial number of helium balloons, which is 2. When one of them popped, it left just 1 balloon.

So, the number of balloons that popped is:
\[ 2 - 1 = 1 \]

### Answer: 1

Expected answer: 1

Correct? Yes

Problem: A pirate has stashed away 4 of his gold coins and now has only 1 left with him. How many gold coins did the pirate originally have before stashing them away?

GPT-4o:

To determine how many gold coins the pirate originally had, we need to add the number of coins he stashed away to the number of coins he has left.

The pirate stashed away 4 gold coins and has 1 gold coin left with him.

So, the total number of gold coins he originally had is:
\[ 4 + 1 = 5 \]

### Answer: 5

Expected answer: 5

Correct? Yes

Problem: A desk drawer had 6 pens at the beginning of the day. At the end of the day, it acquired a total of 12 pens because some were dropped off in the drawer by office workers. How many pens did office workers drop off in the drawer throughout the day?

GPT-4o:

To determine how many pens were dropped off in the drawer by office workers, we need to find the difference between the number of pens at the end of the day and the number of pens at the beginning of the day.

Initially, there were 6 pens in the drawer. By the end of the day, the total number of pens in the drawer was 12.

We calculate the number of pens dropped off as follows:
\[ \text{Number of pens dropped off} = \text{Total pens at the end of the day} - \text{Initial number of pens} \]
\[ \text{Number of pens dropped off} = 12 - 6 \]
\[ \text{Number of pens dropped off} = 6 \]

### Answer: 6

Expected answer: 6

Correct? Yes

Problem: A shape enthusiast begins with a collection of 15 different types of shapes. Later, she decides to give some away and is left with 11 types of shapes. How many different types of shapes did she give away?

GPT-4o:

To determine how many different types of shapes the enthusiast gave away, we need to subtract the number of shapes she has left from the number she originally had.

Starting with 15 types of shapes and ending with 11 types, we perform the subtraction:

\[ 15 - 11 = 4 \]

Thus, the enthusiast gave away 4 different types of shapes.

### Answer: 4

Expected answer: 4

Correct? Yes

Problem: A student has a backpack that initially contains 3 pencils. Later in the day, the student adds some more pencils to the backpack, bringing the total count to 20 pencils. How many additional pencils did the student put in the backpack?

GPT-4o:

To determine how many additional pencils the student added to the backpack, we need to subtract the initial number of pencils from the total number of pencils after the addition.

Initially, the backpack contains 3 pencils. After adding more pencils, the total count becomes 20 pencils.

Let's denote the number of additional pencils added as \( x \).

The equation representing this situation is:
\[ 3 + x = 20 \]

To find \( x \), we solve for \( x \) by subtracting 3 from both sides of the equation:
\[ x = 20 - 3 \]
\[ x = 17 \]

Therefore, the student added 17 additional pencils to the backpack.

### Answer: 17

Expected answer: 17

Correct? Yes

Problem: A zookeeper has 6 monkeys in one enclosure. Later in the day, some more monkeys are transferred into the enclosure, making a total of 7 monkeys. How many monkeys were transferred?

GPT-4o:

To determine how many monkeys were transferred into the enclosure, we start with the initial number of monkeys and subtract it from the total number of monkeys after the transfer.

Initially, there were 6 monkeys in the enclosure. After the transfer, there were 7 monkeys in total.

The number of monkeys transferred is calculated as follows:
\[ \text{Number of monkeys transferred} = \text{Total number of monkeys} - \text{Initial number of monkeys} \]
\[ \text{Number of monkeys transferred} = 7 - 6 \]
\[ \text{Number of monkeys transferred} = 1 \]

### Answer: 1

Expected answer: 1

Correct? Yes

Problem: You were packing for a camping trip and counted 13 sleeping bags at the start. But when you finished packing, only 1 sleeping bag was left behind. How many sleeping bags did you pack for the trip?

GPT-4o:

To determine how many sleeping bags were packed for the trip, we start with the initial count of sleeping bags and subtract the number left behind.

Initial number of sleeping bags: 13
Number of sleeping bags left behind: 1

Number of sleeping bags packed = Initial number of sleeping bags - Number of sleeping bags left behind
Number of sleeping bags packed = 13 - 1

### Answer: 12

Expected answer: 12

Correct? Yes

Problem: A public park starts the day with 9 benches. By afternoon, they install some new ones making the total number of benches 10. How many new benches were installed?

GPT-4o:

To determine how many new benches were installed, we need to find the difference between the total number of benches after the installation and the initial number of benches.

Initially, there were 9 benches in the park. By the afternoon, the total number of benches increased to 10.

We calculate the number of new benches installed as follows:
\[ \text{Number of new benches} = \text{Total benches after installation} - \text{Initial number of benches} \]
\[ \text{Number of new benches} = 10 - 9 \]
\[ \text{Number of new benches} = 1 \]

### Answer: 1

Expected answer: 1

Correct? Yes

Problem: A mermaid has 9 shimmering scales on her tail. But after a tough underwater race, she realizes that she has lost some, leaving her with just 4 intact scales. How many scales did the mermaid lose during the race?

GPT-4o:

To determine how many scales the mermaid lost during the race, we need to subtract the number of scales she has left from the original number of scales.

The mermaid originally had 9 scales. After the race, she has 4 scales left.

The number of scales lost is calculated as follows:
\[ 9 - 4 = 5 \]

### Answer: 5

Expected answer: 5

Correct? Yes

Problem: A band has prepared 8 songs for a live performance. By the end of the concert, they've played 17 songs, due to audience requests and encore performances. How many additional songs did they end up playing?

GPT-4o:

To determine how many additional songs the band played, we need to subtract the number of songs they initially prepared from the total number of songs they played by the end of the concert.

The band initially prepared 8 songs. By the end of the concert, they played a total of 17 songs.

We calculate the additional songs played as follows:
\[ \text{Additional songs} = \text{Total songs played} - \text{Songs initially prepared} \]
\[ \text{Additional songs} = 17 - 8 \]
\[ \text{Additional songs} = 9 \]

### Answer: 9

Expected answer: 9

Correct? Yes

Problem: A hat maker starts a day with a certain number of wool hats in his shop. By noon, he sold 6 of these hats and was left with 9 hats. How many wool hats did he start the day with?

GPT-4o:

To determine how many wool hats the hat maker started the day with, we need to add the number of hats he sold to the number of hats he had left.

He sold 6 hats and was left with 9 hats. Therefore, the total number of hats he started with is:
\[ 6 + 9 = 15 \]

### Answer: 15

Expected answer: 15

Correct? Yes

Problem: A soap shop has 14 soaps in their inventory at the start of the day. By the end of the day, the total inventory counts to 19 soaps after making some more. How many soaps did they make during the day?

GPT-4o:

To determine how many soaps the shop made during the day, we need to find the difference between the ending inventory and the starting inventory.

Starting inventory: 14 soaps
Ending inventory: 19 soaps

The number of soaps made during the day is calculated as follows:
\[ \text{Soaps made} = \text{Ending inventory} - \text{Starting inventory} \]
\[ \text{Soaps made} = 19 - 14 \]
\[ \text{Soaps made} = 5 \]

### Answer: 5

Expected answer: 5

Correct? Yes

Problem: Sylvia starts making soap with 10 bars from her last huge batch. By the end of the day, she ends up with 14 bars of soap by creating a few new ones. How many new bars of soap did Sylvia make?

GPT-4o:

To determine how many new bars of soap Sylvia made, we need to subtract the number of bars she started with from the number of bars she ended up with.

Sylvia started with 10 bars of soap and ended up with 14 bars of soap.

The number of new bars of soap she made is:
\[ 14 - 10 = 4 \]

### Answer: 4

Expected answer: 4

Correct? Yes

Problem: A rope factory starts the day producing a rope of 13 meters long. By the end of the day, another rope, combined with the first one, makes up a total of 19 meters of rope. How long is the second rope they produced?

GPT-4o:

To find the length of the second rope, we need to subtract the length of the first rope from the total length of both ropes combined.

The first rope is 13 meters long.
The total length of both ropes combined is 19 meters.

So, the length of the second rope is:
\[ 19 \text{ meters} - 13 \text{ meters} = 6 \text{ meters} \]

### Answer: 6 meters

Expected answer: 6

Correct? Yes

Problem: There were 2 beach balls scattered around the beach early in the morning. As the day progressed, there were 12 beach balls all over the beach. How many beach balls did the beach visitors bring with them?

GPT-4o:

To determine how many beach balls the beach visitors brought with them, we need to subtract the initial number of beach balls from the total number of beach balls later in the day.

Initially, there were 2 beach balls on the beach.
Later in the day, there were 12 beach balls.

The number of beach balls brought by the visitors is:
\[ 12 - 2 = 10 \]

### Answer: 10

Expected answer: 10

Correct? Yes

Problem: A group of friends on a camping trip only had 1 piece of firewood left early in the night. By the end of the night, they managed to find and collect 10 pieces of firewood altogether. How many extra pieces of firewood did they find that night?

GPT-4o:

To determine how many extra pieces of firewood the group found, we need to subtract the initial piece of firewood they had from the total number of pieces they ended up with.

Initially, they had 1 piece of firewood. By the end of the night, they had 10 pieces of firewood in total.

The number of extra pieces of firewood they found is:
\[ 10 - 1 = 9 \]

### Answer: 9

Expected answer: 9

Correct? Yes

Problem: You have a music store with 18 guitars in stock. During the day, a customer comes and buys a number of guitars. By the end of the day, you count and find that you have 16 guitars left. How many guitars did the customer buy?

GPT-4o:

To determine how many guitars the customer bought, we start with the initial number of guitars in stock and subtract the number of guitars left at the end of the day.

Initial number of guitars in stock: 18
Number of guitars left at the end of the day: 16

Number of guitars bought by the customer = Initial number of guitars - Number of guitars left
= 18 - 16
= 2

### Answer: 2

Expected answer: 2

Correct? Yes

Problem: A bike shop has 4 mountain bikes on hand at the beginning of the day. By the end of the day, they have a total of 14 mountain bikes, as some new shipments have arrived. How many new mountain bikes were shipped to the shop today?

GPT-4o:

To determine how many new mountain bikes were shipped to the shop today, we need to subtract the initial number of mountain bikes from the total number of mountain bikes at the end of the day.

Initial number of mountain bikes: 4
Total number of mountain bikes at the end of the day: 14

Number of new mountain bikes shipped = Total number of mountain bikes at the end of the day - Initial number of mountain bikes
= 14 - 4
= 10

### Answer: 10

Expected answer: 10

Correct? Yes

Problem: A child starts with 2 blue colored pencils, and then a classmate gives them some more. In the end, they have 3 blue colored pencils. How many colored pencils did their classmate give them?

GPT-4o:

To determine how many blue colored pencils the classmate gave to the child, we can set up the following equation:

Let \( x \) be the number of blue colored pencils given by the classmate.

The child starts with 2 blue colored pencils and ends up with 3 blue colored pencils. Therefore, we can write the equation:
\[ 2 + x = 3 \]

To solve for \( x \), we subtract 2 from both sides of the equation:
\[ x = 3 - 2 \]
\[ x = 1 \]

So, the classmate gave the child 1 blue colored pencil.

### Answer: 1

Expected answer: 1

Correct? Yes

Problem: The campsite initially had 15 tents. By the end of the day, 19 tents were pitched in total. How many more tents were set up during the day?

GPT-4o:

To determine how many more tents were set up during the day, we need to find the difference between the number of tents at the end of the day and the initial number of tents.

Initially, there were 15 tents. By the end of the day, there were 19 tents.

We calculate the difference as follows:
\[ 19 - 15 = 4 \]

Therefore, 4 more tents were set up during the day.

### Answer: 4

Expected answer: 4

Correct? Yes

Problem: A pirate found 7 gold coins in one of the treasure chests. By the end of his looting, he had a total of 16 gold coins. How many gold coins were in the other treasure chests he looted?

GPT-4o:

To determine how many gold coins were in the other treasure chests, we need to subtract the number of gold coins the pirate initially found from the total number of gold coins he had by the end of his looting.

The pirate initially found 7 gold coins in one treasure chest. By the end of his looting, he had a total of 16 gold coins.

We perform the subtraction:
\[ 16 - 7 = 9 \]

So, the number of gold coins in the other treasure chests is 9.

### Answer: 9

Expected answer: 9

Correct? Yes

Problem: You start with 12 dollars in your wallet. By the end of a shopping trip, you find that you now have 16 dollars left in your wallet after receiving some change. How much money in dollars did you receive as change during the trip?

GPT-4o:

To determine how much money you received as change during the shopping trip, we need to calculate the difference between the amount of money you had at the end of the trip and the amount you started with.

You started with 12 dollars and ended with 16 dollars. The change received can be calculated as follows:

\[ \text{Change received} = \text{Final amount} - \text{Initial amount} \]

Substituting the given values:

\[ \text{Change received} = 16 \text{ dollars} - 12 \text{ dollars} \]

\[ \text{Change received} = 4 \text{ dollars} \]

### Answer: 4 dollars

Expected answer: 4

Correct? Yes

Problem: A rope manufacturing task is ongoing. From several short pieces, a worker succeeds in creating a rope that is 17 feet long. If one of these pieces was 11 feet long, how long were the rest of the pieces together?

GPT-4o:

To determine the total length of the rest of the pieces, we need to subtract the length of the known piece from the total length of the rope.

Given:
- Total length of the rope = 17 feet
- Length of one piece = 11 feet

We calculate the length of the rest of the pieces as follows:
\[ \text{Length of the rest of the pieces} = \text{Total length of the rope} - \text{Length of one piece} \]
\[ \text{Length of the rest of the pieces} = 17 \text{ feet} - 11 \text{ feet} \]
\[ \text{Length of the rest of the pieces} = 6 \text{ feet} \]

### Answer: 6 feet

Expected answer: 6

Correct? Yes

Problem: An artist had one blue colored pencil in her collection. After adding a pack of new pencils, she now has 13 colored pencils. How many colored pencils were there in the new pack?

GPT-4o:

To determine how many colored pencils were in the new pack, we need to subtract the number of colored pencils the artist originally had from the total number of colored pencils she has now.

The artist originally had 1 blue colored pencil. After adding the new pack, she now has 13 colored pencils.

Let's denote the number of colored pencils in the new pack as \( x \).

The equation to represent this situation is:
\[ 1 + x = 13 \]

To find \( x \), we subtract 1 from both sides of the equation:
\[ x = 13 - 1 \]
\[ x = 12 \]

Therefore, the new pack contained 12 colored pencils.

### Answer: 12

Expected answer: 12

Correct? Yes

Problem: A musician starts off with 17 guitar strings in his collection. After restringing some guitars, he is left with only 2 strings. How many guitar strings did the musician use?

GPT-4o:

To determine how many guitar strings the musician used, we need to subtract the number of strings he has left from the number he started with.

Starting number of strings: 17
Number of strings left: 2

Number of strings used = Starting number of strings - Number of strings left
Number of strings used = 17 - 2

### Answer: 15

Expected answer: 15

Correct? Yes

Problem: There are 7 colors visible in a typical rainbow. If you have a special prism that shows a total of 13 colors in the rainbow, how many additional colors are visible through the prism?

GPT-4o:

To determine how many additional colors are visible through the special prism, we need to subtract the number of colors in a typical rainbow from the number of colors visible through the prism.

The number of colors in a typical rainbow is 7.
The number of colors visible through the special prism is 13.

Now, we subtract the number of colors in a typical rainbow from the number of colors visible through the prism:
\[ 13 - 7 = 6 \]

### Answer: 6

Expected answer: 6

Correct? Yes

Problem: A full grown giraffe typically grows to a height of x meters. But a young giraffe was just 1 meter shorter than a full grown one when it was 3 meters tall. What is the typical height of a fully grown giraffe in meters?

GPT-4o:

Let's denote the typical height of a fully grown giraffe as \( x \) meters.

According to the problem, a young giraffe was 1 meter shorter than a full grown giraffe when it was 3 meters tall. This can be expressed as:
\[ x - 1 = 3 \]

To find \( x \), we solve the equation:
\[ x - 1 = 3 \]
\[ x = 3 + 1 \]
\[ x = 4 \]

### Answer: 4 meters

Expected answer: 4

Correct? Yes

Problem: In a pencil box, there were initially 10 pencils. Later, a student added some more pencils into the box and the total became 14. How many pencils did the student add to the box?

GPT-4o:

To determine how many pencils the student added to the box, we need to subtract the initial number of pencils from the total number of pencils after the addition.

Initially, there were 10 pencils in the box. After the student added some pencils, the total number of pencils became 14.

Let's denote the number of pencils added by the student as \( x \).

We can set up the equation:
\[ 10 + x = 14 \]

To find \( x \), we subtract 10 from both sides of the equation:
\[ x = 14 - 10 \]
\[ x = 4 \]

Therefore, the student added 4 pencils to the box.

### Answer: 4

Expected answer: 4

Correct? Yes

Problem: A pillow factory has a stock of 14 feather pillows. After a small order is shipped, they have 4 feather pillows left. How many feather pillows were in the shipped order?

GPT-4o:

To determine how many feather pillows were in the shipped order, we need to subtract the number of feather pillows left after the order was shipped from the initial stock.

Initial stock of feather pillows: 14
Feather pillows left after the order: 4

Number of feather pillows in the shipped order:
\[ 14 - 4 = 10 \]

### Answer: 10

Expected answer: 10

Correct? Yes

Problem: A pizzeria has 15 pepperoni pizzas ready to be served. Throughout the day, they bake a number of additional pepperoni pizzas, bringing the total to 16 by the evening. How many additional pepperoni pizzas did they bake throughout the day?

GPT-4o:

To determine how many additional pepperoni pizzas were baked throughout the day, we start with the initial number of pizzas and the total number by the evening.

Initially, the pizzeria has 15 pepperoni pizzas. By the evening, the total number of pepperoni pizzas is 16.

We can find the number of additional pizzas baked by subtracting the initial number from the total number by the evening:

\[ \text{Additional pizzas baked} = \text{Total pizzas by evening} - \text{Initial pizzas} \]

\[ \text{Additional pizzas baked} = 16 - 15 \]

\[ \text{Additional pizzas baked} = 1 \]

### Answer: 1

Expected answer: 1

Correct? Yes

Problem: A band had prepared 11 songs to perform at a concert. However, they only managed to perform 7 songs due to technical problems. How many songs were they not able to perform at the concert?

GPT-4o:

To determine how many songs the band was not able to perform, we need to subtract the number of songs they performed from the total number of songs they had prepared.

The band prepared 11 songs and performed 7 songs. 

So, the number of songs they did not perform is:
\[ 11 - 7 = 4 \]

### Answer: 4

Expected answer: 4

Correct? Yes

Problem: A snowman has a certain number of snowballs stacked to form its shape. If 7 snowballs are removed, only 11 snowballs remain. How many snowballs were used to build the snowman originally?

GPT-4o:

To determine the original number of snowballs used to build the snowman, we start by letting \( x \) represent the original number of snowballs.

According to the problem, if 7 snowballs are removed, 11 snowballs remain. This can be expressed with the equation:
\[ x - 7 = 11 \]

To find \( x \), we solve the equation by adding 7 to both sides:
\[ x - 7 + 7 = 11 + 7 \]
\[ x = 18 \]

Thus, the original number of snowballs used to build the snowman is 18.

### Answer: 18

Expected answer: 18

Correct? Yes

Problem: In underwater kingdom, there were 10 mermaids at the beginning. After a while, there were 20 mermaids. How many new mermaids joined the kingdom?

GPT-4o:

To determine how many new mermaids joined the kingdom, we need to find the difference between the number of mermaids at the beginning and the number of mermaids after a while.

Initially, there were 10 mermaids.
After a while, there were 20 mermaids.

The number of new mermaids that joined is calculated as follows:
\[ 20 - 10 = 10 \]

### Answer: 10

Expected answer: 10

Correct? Yes