🔗 Problem

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

Gemma 2B:

      The number game starts with the number 13 and to reach the number 14, a certain number must be added. The number that must be added is 1. Therefore, the number 13 + 1 = 14.

Expected answer: 1

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Reasoning: The car rental company had 17 cars available in the morning. By the end of the day, they only had 4 cars left. Therefore, they rented out 17-4 = <<17-4=13>>13 cars during the day.
    ### Answer: 13

Expected answer: 13

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Let's say the butterfly collector caught x butterflies during the day.

    At the end of the day, there are 6 butterflies left in the collector's collection, so we can write an equation:

    x + 6 = 13

    Simplifying the equation:

    x = 7

    So, the butterfly collector caught 7 butterflies during the day.

    Therefore, 7 butterflies flew away during the day.

Expected answer: 7

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Let's say the whole cake had h slices.

    We know that 12 pieces have been eaten during the party, so we can set up the equation:

    h - 12 = 1

    Now, we can solve for h:

    h = 13

    So, there were 13 slices in the whole cake.

Expected answer: 13

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Anne had 0 pairs of socks originally.
    She bought 15 new pairs, so she now has a total of 15 + 0 = 15 pairs of socks.
    ### Answer: 15

Expected answer: 5

Correct? No

🔗 Problem

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?

Gemma 2B:

      The decorator accidentally inflated 7 balloons.

    Reasoning:

    1. The decorator started with 8 balloons.
    2. After several accidents, only 1 balloon remained uninflated.
    3. The decorator accidentally inflated 8 - 1 = 7 balloons.

Expected answer: 7

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Jane started with 4 pencils and ended with 5 pencils, so she found 1 pencil during the day.

Expected answer: 1

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Let's say Oliver had x bones in his backyard.

    Oliver gave 19 bones to his friend, so he is left with x - 19 = <<x-19=x-19>>x - 19 bones.

    Since he is left with only 1 bone, we can set up the equation:

    x - 19 = 1

    Solving for x, we get:

    x = 19 + 1

    x = 20

    So, Oliver had 20 bones in his backyard originally.

Expected answer: 20

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      The super strength amulet provides 12 - 1 = <<12-1=11>>11 extra strength units.

Expected answer: 11

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Reasoning:

    Let x be the number of trains that have already departed during the day.

    We know that 15 trains are left to depart, so the total number of trains that have departed is 15 + x.

    We also know that the total number of trains scheduled for departure is 17, so we can set up the equation:

    15 + x = 17

    Solving for x, we get:

    x = 17 - 15
    x = 2

    Therefore, 2 trains have already departed during the day.

Expected answer: 2

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Reasoning: The factory had 11 pencils in the morning and had a total of 16 pencils at the end of the day. To find out 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 at the end of the day.

    16 - 11 = 5

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

    ### Answer: 5

Expected answer: 5

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Let's say the lifeguard started with x towels.

    We know that he had 10 towels left at the end of the day, so we can set up the equation:

    x - 10 = 10

    Simplifying the equation:

    x = 20

    So, the lifeguard started with 20 towels.

Expected answer: 19

Correct? No

🔗 Problem

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?

Gemma 2B:

      Let's use the information given in the problem to create an equation. Let x be the number of candy bars taken.

    We know that there were originally 14 candy bars in the candy jar. After a few hours, there are only 10 candy bars left. This means that x + 10 = 14.

    Simplifying the equation, we get:

    x + 10 = 14

    Subtracting 10 from both sides gives us:

    x = 4

    So, 4 candy bars were taken.

Expected answer: 4

Correct? Yes

🔗 Problem

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

Gemma 2B:

      There were originally 19 swings, and after some use, there were only 14 swings left undamaged. This means that 5 swings were damaged.

Expected answer: 5

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      To reach the daily goal of producing 12 bottles, the factory needs to produce 12 - 5 = <<12-5=7>>7 more bottles.

Expected answer: 7

Correct? Yes

🔗 Problem

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

Gemma 2B:

      Samantha has 13 green crayons, and 15 crayons in total.

    To find out how many of her crayons are not green, we need to subtract the number of green crayons from the total number of crayons.

    15 - 13 = 2

    Therefore, Samantha has 2 crayons that are not green.

Expected answer: 2

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Reasoning: The store started the day with 9 digital cameras in stock, and by the end of the day, they had 14 digital cameras in the store after receiving new stock. Therefore, the number of new digital cameras received is 14 - 9 = <<14-9=5>>5.

    ### Answer: 5

Expected answer: 5

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      The camper's friends brought 11 - 4 = <<11-4=7>>7 sleeping bags.

Expected answer: 7

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Let's use the information that the crazy cat lady had 7 cats initially and then adopted 13 stray cats.

    We know that the total number of cats is 20, so we can set up the equation:

    7 + 13 = 20

    Solving for the number of stray cats adopted, we get:

    13 = 20 - 7

    13 = 13

    So, the crazy cat lady adopted 13 stray cats.

Expected answer: 13

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Bill found 1 pair of binoculars in his attic, so he found 19 pairs - 1 = 18 pairs of binoculars in his attic.

Expected answer: 18

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Reasoning:

    At the start of the day, there were 14 elephants hanging around the water hole.
    By afternoon, the number of elephants increased to 16.

    So, the number of elephants that arrived at the water hole is:
    16 - 14 = <<16-14=2>>2

    Therefore, 2 new elephants arrived at the water hole.

Expected answer: 2

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Let's call the starting point "A".

    The climber started 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, then the point where they started must be:

    m - 4 = A

    So, the point where the climber started is m - 4 feet high.

Expected answer: 14

Correct? No

🔗 Problem

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

Gemma 2B:

      If 6 of the 12 color options were warm colors, then the number of cool colors would be 12 - 6 = <<12-6=6>>6.

Expected answer: 6

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Reasoning: The pirate found 14 - 8 = <<14-8=6>>6 shiny gold coins during the day.

Expected answer: 6

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      The turtle starts with 8 pieces of lettuce and ends up with 19 pieces of lettuce, so it eats 19-8 = <<19-8=11>>11 pieces of lettuce.

Expected answer: 11

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Let's call the speed of the river in the early morning "x".

    We know that the speed of the river in the late morning is 6 km/hr, so we can set up the equation:

    6 = x + 4

    Now, we can solve for "x" by subtracting 4 from both sides of the equation:

    2 = x

    So, the speed of the river in the early morning was 2 km/hr.

Expected answer: 2

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      In the children's alphabet game, 6 letter blocks were initially on the game station. After a while, only 1 letter block remained on the game station. Therefore, 6 - 1 = 5 letter blocks were removed from the game station.

Expected answer: 5

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Let's call the original number of people at the party "x".

    We know that 3 people left the party, so the new number of people at the party is:

    x - 3

    We also know that 15 people remained at the party, so the new number of people at the party is:

    x - 3 + 15

    Simplifying, we get:

    x - 3 + 15 = x + 12

    Solving for x, we get:

    x = 12

    So, there were 12 people originally at the party before anyone left.

Expected answer: 18

Correct? No

🔗 Problem

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?

Gemma 2B:

      Let's call the number of letters Lucy receives during the day "x".

    We know that the total number of letters in the mailbox is 19, so we can write an equation:

    9 + x = 19

    We also know that Lucy had 9 letters in her mailbox initially, so we can substitute 9 for "x" in the equation:

    9 + x = 19

    Subtracting 9 from both sides gives us:

    x = 10

    Therefore, Lucy receives 10 letters during the day.

Expected answer: 10

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Let's use the information given in the problem to create an equation.

    Let x be the number of cans of beans distributed that day.

    We know that the original number of cans of beans was 17.

    We also know that the number of cans left at the end of the day was 13.

    So, we can set up the equation:

    17 - x = 13

    To solve for x, we can add 17 to both sides of the equation:

    17 + x = 13 + 17

    This simplifies to:

    x = 6

    So, 6 cans of beans were distributed that day.

Expected answer: 4

Correct? No

🔗 Problem

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?

Gemma 2B:

      At the start of the day, the sock store had 3 pairs of red socks.

    By the end of the day, the sock store had 15 pairs of red socks.

    So, the number of pairs of red socks added to the inventory is:

    15 - 3 = 12

    Therefore, the sock store added 12 pairs of red socks to their inventory.

Expected answer: 12

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Let's use the information given in the problem to create an equation.

    Let x be the number of new apple trees the farmer planted.

    We know that the total number of apple trees the farmer has after planting x new trees is 18.

    So, we can write the equation:

    9 + x = 18

    To solve for x, we can subtract 9 from both sides of the equation:

    x = 18 - 9

    x = 9

    Therefore, the farmer planted 9 new apple trees.

Expected answer: 9

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Reasoning: The number of pens added to the display during the day is 8 - 3 = <<8-3=5>>5 pens.

Expected answer: 5

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      The marine biologist counts that there are 8 sharks currently swimming around the deep sea observatory. If the observatory initially had 7 sharks, then the number of new sharks that arrived is 8 - 7 = 1.

Expected answer: 1

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      The slide had 5 steps originally. Adding 3 steps (8 - 5 = 3) to the slide makes the total 8 steps. Therefore, 3 steps were added to the slide.

Expected answer: 3

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Let's say Chris had x skateboards at the beginning.

    We know that he gave away 4 skateboards to friends, so he now has x - 4 = 8 skateboards left.

    We also know that he started with x skateboards, so we can set up the equation:

    x - 4 = 8

    To solve for x, we can add 4 to both sides of the equation:

    x = 8 + 4

    x = 12

    So, Chris had 12 skateboards at the beginning.

Expected answer: 12

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Let's use the information given in the problem to create an equation.

    Let x be the number of cannons the ship had before the battle.

    We know that the ship had 6 cannons left after the battle, so we can set up the equation:

    x - 5 = 6

    We also know that the ship lost 5 cannons during the fight, so we can subtract 5 from both sides of the equation:

    x - 5 - 5 = 6 - 5

    Simplifying the equation:

    x - 10 = 1

    Solving for x:

    x = 11

    So, the ship had 11 cannons before the battle.

Expected answer: 11

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Let's say that x patrol cars were sent out on assignments.

    At the beginning of the day, there were 16 patrol cars at the station.

    By the end of the day, there were 10 patrol cars left at the station.

    So, we can set up the equation:

    16 - x = 10

    To solve for x, we can add 16 to both sides of the equation:

    16 + x = 10 + 16

    This simplifies to:

    22 = 26

    This is a contradiction, since 22 is not equal to 26. Therefore, there were no patrol cars sent out on assignments.

Expected answer: 6

Correct? No

🔗 Problem

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?

Gemma 2B:

      Let's use the information given in the problem to create an equation.

    At the beginning of the day, there were 12 pillows.
    By the end of the day, there were only 6 pillows left.

    So, we can set up the equation:

    12 - x = 6

    where x is the number of pillows sold during the day.

    To solve for x, we can add 12 to both sides of the equation:

    12 + x = 6 + 12

    This simplifies to:

    x = 6

    So, 6 pillows were sold during the day.

Expected answer: 6

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Let's use the information given in the problem to create an equation.

    Let x be the number of additional items that Billy added to his backpack.

    We know that Billy already had 4 items in his backpack, so the total number of items in his backpack before he started packing was 4.

    By the time he stopped packing, there were 10 items in his backpack. So, the total number of items in his backpack after he stopped packing was 10 + 4 = 14.

    Now, let's set up the equation:

    10 + x = 14

    Subtracting 4 from both sides gives us:

    10 + x - 4 = 10

    x = 6

    So, Billy added 6 additional items to his backpack.

Expected answer: 6

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      The total number of swings in the jungle gym is 20.
    The number of swings in the jungle gym was 8 in the beginning.
    The number of swings added to the jungle gym is 20 - 8 = 12.
    ### Answer: 12

Expected answer: 12

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      There are 17 wind turbines in the farm, and 15 are already operational. Therefore, there are 2 more wind turbines that were constructed and added to the farm.

Expected answer: 2

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      James added 20-18 = <<20-18=2>>2 bottles of apple juice to the stock.

Expected answer: 2

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Let's say John started with x guitar picks.

    After playing for a while, he lost 1 pick, so he has x-1 picks left.

    We know that he has 6 picks left, so we can set up the equation:

    x-1 = 6

    To solve for x, we can add 1 to both sides of the equation:

    x = 6+1

    x = 7

    Therefore, John originally started with 7 guitar picks.

Expected answer: 7

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Reasoning: The total count of daisies at the end of the day is 9, and the starting count is 7. So, the number of daisies added during the day is 9-7 = <<9-7=2>>2.

Expected answer: 2

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Let's say the firefighter heard x alarms before lunch. Then, he heard 6 - x alarms after lunch.

    We know that the total number of alarms he heard in one day is 6. So, we can set up the equation:

    x + (6 - x) = 6

    Simplifying the equation:

    2x - 6 = 0

    Solving for x:

    x = 6/2

    x = 3

    So, the firefighter heard 3 alarms after lunch.

Expected answer: 2

Correct? No

🔗 Problem

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?

Gemma 2B:

      Reasoning: The number of cats that went outside to play is the difference between the original number of cats (18) and the number of cats remaining in the living room after they have been let outside (17).

    18 - 17 = 1

    Therefore, 1 cat went outside to play.

    ### Answer: 1

Expected answer: 1

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      The snowman started with 3 large snowballs and then grew by an additional number of snowballs to become comprised of 4 large snowballs. Therefore, the snowman grew by 1 large snowball.

    So, the number of snowballs added to the snowman was 1.

Expected answer: 1

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Let's use the information that the fruit seller had 14 oranges in his basket at first.

    After some time, he found that he had 16 oranges in total.

    So, he must have collected 2 oranges from his garden.

    ### Answer: 2

Expected answer: 2

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Reasoning:

    At the start of the day, you had 13 red crayons.
    By the end of the day, you had 16 red crayons.

    So, you added 3 red crayons during the day.

    ### Answer: 3

Expected answer: 3

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      The puzzle maker created 20 - 11 = <<20-11=9>>9 picture puzzles this month.

Expected answer: 9

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Let's use the information that there were originally 11 red roses and that only 1 red rose was left at the end of the week. We can set up an equation to represent this information:

    11 - x = 1

    where x is the number of red roses picked from the garden during the week.

    To solve for x, we can subtract 11 from both sides of the equation:

    11 - x - 11 = 1 - 11

    This simplifies to:

    -x = 10

    x = -10

    So, 10 red roses were picked from the garden during the week.

Expected answer: 10

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Reasoning: The farmer had 16 apples in his basket initially.
    He took 16-5 = <<16-5=11>>11 apples from the basket.
    ### Answer: 11

Expected answer: 11

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      The UFO had 8 alien occupants at the end of its journey, which means it had 8 - 5 = <<8-5=3>>3 extra aliens join the UFO during its journey.

Expected answer: 3

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Reasoning:

    At the beginning of the day, there were 13 toy cars.
    By the end of the day, there was only 1 toy car left on the shelf.
    So, 13 - 1 = 12 toy cars were sold during the day.

    ### Answer: 12

Expected answer: 12

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      There were 18 - 16 = <<18-16=2>> robots that stopped functioning during the day.

Expected answer: 2

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Let's say the circus had x tigers originally.

    We know that the circus had 8 tigers left after selling 3 to the zoo. So, we can set up the equation:

    x - 3 = 8

    To solve for x, we can add 3 to both sides of the equation:

    x = 8 + 3

    x = 11

    So, the circus had 11 tigers originally.

Expected answer: 11

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      The tiger population in the nature reserve was originally 15.
    Perilous conditions led to the demise of some of the tigers, leaving only 5 tigers in the reserve.
    Therefore, 15 - 5 = <<15-5=10>>10 tigers were lost.

Expected answer: 10

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Let's use the information given in the problem to set up an equation. We know that the Jackson family had 6 jackets to begin with, and now they have 12 jackets total. We can write an equation to represent this:

    6 + x = 12

    where x is the number of jackets they purchased at the yard sale.

    To solve for x, we can subtract 6 from both sides of the equation:

    x = 12 - 6

    x = 6

    So, the Jackson family purchased 6 jackets at the yard sale.

Expected answer: 6

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Let's say the train detached x cars.

    At the beginning of the journey, the train had 16 cars.

    After detaching x cars, the train had 16 - x cars.

    After continuing on with only 8 cars, the train had 8 - x cars.

    So, we can set up the equation:

    16 - x = 8 - x

    Simplifying the equation:

    16 = 8

    x = 8

    Therefore, 8 cars were detached during the journey.

Expected answer: 8

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      The new shipment contains 4 - 1 = <<4-1=3>>3 bracelets.

Expected answer: 3

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Let's use the information given in the problem to create an equation.

    Let x be the number of students dropped off in the morning.

    We know that the number of students on the bus at the start of the morning was 14.

    We also know that the number of students on the bus after dropping off some students was 7.

    So, we can set up the equation:

    14 - x = 7

    To solve for x, we can add x to both sides of the equation:

    14 - x + x = 7 + x

    Combine like terms:

    21 = 7 + x

    Subtract 7 from both sides:

    14 = x

    So, x is equal to 14.

    Therefore, 14 students were dropped off in the morning.

Expected answer: 7

Correct? No

🔗 Problem

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?

Gemma 2B:

      To find the amount of cheese produced by the end of the day, we need to subtract the amount produced in the morning from the total amount produced.

    9 pounds - 16 pounds = -7 pounds

    So, 7 pounds of cheese were produced by the end of the day.

Expected answer: 7

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Reasoning: Sarah has a total of 6 pillows, and 4 of them are stuffed with feathers. Therefore, the remaining 2 pillows are stuffed with foam.

    ### Answer: 2

Expected answer: 2

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Reasoning: The binoculars maker started with 7 binoculars in the morning and added 4 more in the afternoon, making a total of 11 binoculars.

    So, the number of binoculars she made in the afternoon is:

    11 - 7 = 4

    ### Answer: 4

Expected answer: 4

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Reasoning: The total number of balls in the playground is 8, and the original number of balls is 3. Therefore, the number of balls brought to the playground is 8-3 = <<8-3=5>>5.
    ### Answer: 5

Expected answer: 5

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Let's say the designer started with x blue dresses.

    We know that the designer sold 13 of them, so the number of blue dresses left in stock is x - 13.

    We also know that there are only 2 blue dresses left in stock, so we can set up the equation:

    x - 13 = 2

    To solve for x, we can add 13 to both sides of the equation:

    x = 13 + 2

    x = 15

    So, the designer started with 15 blue dresses.

Expected answer: 15

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      There were 2 helium balloons floating above the child when the party started.

    One of the balloons popped, leaving just 1 balloon.

    Therefore, 1 balloon popped.

Expected answer: 1

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      The pirate originally had 4 gold coins.

Expected answer: 5

Correct? No

🔗 Problem

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?

Gemma 2B:

      Let's use the information given in the problem to create an equation.

    At the beginning of the day, the desk drawer had 6 pens.
    At the end of the day, the desk drawer had 6 + x pens, where x is the number of pens dropped off by office workers.

    We know that the total number of pens in the drawer at the end of the day is 12, so we can set up the equation:

    6 + x = 12

    To solve for x, we can subtract 6 from both sides of the equation:

    x = 12 - 6
    x = 6

    Therefore, 6 pens were dropped off by office workers throughout the day.

Expected answer: 6

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      The shape enthusiast started with 15 different types of shapes.
    She gave away 15-11 = <<15-11=4>>4 types of shapes.
    Therefore, she gave away 4 different types of shapes.

Expected answer: 4

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      The student added 20-3 = <<20-3=17>>17 pencils to the backpack.

Expected answer: 17

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Reasoning: The zookeeper had 6 monkeys in the enclosure initially. Later, 7 - 6 = <<7-6=1>>1 monkey was transferred into the enclosure.
    ### Answer: 1

Expected answer: 1

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Reasoning:

    1. We know that 13 sleeping bags were initially packed.
    2. When we finished packing, only 1 sleeping bag was left behind.
    3. Therefore, we can conclude that 13 - 1 = 12 sleeping bags were packed for the trip.

    ### Answer: 12

Expected answer: 12

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Reasoning: The park started the day with 9 benches and had 10 benches by the afternoon. Therefore, the number of new benches installed is 10 - 9 = 1.

    ### Answer: 1

Expected answer: 1

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      The mermaid lost 9-4=5 scales during the race.

Expected answer: 5

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      The band played 17 - 8 = <<17-8=9>>9 additional songs.

Expected answer: 9

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Let's call the number of wool hats the hat maker started the day with "x".

    We know that he sold 6 hats by noon, so he is left with x - 6 hats.

    We also know that he started the day with x hats, so he had x - 6 hats at noon.

    We can set up the equation:

    x - 6 = x - 6

    Simplifying the equation:

    x = 12

    So, the hat maker started the day with 12 wool hats.

Expected answer: 15

Correct? No

🔗 Problem

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?

Gemma 2B:

      Reasoning: The total inventory counts to 19 soaps after making some more.
    The total inventory at the start of the day is 14 soaps.
    The total inventory at the end of the day is 19 soaps.
    The difference between the total inventory at the start and end of the day is the number of soaps made during the day.
    19 - 14 = <<19-14=5>>5 soaps were made during the day.
    ### Answer: 5

Expected answer: 5

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Reasoning: Sylvia started with 10 bars of soap and ended up with 14 bars of soap. She started with 10 - 10 = <<10-10=0>>0 bars of soap, so she made 14 - 0 = <<14-0=14>>14 new bars of soap.
    ### Answer: 14

Expected answer: 4

Correct? No

🔗 Problem

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?

Gemma 2B:

      Let's call the length of the second rope "x".

    We know that the total length of the two ropes is 19 meters, so we can write the equation:

    13 + x = 19

    We also know that the first rope is 13 meters long, so we can write:

    x = 19 - 13

    x = 6

    Therefore, the second rope is 6 meters long.

Expected answer: 6

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Let's assume that the beach visitors brought 12 beach balls with them.

    At the beginning of the day, there were 2 beach balls scattered around the beach.

    Later in the day, there were 12 beach balls all over the beach.

    So, the total number of beach balls at the beach was 2 + 12 = 14.

    Since the beach visitors brought 12 beach balls with them, the total number of beach balls at the beach was 14 - 12 = 2.

    Therefore, the beach visitors brought 2 beach balls with them.

Expected answer: 10

Correct? No

🔗 Problem

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?

Gemma 2B:

      Reasoning: The group of friends started with 1 piece of firewood and found 10 pieces of firewood altogether. Therefore, they found 10 - 1 = <<10-1=9>>9 extra pieces of firewood that night.
    ### Answer: 9

Expected answer: 9

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Let's assume the customer bought x guitars.

    At the start of the day, you had 18 guitars in stock, and the customer bought x guitars. So, you had 18 - x guitars left in stock.

    By the end of the day, you had 16 guitars left in stock, which means you had x - 16 guitars left in stock.

    We know that x - 16 = 16, so we can set up the equation:

    x - 16 = 16

    Adding 16 to both sides of the equation, we get:

    x = 32

    So, the customer bought 32 guitars.

Expected answer: 2

Correct? No

🔗 Problem

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?

Gemma 2B:

      Let's use the information given in the problem to set up an equation.

    At the beginning of the day, the bike shop had 4 mountain bikes.

    At the end of the day, the bike shop had 14 mountain bikes.

    So, the number of mountain bikes that were added to the shop during the day is equal to the difference between the number of mountain bikes at the end of the day and the number of mountain bikes at the beginning of the day.

    14 - 4 = 10

    Therefore, 10 new mountain bikes were shipped to the shop today.

Expected answer: 10

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Let's say the child had x blue colored pencils at the beginning.

    The classmate gave them y blue colored pencils.

    So, the total number of blue colored pencils is x + y.

    We know that the total number of blue colored pencils is 3, so we can set up the equation:

    x + y = 3

    We also know that the child had 2 blue colored pencils at the beginning, so we can substitute x = 2 into the equation:

    2 + y = 3

    Simplifying the equation, we get:

    y = 1

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

Expected answer: 1

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      The campsite initially had 15 tents. By the end of the day, 19 tents were pitched in total.

    To find out how many more tents were set up during the day, we need to subtract the initial number of tents from the total number of tents:

    19 - 15 = 4

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

Expected answer: 4

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Let's say the pirate looted x treasure chests.

    At the beginning, the pirate had 7 gold coins.

    After looting one chest, he had 7 + 1 = 8 gold coins.

    After looting the second chest, he had 8 + 1 = 9 gold coins.

    After looting the third chest, he had 9 + 1 = 10 gold coins.

    After looting the fourth chest, he had 10 + 1 = 11 gold coins.

    After looting the fifth chest, he had 11 + 1 = 12 gold coins.

    After looting the sixth chest, he had 12 + 1 = 13 gold coins.

    After looting the seventh chest, he had 13 + 1 = 14 gold coins.

    After looting the eighth chest, he had 14 + 1 = 15 gold coins.

    After looting the ninth chest, he had 15 + 1 = 16 gold coins.

    So, the pirate had a total of 16 gold coins after looting all the treasure chests.

    Therefore, the number of gold coins in the other treasure chests he looted is 16 - 7 = 9 gold coins.

Expected answer: 9

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Let's call the amount of money you received as change "x".

    You started with 12 dollars in your wallet, so you had 12 - 16 = -4 dollars left over.

    You received some change, so you now have 16 - (-4) = 20 dollars left in your wallet.

    Therefore, the amount of money you received as change during the trip is 20 - 16 = 4 dollars.

Expected answer: 4

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Let's call the length of the remaining pieces "x".

    We know that the total length of the rope is 17 feet, so we can set up the equation:

    11 + x = 17

    Now, we can solve for "x" by subtracting 11 from both sides of the equation:

    x = 6

    So, the remaining pieces were 6 feet long.

Expected answer: 6

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      The artist had 1 blue colored pencil in her collection.
    After adding a pack of new pencils, she now has 13 colored pencils.

    So, the number of colored pencils in the new pack is 13 - 1 = 12.

Expected answer: 12

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      The musician used 17 - 2 = <<17-2=15>>15 guitar strings.

Expected answer: 15

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      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, then the additional colors visible through the prism are 13 - 7 = <<13-7=6>>6.

Expected answer: 6

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Let's call the height of a fully grown giraffe "x" meters.

    We know that a young giraffe was 1 meter shorter than a full grown one when it was 3 meters tall. So, the height of the young giraffe was 3 - 1 = 2 meters.

    We can set up the equation:

    x - 1 = 2

    To solve for x, we can add 1 to both sides of the equation:

    x = 2 + 1

    x = 3

    So, the typical height of a fully grown giraffe is 3 meters.

Expected answer: 4

Correct? No

🔗 Problem

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?

Gemma 2B:

      Let's use the information given in the problem to create an equation. We know that the total number of pencils in the box was 10 at first, and then the student added some more pencils, so the total number of pencils in the box is now 14. We can write this as an equation:

    10 + x = 14

    where x is the number of pencils that the student added to the box.

    To solve for x, we can subtract 10 from both sides of the equation:

    x = 14 - 10

    x = 4

    So, the student added 4 pencils to the box.

Expected answer: 4

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Let's call the number of feather pillows in the small order "x".

    We know that the total number of feather pillows in the stock is 14.

    We also know that the number of feather pillows in the small order is x.

    So, the total number of feather pillows in the stock after the small order is shipped is:

    14 - x

    We are given that the number of feather pillows in the stock after the small order is shipped is 4.

    Therefore, we can set up the equation:

    14 - x = 4

    To solve for x, we can add x to both sides of the equation:

    14 = x + 4

    Subtracting 4 from both sides gives us:

    10 = x

    So, there were 10 feather pillows in the small order.

Expected answer: 10

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Reasoning: The pizzeria started with 15 pepperoni pizzas and by the evening, they had 16 pepperoni pizzas. Therefore, they baked 16-15 = <<16-15=1>>1 additional pepperoni pizza throughout the day.
    ### Answer: 1

Expected answer: 1

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      The band was not able to perform 4 songs at the concert.

    Reasoning:

    * The band prepared 11 songs to perform at the concert.
    * They only managed to perform 7 songs due to technical problems.
    * Therefore, the band was not able to perform 11 - 7 = 4 songs at the concert.

Expected answer: 4

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      Let's call the original number of snowballs used to build the snowman "x".

    We know that 7 snowballs were removed, so the new number of snowballs remaining is 11.

    We can set up the equation:

    x - 7 = 11

    To solve for x, we can add 7 to both sides of the equation:

    x = 11 + 7

    x = 18

    So, the original number of snowballs used to build the snowman was 18.

Expected answer: 18

Correct? Yes

🔗 Problem

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?

Gemma 2B:

      There were 10 mermaids at the beginning, and after a while, there were 20 mermaids. To find out how many new mermaids joined the kingdom, we need to subtract the original number of mermaids from the new number of mermaids.

    20 - 10 = 10

    So, 10 new mermaids joined the kingdom.

Expected answer: 10

Correct? Yes