Set #4, Item #1

Question: There are 56 birdhouses at school. Today, 4 classes made more birdhourses. Each class made 8 birdhouses. How many total birdhouses are there now?

Answer of 56

//56, the number from the story

Your answer: ” + AnswerForA + ” birdhouses is very close, but not quite correct. Here are two videos showing there are 88, not 56 birdhouses.

Answer of 88

//88

Your answer: ” + AnswerForA + ” birdhouses

Good thinking!! You correctly found that there are 32 new birdhourses and combined it with the first 56 birdhouses. Please check out 2 other ways to solve this question:

This video uses a number line model that is useful in many questions.



This video uses calculations to solve this problem directly.

”

Answer of 32

//distractor A1 is 32

Not quite! Your answer: ” + AnswerForA + ” birdhouses

You may have only found the number of new birdhouses (8 birdhouses made by 4 classes). Watch this video for an explanation about how to get this right next time.

This video uses calculations to solve the problem directly.

Answer of 56

//distractor A2 is 64

Not quite! Your answer: 56 birdhouses

You may have only found the total number of birdhouses after 1 class added 8 birdhouses. However, there are four classes that each add 8 new birdhouses. Watch this video for an explanation about how to get this right next time.

This video uses calculations to solve the problem directly.

Answer of 68

//distractor A3 is 68

Not quite! Your answer: 68 birdhouses

However, there are four classes that each add 8 new birdhouses. Watch this video for an explanation about how to get this right next time.

This video uses calculations to solve the problem directly.

Other Answers

Your answer: _________ birdhouses

There will actually be 88 total birdhouses. There are 32 new birdhourses and combined it with the first 56 birdhouses. Please check out 2 other ways to solve this question:

This video uses a number line model that is useful in many questions.



This video uses calculations to solve this problem directly.

”

Set #4, Item #2

Question: There are 56 birdhouses at school. Today, 4 classes made more birdhourses. Each class made 8 birdhouses. How many total birdhouses are there now?

Answer of 32

//32, the number from the story

Your answer: 32 appears to restate information from the question but does not answer it. Here are two explanations on how to answer the full question next time.

Answer of 6

//6 (or 54 really??)

Your answer: 6 markers

Good thinking!! You correctly found that there are 86 – 32 = 54 markers. Please check out 2 other ways to solve this question:

This video uses subtraction and division to directly calculate the answer.



This video creates a picture that helps consider what these numbers mean.

”

Answer of 5 or 7

//distractor A1 is 5 or 7

Not quite! Your answer: 5 or 7 markers

You may have used an incorrect math fact to divide 54 markers into groups of 9 markers. Watch this video for an details on the correct math fact.



This video creates a picture that helps consider what these numbers mean.

”

Answer of 13 or 14

//distractor A2 is 13 or 14

Not quite! Your answer: 13 or 14 markers

You may have divided 32 markers into groups of 9, but the question asked for the boxes of new numbers. Watch this video for an explanation about how to get this right next time.



This video creates a picture that helps consider what these numbers mean.

”

Answer of 54

//distractor A3 is 54

Not quite! Your answer: 54 birdhouses

However, there are four classes that each add 8 new birdhouses. Watch this video for an explanation about how to get this right next time.

This video uses calculations to solve the problem directly.

Other Answers

Your answer: _____________ appears to restate information from the question but does not answer it. Here are two explanations on how to answer the full question next time.

Set #4, Item #3

Question: Jayson had 274 postcards in his collection. He wanted to give Sam some of his postcards. Jayson gave Sam 8 postcards from each of his collections below: Art, Sports, Schools, Parks, Beaches, Sunsets How many postcards does Jayson have left?

Answer of 274

//274, the number from the story

Your answer: 274 appears to restate information from the question but does not answer it. Here are two explanations on how to answer the full question next time.

Answer of 226

//Key: 226

Your answer: 226 markers

Good thinking!! You correctly found that he gave away 48 postcards, which results in 274 – 48 = 226. Please check out 2 other ways to solve this question:

This video uses multiplication and subtraction to directly calculate the answer.



This video uses subtraction six times.

”

Answer of 34 or 35

//distractor A1 is 34 or 35

Not quite! Your answer: 34 or 35

You may have divided all of Jayson’s postacards among 8 groups. But, the question says Jayson gave Sam 8 postcards from 6 categories. Watch this video for an details on the correct math fact.



This video uses repeated subtraction to solve it.

”

Answer of 258, 266

//distractor A2 is 266, 258

Not quite! Your answer: 258 or 266 markers

You may have subtracted 8 postcards once or twice, but we need to remove six groups of 8 postcards. Watch this video for an explanation about how to get this right next time.



This video uses repeated subtraction to solve it.

”

Answer of 282 and 2192

//distractor A3 is 282, 2192

Not quite! Your answer: ” + AnswerForA + “

You may have used addition or multiplication to solve this question, but we need to subtract 8 postcards six times. Watch this video for an explanation about how to get this right next time.



This video uses repeated subtraction to solve it.

”

Other Answers

Your answer: __________________ is incorrect.

Please take a look at these videos to see how subtraction (and even multiplication) can be used to solve this question.

Set #5, Item #1

Question: Adeline has 8 packs of Fun Gum. Each pack has 7 pieces of gum. Marisol buys Juicy Gum. Each Juicy Gum pack has 9 pieces of gum. Adeline has 11 more pieces of gum than Marisol. How many packs of gum did Marisol buy?

Answer of 35

//35, the number from the story

Your answer: 35 is equal to the value if you add all the numbers. But, it’s important to read closely to understand that addition alone cannot express this problem.

Answer of 5 (correct answer)

//Key: 5

Your answer: 5 packs of gum

Good thinking!! You correctly found that she bought 5 packs of gum. Please check out 2 other ways to solve this question:

This video calculates the answer.



This video includes pictures to help make the work more clear.

”

Answer of 24

//distractor A1 is 24

Your answer: 24 is equal to the value if you add the numbers in the first paragraph. But, it’s important to read closely to understand that addition alone cannot express this problem.

Other Answers

Your answer: __________________ is incorrect.

Please take a look at these videos to see how subtraction (and even multiplication) to solve this question.

Set #5, Question #2

Question: Students in 3 art classes cut 728 inches of ribbon into many 8-inch long pieces. Two classes together cut 656 inches of ribbon. How many 8-inch long pieces of ribbon did the other class cut?

Answer of 9 (correct answer)

//Key: 9

Your answer: 9

Good thinking!! You correctly found that third class cut 9 pieces of ribbon. Please check out 2 other ways to solve this question:

This video calculates the answer.



This video includes pictures to help make the work more clear.

”

Answer of 72

//distractor A1 is 72

Your answer: 72 is equal to the inches of ribbon. But, it’s important to read closely to understand that the ribbon needs to be cut into 9-inch pieces.

This video calculates the answer directly.

This video explains why 72 cannot be the correct answer.

”

Answer of 576

//distractor A2 is 576

Your answer: 576

You may have correctly found the number of inches of riboon, 72, and then mulitplied by 8 rather than divide by 8. Please check out one way to solve this question:

This video calculates the answer.



This video explains why 576 cannot be the correct answer.

”

Other Answers

Your answer: ” + AnswerForA + ” is incorrect.

Please take a look at these videos to see two ways to solve this question so you can do better next time.

Set #5, Item #5

Question: Last summer, Jon’s family found 152 shells at the beach. This summer they were at the beach for 7 days. Each day they found 9 shells. How many fewer shells did they find this year than last year?

Answer of 89 (correct answer)

//Key: 89

Your answer: ” + AnswerForA + ”

Good thinking!! You correctly found that they found 89 fewer shells. Please check out a full explanation about how to solve this question:

This video calculates the answer.

Answer of 80,88,90,98

//distractor A1 is 80, 88, 90, 98

Your answer: 80, 88, 90, or 98 is close but not quite. You may have made a subtraction mistake (if you got 99, you may have forgot to borrow from the ten.

This video calculates the answer directly.

This video explains why answers close to 89 cannot be the correct answer.

”

Answer of 136, 168, 215

//distractor A2 is 136, 168, 215

Your answer: 136, 168, or 215 is close but not quite. You may have added and subtracted but did not consider how each day is repeated addition.

This video calculates the answer directly.

This video explains why answers greater than 100 cannot be the correct answer.

”

Other Answers

Your answer: ____________________ is incorrect.
Please check out a full explanation about how to solve this question:

This video calculates the answer.