GRADE 2 • MODULE 4

A STORY OF UNITS

2 Mathematics Curriculum

GRADE

GRADE 2 ? MODULE 4

Answer Key

GRADE 2 ? MODULE 4

Addition and Subtraction Within 200 with Word Problems to 100

Module 4:

Addition and Subtraction Within 200 with Word Problems to 100

? 2014 Common Core, Inc. Some rights reserved.

A STORY OF UNITS

Lesson 1

Problem Set

1. a. 67 b. 76 c. 65 d. 56 e. 46 f. 89 g. 57 h. 73 i. 10 less j. 1 less

2. a. 1 less b. 10 more

Exit Ticket

1. a. 43, 42, 41 b. 28, 18, 8 c. 52, 62, 61

2. a. Answers will vary. b. Answers will vary.

Lesson 1 Answer Key 2?4

3. a. 40, 41, 42 b. 38, 28, 18 c. 49, 48, 47 d. 29, 39, 49

4. a. 40; 66; 32; 79 b. 33, 10; 77, 76 c. 58, 10, 78, 79, 80

5. a. 55, 54, 53, 43, 33 b. 60, 59, 69, 79, 78

6. a. Problem solved using the arrow way; 62 b. Problem solved using the arrow way; 49

Module 4:

Addition and Subtraction Within 200 with Word Problems to 100

1

? 2014 Common Core, Inc. Some rights reserved.

A STORY OF UNITS

Homework

1. a. 38 b. 47 c. 36 d. 27 e. 48 f. 30 g. 35 h. 39 i. 1 less j. 10 more

2. a. 46, 47; +1 b. 34, 14; -10 c. 54, 64; +10 d. 44, 41; -1 e. 64, 54, 24; -10 f. 40, 39; -1

Lesson 1 Answer Key 2?4

3. a. True b. False c. False d. False

4. a. 60; 51; blue b. Problem solved using the arrow way; 48

Module 4:

Addition and Subtraction Within 200 with Word Problems to 100

2

? 2014 Common Core, Inc. Some rights reserved.

A STORY OF UNITS

Lesson 2 Answer Key 2?4

Lesson 2

Problem Set

1. a. 8, 80; 9, 90 b. 54, 74, 64 c. 57, 77, 87 d. 30, 40, 50 e. 30, 40, 60

2. a. 6, 60; 4, 40 b. 38, 26, 38 c. 60, 20, 50 d. 60, 20, 50

Exit Ticket

1. 70 2. 7 3. 2

Homework

1. a. 5, 50; 5, 4, 54 b. 9, 90; 9, 9, 99 c. 68; 48; 98 d. 55; 85; 35 e. 10; 30; 70 f. 40; 50; 80

2. a. 63 > 53 b. 68 = 68 c. 79 > 69 d. 74 > 69 e. 91 < 98 f. 85 < 86

3. 3a. 30 b. 57 c. 2 tens d. 3 tens e. 2 tens 8 ones

4. 448; arrow way will vary.

4. 83 5. 2

3. a. 4, 40; 3, 3, 33 b. 3, 30; 3, 9, 39 c. 35, 45, 35 d. 50, 30, 60 e. 20, 20, 30

4. a. 38 b. 76 c. 68 d. 14

5. 28; arrow way will vary.

Module 4:

Addition and Subtraction Within 200 with Word Problems to 100

1

? 2014 Common Core, Inc. Some rights reserved.

A STORY OF UNITS

Lesson 3

Sprint

Side A 1. 4 2. 40 3. 41 4. 32 5. 2 6. 20 7. 25 8. 34 9. 57 10. 9 11. 79

Side B 1. 3 2. 30 3. 31 4. 22 5. 1 6. 10 7. 15 8. 24 9. 47 10. 9 11. 69

12. 60 13. 63 14. 45 15. 20 16. 25 17. 43 18. 59 19. 37 20. 8 21. 48 22. 49

12. 70 13. 73 14. 55 15. 30 16. 34 17. 52 18. 66 19. 44 20. 8 21. 58 22. 59

Lesson 3 Answer Key 2?4

23. 80 24. 84 25. 57 26. 20 27. 29 28. 56 29. 97 30. 37 31. 64 32. 37 33. 39

23. 70 24. 75 25. 48 26. 10 27. 19 28. 46 29. 87 30. 27 31. 54 32. 47 33. 49

34. 70 35. 72 36. 36 37. 30 38. 36 39. 72 40. 93 41. 57 42. 13 43. 86 44. 88

34. 60 35. 63 36. 27 37. 40 38. 46 39. 82 40. 83 41. 47 42. 23 43. 76 44. 78

Module 4:

Addition and Subtraction Within 200 with Word Problems to 100

1

? 2014 Common Core, Inc. Some rights reserved.

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