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MathsAges 7-9

Number bonds

Find the missing addend that completes a target whole number. Review suitability for your learners before teaching.

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Age band:Ages 4-6Ages 7-9

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Worksheet StudioPractice pack · Ages 7-9

Number bonds

Take your time. Show your thinking.

  1. 1. Find the missing number: 65 + ____ = 72

    65 · 72 · Number bonds

  2. 2. Find the missing number: 35 + ____ = 69

    35 · 69 · Number bonds

  3. 3. Find the missing number: 42 + ____ = 52

    42 · 52 · Number bonds

  4. 4. Find the missing number: 3 + ____ = 21

    3 · 21 · Number bonds

  5. 5. Find the missing number: 51 + ____ = 59

    51 · 59 · Number bonds

  6. 6. Find the missing number: 44 + ____ = 48

    44 · 48 · Number bonds

  7. 7. Find the missing number: 54 + ____ = 56

    54 · 56 · Number bonds

  8. 8. Find the missing number: 20 + ____ = 62

    20 · 62 · Number bonds

  9. 9. Find the missing number: 13 + ____ = 83

    13 · 83 · Number bonds

  10. 10. Find the missing number: 60 + ____ = 66

    60 · 66 · Number bonds

  11. 11. Find the missing number: 84 + ____ = 85

    84 · 85 · Number bonds

  12. 12. Find the missing number: 23 + ____ = 28

    23 · 28 · Number bonds
12 questions · Seed 43 · Age guidance, not curriculum certification
View the answer key
Worksheet StudioAnswer key · Ages 7-9

Number bonds

Answers and reasoning. Review before teaching.

  1. 1. Find the missing number: 65 + ____ = 72

    7

    Subtract 65 from 72: 72 − 65 = 7. Check: 65 + 7 = 72.

  2. 2. Find the missing number: 35 + ____ = 69

    34

    Subtract 35 from 69: 69 − 35 = 34. Check: 35 + 34 = 69.

  3. 3. Find the missing number: 42 + ____ = 52

    10

    Subtract 42 from 52: 52 − 42 = 10. Check: 42 + 10 = 52.

  4. 4. Find the missing number: 3 + ____ = 21

    18

    Subtract 3 from 21: 21 − 3 = 18. Check: 3 + 18 = 21.

  5. 5. Find the missing number: 51 + ____ = 59

    8

    Subtract 51 from 59: 59 − 51 = 8. Check: 51 + 8 = 59.

  6. 6. Find the missing number: 44 + ____ = 48

    4

    Subtract 44 from 48: 48 − 44 = 4. Check: 44 + 4 = 48.

  7. 7. Find the missing number: 54 + ____ = 56

    2

    Subtract 54 from 56: 56 − 54 = 2. Check: 54 + 2 = 56.

  8. 8. Find the missing number: 20 + ____ = 62

    42

    Subtract 20 from 62: 62 − 20 = 42. Check: 20 + 42 = 62.

  9. 9. Find the missing number: 13 + ____ = 83

    70

    Subtract 13 from 83: 83 − 13 = 70. Check: 13 + 70 = 83.

  10. 10. Find the missing number: 60 + ____ = 66

    6

    Subtract 60 from 66: 66 − 60 = 6. Check: 60 + 6 = 66.

  11. 11. Find the missing number: 84 + ____ = 85

    1

    Subtract 84 from 85: 85 − 84 = 1. Check: 84 + 1 = 85.

  12. 12. Find the missing number: 23 + ____ = 28

    5

    Subtract 23 from 28: 28 − 23 = 5. Check: 23 + 5 = 28.

12 questions · Seed 43 · Age guidance, not curriculum certification
Worksheet StudioPractice pack · Ages 7-9

Number bonds

Take your time. Show your thinking.

  1. 1. Find the missing number: 65 + ____ = 72

    65 · 72 · Number bonds

  2. 2. Find the missing number: 35 + ____ = 69

    35 · 69 · Number bonds

  3. 3. Find the missing number: 42 + ____ = 52

    42 · 52 · Number bonds

  4. 4. Find the missing number: 3 + ____ = 21

    3 · 21 · Number bonds

  5. 5. Find the missing number: 51 + ____ = 59

    51 · 59 · Number bonds

  6. 6. Find the missing number: 44 + ____ = 48

    44 · 48 · Number bonds

  7. 7. Find the missing number: 54 + ____ = 56

    54 · 56 · Number bonds

  8. 8. Find the missing number: 20 + ____ = 62

    20 · 62 · Number bonds

  9. 9. Find the missing number: 13 + ____ = 83

    13 · 83 · Number bonds

  10. 10. Find the missing number: 60 + ____ = 66

    60 · 66 · Number bonds

  11. 11. Find the missing number: 84 + ____ = 85

    84 · 85 · Number bonds

  12. 12. Find the missing number: 23 + ____ = 28

    23 · 28 · Number bonds
12 questions · Seed 43 · Age guidance, not curriculum certification
Worksheet StudioAnswer key · Ages 7-9

Number bonds

Answers and reasoning. Review before teaching.

  1. 1. Find the missing number: 65 + ____ = 72

    7

    Subtract 65 from 72: 72 − 65 = 7. Check: 65 + 7 = 72.

  2. 2. Find the missing number: 35 + ____ = 69

    34

    Subtract 35 from 69: 69 − 35 = 34. Check: 35 + 34 = 69.

  3. 3. Find the missing number: 42 + ____ = 52

    10

    Subtract 42 from 52: 52 − 42 = 10. Check: 42 + 10 = 52.

  4. 4. Find the missing number: 3 + ____ = 21

    18

    Subtract 3 from 21: 21 − 3 = 18. Check: 3 + 18 = 21.

  5. 5. Find the missing number: 51 + ____ = 59

    8

    Subtract 51 from 59: 59 − 51 = 8. Check: 51 + 8 = 59.

  6. 6. Find the missing number: 44 + ____ = 48

    4

    Subtract 44 from 48: 48 − 44 = 4. Check: 44 + 4 = 48.

  7. 7. Find the missing number: 54 + ____ = 56

    2

    Subtract 54 from 56: 56 − 54 = 2. Check: 54 + 2 = 56.

  8. 8. Find the missing number: 20 + ____ = 62

    42

    Subtract 20 from 62: 62 − 20 = 42. Check: 20 + 42 = 62.

  9. 9. Find the missing number: 13 + ____ = 83

    70

    Subtract 13 from 83: 83 − 13 = 70. Check: 13 + 70 = 83.

  10. 10. Find the missing number: 60 + ____ = 66

    6

    Subtract 60 from 66: 66 − 60 = 6. Check: 60 + 6 = 66.

  11. 11. Find the missing number: 84 + ____ = 85

    1

    Subtract 84 from 85: 85 − 84 = 1. Check: 84 + 1 = 85.

  12. 12. Find the missing number: 23 + ____ = 28

    5

    Subtract 23 from 28: 28 − 23 = 5. Check: 23 + 5 = 28.

12 questions · Seed 43 · Age guidance, not curriculum certification