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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: 20 + ____ = 35

    20 · 35 · Number bonds

  2. 2. Find the missing number: 20 + ____ = 24

    20 · 24 · Number bonds

  3. 3. Find the missing number: 41 + ____ = 42

    41 · 42 · Number bonds

  4. 4. Find the missing number: 6 + ____ = 33

    6 · 33 · Number bonds

  5. 5. Find the missing number: 22 + ____ = 24

    22 · 24 · Number bonds

  6. 6. Find the missing number: 36 + ____ = 45

    36 · 45 · Number bonds

  7. 7. Find the missing number: 24 + ____ = 40

    24 · 40 · Number bonds

  8. 8. Find the missing number: 33 + ____ = 64

    33 · 64 · Number bonds

  9. 9. Find the missing number: 28 + ____ = 37

    28 · 37 · Number bonds

  10. 10. Find the missing number: 80 + ____ = 91

    80 · 91 · Number bonds

  11. 11. Find the missing number: 69 + ____ = 96

    69 · 96 · Number bonds

  12. 12. Find the missing number: 91 + ____ = 95

    91 · 95 · Number bonds
12 questions · Seed 42 · 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: 20 + ____ = 35

    15

    Subtract 20 from 35: 35 − 20 = 15. Check: 20 + 15 = 35.

  2. 2. Find the missing number: 20 + ____ = 24

    4

    Subtract 20 from 24: 24 − 20 = 4. Check: 20 + 4 = 24.

  3. 3. Find the missing number: 41 + ____ = 42

    1

    Subtract 41 from 42: 42 − 41 = 1. Check: 41 + 1 = 42.

  4. 4. Find the missing number: 6 + ____ = 33

    27

    Subtract 6 from 33: 33 − 6 = 27. Check: 6 + 27 = 33.

  5. 5. Find the missing number: 22 + ____ = 24

    2

    Subtract 22 from 24: 24 − 22 = 2. Check: 22 + 2 = 24.

  6. 6. Find the missing number: 36 + ____ = 45

    9

    Subtract 36 from 45: 45 − 36 = 9. Check: 36 + 9 = 45.

  7. 7. Find the missing number: 24 + ____ = 40

    16

    Subtract 24 from 40: 40 − 24 = 16. Check: 24 + 16 = 40.

  8. 8. Find the missing number: 33 + ____ = 64

    31

    Subtract 33 from 64: 64 − 33 = 31. Check: 33 + 31 = 64.

  9. 9. Find the missing number: 28 + ____ = 37

    9

    Subtract 28 from 37: 37 − 28 = 9. Check: 28 + 9 = 37.

  10. 10. Find the missing number: 80 + ____ = 91

    11

    Subtract 80 from 91: 91 − 80 = 11. Check: 80 + 11 = 91.

  11. 11. Find the missing number: 69 + ____ = 96

    27

    Subtract 69 from 96: 96 − 69 = 27. Check: 69 + 27 = 96.

  12. 12. Find the missing number: 91 + ____ = 95

    4

    Subtract 91 from 95: 95 − 91 = 4. Check: 91 + 4 = 95.

12 questions · Seed 42 · 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: 20 + ____ = 35

    20 · 35 · Number bonds

  2. 2. Find the missing number: 20 + ____ = 24

    20 · 24 · Number bonds

  3. 3. Find the missing number: 41 + ____ = 42

    41 · 42 · Number bonds

  4. 4. Find the missing number: 6 + ____ = 33

    6 · 33 · Number bonds

  5. 5. Find the missing number: 22 + ____ = 24

    22 · 24 · Number bonds

  6. 6. Find the missing number: 36 + ____ = 45

    36 · 45 · Number bonds

  7. 7. Find the missing number: 24 + ____ = 40

    24 · 40 · Number bonds

  8. 8. Find the missing number: 33 + ____ = 64

    33 · 64 · Number bonds

  9. 9. Find the missing number: 28 + ____ = 37

    28 · 37 · Number bonds

  10. 10. Find the missing number: 80 + ____ = 91

    80 · 91 · Number bonds

  11. 11. Find the missing number: 69 + ____ = 96

    69 · 96 · Number bonds

  12. 12. Find the missing number: 91 + ____ = 95

    91 · 95 · Number bonds
12 questions · Seed 42 · 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: 20 + ____ = 35

    15

    Subtract 20 from 35: 35 − 20 = 15. Check: 20 + 15 = 35.

  2. 2. Find the missing number: 20 + ____ = 24

    4

    Subtract 20 from 24: 24 − 20 = 4. Check: 20 + 4 = 24.

  3. 3. Find the missing number: 41 + ____ = 42

    1

    Subtract 41 from 42: 42 − 41 = 1. Check: 41 + 1 = 42.

  4. 4. Find the missing number: 6 + ____ = 33

    27

    Subtract 6 from 33: 33 − 6 = 27. Check: 6 + 27 = 33.

  5. 5. Find the missing number: 22 + ____ = 24

    2

    Subtract 22 from 24: 24 − 22 = 2. Check: 22 + 2 = 24.

  6. 6. Find the missing number: 36 + ____ = 45

    9

    Subtract 36 from 45: 45 − 36 = 9. Check: 36 + 9 = 45.

  7. 7. Find the missing number: 24 + ____ = 40

    16

    Subtract 24 from 40: 40 − 24 = 16. Check: 24 + 16 = 40.

  8. 8. Find the missing number: 33 + ____ = 64

    31

    Subtract 33 from 64: 64 − 33 = 31. Check: 33 + 31 = 64.

  9. 9. Find the missing number: 28 + ____ = 37

    9

    Subtract 28 from 37: 37 − 28 = 9. Check: 28 + 9 = 37.

  10. 10. Find the missing number: 80 + ____ = 91

    11

    Subtract 80 from 91: 91 − 80 = 11. Check: 80 + 11 = 91.

  11. 11. Find the missing number: 69 + ____ = 96

    27

    Subtract 69 from 96: 96 − 69 = 27. Check: 69 + 27 = 96.

  12. 12. Find the missing number: 91 + ____ = 95

    4

    Subtract 91 from 95: 95 − 91 = 4. Check: 91 + 4 = 95.

12 questions · Seed 42 · Age guidance, not curriculum certification