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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: 63 + ____ = 86

    63 · 86 · Number bonds

  2. 2. Find the missing number: 41 + ____ = 74

    41 · 74 · Number bonds

  3. 3. Find the missing number: 45 + ____ = 76

    45 · 76 · Number bonds

  4. 4. Find the missing number: 70 + ____ = 75

    70 · 75 · Number bonds

  5. 5. Find the missing number: 31 + ____ = 69

    31 · 69 · Number bonds

  6. 6. Find the missing number: 90 + ____ = 99

    90 · 99 · Number bonds

  7. 7. Find the missing number: 18 + ____ = 89

    18 · 89 · Number bonds

  8. 8. Find the missing number: 14 + ____ = 69

    14 · 69 · Number bonds

  9. 9. Find the missing number: 18 + ____ = 20

    18 · 20 · Number bonds

  10. 10. Find the missing number: 3 + ____ = 20

    3 · 20 · Number bonds

  11. 11. Find the missing number: 13 + ____ = 26

    13 · 26 · Number bonds

  12. 12. Find the missing number: 31 + ____ = 52

    31 · 52 · Number bonds
12 questions · Seed 48 · 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: 63 + ____ = 86

    23

    Subtract 63 from 86: 86 − 63 = 23. Check: 63 + 23 = 86.

  2. 2. Find the missing number: 41 + ____ = 74

    33

    Subtract 41 from 74: 74 − 41 = 33. Check: 41 + 33 = 74.

  3. 3. Find the missing number: 45 + ____ = 76

    31

    Subtract 45 from 76: 76 − 45 = 31. Check: 45 + 31 = 76.

  4. 4. Find the missing number: 70 + ____ = 75

    5

    Subtract 70 from 75: 75 − 70 = 5. Check: 70 + 5 = 75.

  5. 5. Find the missing number: 31 + ____ = 69

    38

    Subtract 31 from 69: 69 − 31 = 38. Check: 31 + 38 = 69.

  6. 6. Find the missing number: 90 + ____ = 99

    9

    Subtract 90 from 99: 99 − 90 = 9. Check: 90 + 9 = 99.

  7. 7. Find the missing number: 18 + ____ = 89

    71

    Subtract 18 from 89: 89 − 18 = 71. Check: 18 + 71 = 89.

  8. 8. Find the missing number: 14 + ____ = 69

    55

    Subtract 14 from 69: 69 − 14 = 55. Check: 14 + 55 = 69.

  9. 9. Find the missing number: 18 + ____ = 20

    2

    Subtract 18 from 20: 20 − 18 = 2. Check: 18 + 2 = 20.

  10. 10. Find the missing number: 3 + ____ = 20

    17

    Subtract 3 from 20: 20 − 3 = 17. Check: 3 + 17 = 20.

  11. 11. Find the missing number: 13 + ____ = 26

    13

    Subtract 13 from 26: 26 − 13 = 13. Check: 13 + 13 = 26.

  12. 12. Find the missing number: 31 + ____ = 52

    21

    Subtract 31 from 52: 52 − 31 = 21. Check: 31 + 21 = 52.

12 questions · Seed 48 · 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: 63 + ____ = 86

    63 · 86 · Number bonds

  2. 2. Find the missing number: 41 + ____ = 74

    41 · 74 · Number bonds

  3. 3. Find the missing number: 45 + ____ = 76

    45 · 76 · Number bonds

  4. 4. Find the missing number: 70 + ____ = 75

    70 · 75 · Number bonds

  5. 5. Find the missing number: 31 + ____ = 69

    31 · 69 · Number bonds

  6. 6. Find the missing number: 90 + ____ = 99

    90 · 99 · Number bonds

  7. 7. Find the missing number: 18 + ____ = 89

    18 · 89 · Number bonds

  8. 8. Find the missing number: 14 + ____ = 69

    14 · 69 · Number bonds

  9. 9. Find the missing number: 18 + ____ = 20

    18 · 20 · Number bonds

  10. 10. Find the missing number: 3 + ____ = 20

    3 · 20 · Number bonds

  11. 11. Find the missing number: 13 + ____ = 26

    13 · 26 · Number bonds

  12. 12. Find the missing number: 31 + ____ = 52

    31 · 52 · Number bonds
12 questions · Seed 48 · 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: 63 + ____ = 86

    23

    Subtract 63 from 86: 86 − 63 = 23. Check: 63 + 23 = 86.

  2. 2. Find the missing number: 41 + ____ = 74

    33

    Subtract 41 from 74: 74 − 41 = 33. Check: 41 + 33 = 74.

  3. 3. Find the missing number: 45 + ____ = 76

    31

    Subtract 45 from 76: 76 − 45 = 31. Check: 45 + 31 = 76.

  4. 4. Find the missing number: 70 + ____ = 75

    5

    Subtract 70 from 75: 75 − 70 = 5. Check: 70 + 5 = 75.

  5. 5. Find the missing number: 31 + ____ = 69

    38

    Subtract 31 from 69: 69 − 31 = 38. Check: 31 + 38 = 69.

  6. 6. Find the missing number: 90 + ____ = 99

    9

    Subtract 90 from 99: 99 − 90 = 9. Check: 90 + 9 = 99.

  7. 7. Find the missing number: 18 + ____ = 89

    71

    Subtract 18 from 89: 89 − 18 = 71. Check: 18 + 71 = 89.

  8. 8. Find the missing number: 14 + ____ = 69

    55

    Subtract 14 from 69: 69 − 14 = 55. Check: 14 + 55 = 69.

  9. 9. Find the missing number: 18 + ____ = 20

    2

    Subtract 18 from 20: 20 − 18 = 2. Check: 18 + 2 = 20.

  10. 10. Find the missing number: 3 + ____ = 20

    17

    Subtract 3 from 20: 20 − 3 = 17. Check: 3 + 17 = 20.

  11. 11. Find the missing number: 13 + ____ = 26

    13

    Subtract 13 from 26: 26 − 13 = 13. Check: 13 + 13 = 26.

  12. 12. Find the missing number: 31 + ____ = 52

    21

    Subtract 31 from 52: 52 − 31 = 21. Check: 31 + 21 = 52.

12 questions · Seed 48 · Age guidance, not curriculum certification