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MathsAges 4-6

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 4-6

Number bonds

Take your time. Show your thinking.

  1. 1. Find the missing number: 12 + ____ = 13

    12 · 13 · Number bonds

  2. 2. Find the missing number: 2 + ____ = 10

    2 · 10 · Number bonds

  3. 3. Find the missing number: 4 + ____ = 7

    4 · 7 · Number bonds

  4. 4. Find the missing number: 7 + ____ = 11

    7 · 11 · Number bonds

  5. 5. Find the missing number: 6 + ____ = 13

    6 · 13 · Number bonds

  6. 6. Find the missing number: 1 + ____ = 13

    1 · 13 · Number bonds

  7. 7. Find the missing number: 3 + ____ = 11

    3 · 11 · Number bonds

  8. 8. Find the missing number: 9 + ____ = 10

    9 · 10 · Number bonds

  9. 9. Find the missing number: 5 + ____ = 6

    5 · 6 · Number bonds

  10. 10. Find the missing number: 5 + ____ = 9

    5 · 9 · Number bonds

  11. 11. Find the missing number: 2 + ____ = 5

    2 · 5 · Number bonds

  12. 12. Find the missing number: 9 + ____ = 12

    9 · 12 · Number bonds
12 questions · Seed 45 · Age guidance, not curriculum certification
View the answer key
Worksheet StudioAnswer key · Ages 4-6

Number bonds

Answers and reasoning. Review before teaching.

  1. 1. Find the missing number: 12 + ____ = 13

    1

    Subtract 12 from 13: 13 − 12 = 1. Check: 12 + 1 = 13.

  2. 2. Find the missing number: 2 + ____ = 10

    8

    Subtract 2 from 10: 10 − 2 = 8. Check: 2 + 8 = 10.

  3. 3. Find the missing number: 4 + ____ = 7

    3

    Subtract 4 from 7: 7 − 4 = 3. Check: 4 + 3 = 7.

  4. 4. Find the missing number: 7 + ____ = 11

    4

    Subtract 7 from 11: 11 − 7 = 4. Check: 7 + 4 = 11.

  5. 5. Find the missing number: 6 + ____ = 13

    7

    Subtract 6 from 13: 13 − 6 = 7. Check: 6 + 7 = 13.

  6. 6. Find the missing number: 1 + ____ = 13

    12

    Subtract 1 from 13: 13 − 1 = 12. Check: 1 + 12 = 13.

  7. 7. Find the missing number: 3 + ____ = 11

    8

    Subtract 3 from 11: 11 − 3 = 8. Check: 3 + 8 = 11.

  8. 8. Find the missing number: 9 + ____ = 10

    1

    Subtract 9 from 10: 10 − 9 = 1. Check: 9 + 1 = 10.

  9. 9. Find the missing number: 5 + ____ = 6

    1

    Subtract 5 from 6: 6 − 5 = 1. Check: 5 + 1 = 6.

  10. 10. Find the missing number: 5 + ____ = 9

    4

    Subtract 5 from 9: 9 − 5 = 4. Check: 5 + 4 = 9.

  11. 11. Find the missing number: 2 + ____ = 5

    3

    Subtract 2 from 5: 5 − 2 = 3. Check: 2 + 3 = 5.

  12. 12. Find the missing number: 9 + ____ = 12

    3

    Subtract 9 from 12: 12 − 9 = 3. Check: 9 + 3 = 12.

12 questions · Seed 45 · Age guidance, not curriculum certification
Worksheet StudioPractice pack · Ages 4-6

Number bonds

Take your time. Show your thinking.

  1. 1. Find the missing number: 12 + ____ = 13

    12 · 13 · Number bonds

  2. 2. Find the missing number: 2 + ____ = 10

    2 · 10 · Number bonds

  3. 3. Find the missing number: 4 + ____ = 7

    4 · 7 · Number bonds

  4. 4. Find the missing number: 7 + ____ = 11

    7 · 11 · Number bonds

  5. 5. Find the missing number: 6 + ____ = 13

    6 · 13 · Number bonds

  6. 6. Find the missing number: 1 + ____ = 13

    1 · 13 · Number bonds

  7. 7. Find the missing number: 3 + ____ = 11

    3 · 11 · Number bonds

  8. 8. Find the missing number: 9 + ____ = 10

    9 · 10 · Number bonds

  9. 9. Find the missing number: 5 + ____ = 6

    5 · 6 · Number bonds

  10. 10. Find the missing number: 5 + ____ = 9

    5 · 9 · Number bonds

  11. 11. Find the missing number: 2 + ____ = 5

    2 · 5 · Number bonds

  12. 12. Find the missing number: 9 + ____ = 12

    9 · 12 · Number bonds
12 questions · Seed 45 · Age guidance, not curriculum certification
Worksheet StudioAnswer key · Ages 4-6

Number bonds

Answers and reasoning. Review before teaching.

  1. 1. Find the missing number: 12 + ____ = 13

    1

    Subtract 12 from 13: 13 − 12 = 1. Check: 12 + 1 = 13.

  2. 2. Find the missing number: 2 + ____ = 10

    8

    Subtract 2 from 10: 10 − 2 = 8. Check: 2 + 8 = 10.

  3. 3. Find the missing number: 4 + ____ = 7

    3

    Subtract 4 from 7: 7 − 4 = 3. Check: 4 + 3 = 7.

  4. 4. Find the missing number: 7 + ____ = 11

    4

    Subtract 7 from 11: 11 − 7 = 4. Check: 7 + 4 = 11.

  5. 5. Find the missing number: 6 + ____ = 13

    7

    Subtract 6 from 13: 13 − 6 = 7. Check: 6 + 7 = 13.

  6. 6. Find the missing number: 1 + ____ = 13

    12

    Subtract 1 from 13: 13 − 1 = 12. Check: 1 + 12 = 13.

  7. 7. Find the missing number: 3 + ____ = 11

    8

    Subtract 3 from 11: 11 − 3 = 8. Check: 3 + 8 = 11.

  8. 8. Find the missing number: 9 + ____ = 10

    1

    Subtract 9 from 10: 10 − 9 = 1. Check: 9 + 1 = 10.

  9. 9. Find the missing number: 5 + ____ = 6

    1

    Subtract 5 from 6: 6 − 5 = 1. Check: 5 + 1 = 6.

  10. 10. Find the missing number: 5 + ____ = 9

    4

    Subtract 5 from 9: 9 − 5 = 4. Check: 5 + 4 = 9.

  11. 11. Find the missing number: 2 + ____ = 5

    3

    Subtract 2 from 5: 5 − 2 = 3. Check: 2 + 3 = 5.

  12. 12. Find the missing number: 9 + ____ = 12

    3

    Subtract 9 from 12: 12 − 9 = 3. Check: 9 + 3 = 12.

12 questions · Seed 45 · Age guidance, not curriculum certification