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Number bonds
Find the missing addend that completes a target whole number. Review suitability for your learners before teaching.
Worksheet StudioPractice pack · Ages 4-6
Number bonds
Take your time. Show your thinking.
1. Find the missing number: 6 + ____ = 10
6 · 10 · Number bonds2. Find the missing number: 9 + ____ = 15
9 · 15 · Number bonds3. Find the missing number: 4 + ____ = 13
4 · 13 · Number bonds4. Find the missing number: 1 + ____ = 15
1 · 15 · Number bonds5. Find the missing number: 5 + ____ = 11
5 · 11 · Number bonds6. Find the missing number: 6 + ____ = 9
6 · 9 · Number bonds7. Find the missing number: 3 + ____ = 7
3 · 7 · Number bonds8. Find the missing number: 5 + ____ = 7
5 · 7 · Number bonds9. Find the missing number: 10 + ____ = 11
10 · 11 · Number bonds10. Find the missing number: 4 + ____ = 6
4 · 6 · Number bonds11. Find the missing number: 2 + ____ = 6
2 · 6 · Number bonds12. Find the missing number: 1 + ____ = 14
1 · 14 · Number bonds
12 questions · Seed 104729 · Age guidance, not curriculum certification
View the answer key
Worksheet StudioAnswer key · Ages 4-6
Number bonds
Answers and reasoning. Review before teaching.
1. Find the missing number: 6 + ____ = 10
4Subtract 6 from 10: 10 − 6 = 4. Check: 6 + 4 = 10.
2. Find the missing number: 9 + ____ = 15
6Subtract 9 from 15: 15 − 9 = 6. Check: 9 + 6 = 15.
3. Find the missing number: 4 + ____ = 13
9Subtract 4 from 13: 13 − 4 = 9. Check: 4 + 9 = 13.
4. Find the missing number: 1 + ____ = 15
14Subtract 1 from 15: 15 − 1 = 14. Check: 1 + 14 = 15.
5. Find the missing number: 5 + ____ = 11
6Subtract 5 from 11: 11 − 5 = 6. Check: 5 + 6 = 11.
6. Find the missing number: 6 + ____ = 9
3Subtract 6 from 9: 9 − 6 = 3. Check: 6 + 3 = 9.
7. Find the missing number: 3 + ____ = 7
4Subtract 3 from 7: 7 − 3 = 4. Check: 3 + 4 = 7.
8. Find the missing number: 5 + ____ = 7
2Subtract 5 from 7: 7 − 5 = 2. Check: 5 + 2 = 7.
9. Find the missing number: 10 + ____ = 11
1Subtract 10 from 11: 11 − 10 = 1. Check: 10 + 1 = 11.
10. Find the missing number: 4 + ____ = 6
2Subtract 4 from 6: 6 − 4 = 2. Check: 4 + 2 = 6.
11. Find the missing number: 2 + ____ = 6
4Subtract 2 from 6: 6 − 2 = 4. Check: 2 + 4 = 6.
12. Find the missing number: 1 + ____ = 14
13Subtract 1 from 14: 14 − 1 = 13. Check: 1 + 13 = 14.
12 questions · Seed 104729 · Age guidance, not curriculum certification
Worksheet StudioPractice pack · Ages 4-6
Number bonds
Take your time. Show your thinking.
1. Find the missing number: 6 + ____ = 10
6 · 10 · Number bonds2. Find the missing number: 9 + ____ = 15
9 · 15 · Number bonds3. Find the missing number: 4 + ____ = 13
4 · 13 · Number bonds4. Find the missing number: 1 + ____ = 15
1 · 15 · Number bonds5. Find the missing number: 5 + ____ = 11
5 · 11 · Number bonds6. Find the missing number: 6 + ____ = 9
6 · 9 · Number bonds7. Find the missing number: 3 + ____ = 7
3 · 7 · Number bonds8. Find the missing number: 5 + ____ = 7
5 · 7 · Number bonds9. Find the missing number: 10 + ____ = 11
10 · 11 · Number bonds10. Find the missing number: 4 + ____ = 6
4 · 6 · Number bonds11. Find the missing number: 2 + ____ = 6
2 · 6 · Number bonds12. Find the missing number: 1 + ____ = 14
1 · 14 · Number bonds
12 questions · Seed 104729 · Age guidance, not curriculum certification
Worksheet StudioAnswer key · Ages 4-6
Number bonds
Answers and reasoning. Review before teaching.
1. Find the missing number: 6 + ____ = 10
4Subtract 6 from 10: 10 − 6 = 4. Check: 6 + 4 = 10.
2. Find the missing number: 9 + ____ = 15
6Subtract 9 from 15: 15 − 9 = 6. Check: 9 + 6 = 15.
3. Find the missing number: 4 + ____ = 13
9Subtract 4 from 13: 13 − 4 = 9. Check: 4 + 9 = 13.
4. Find the missing number: 1 + ____ = 15
14Subtract 1 from 15: 15 − 1 = 14. Check: 1 + 14 = 15.
5. Find the missing number: 5 + ____ = 11
6Subtract 5 from 11: 11 − 5 = 6. Check: 5 + 6 = 11.
6. Find the missing number: 6 + ____ = 9
3Subtract 6 from 9: 9 − 6 = 3. Check: 6 + 3 = 9.
7. Find the missing number: 3 + ____ = 7
4Subtract 3 from 7: 7 − 3 = 4. Check: 3 + 4 = 7.
8. Find the missing number: 5 + ____ = 7
2Subtract 5 from 7: 7 − 5 = 2. Check: 5 + 2 = 7.
9. Find the missing number: 10 + ____ = 11
1Subtract 10 from 11: 11 − 10 = 1. Check: 10 + 1 = 11.
10. Find the missing number: 4 + ____ = 6
2Subtract 4 from 6: 6 − 4 = 2. Check: 4 + 2 = 6.
11. Find the missing number: 2 + ____ = 6
4Subtract 2 from 6: 6 − 2 = 4. Check: 2 + 4 = 6.
12. Find the missing number: 1 + ____ = 14
13Subtract 1 from 14: 14 − 1 = 13. Check: 1 + 13 = 14.
12 questions · Seed 104729 · Age guidance, not curriculum certification