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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: 7 + ____ = 10
7 · 10 · Number bonds2. Find the missing number: 6 + ____ = 13
6 · 13 · Number bonds3. Find the missing number: 1 + ____ = 7
1 · 7 · Number bonds4. Find the missing number: 1 + ____ = 12
1 · 12 · Number bonds5. Find the missing number: 2 + ____ = 10
2 · 10 · Number bonds6. Find the missing number: 2 + ____ = 9
2 · 9 · Number bonds7. Find the missing number: 1 + ____ = 5
1 · 5 · Number bonds8. Find the missing number: 9 + ____ = 15
9 · 15 · Number bonds9. Find the missing number: 4 + ____ = 5
4 · 5 · Number bonds10. Find the missing number: 3 + ____ = 5
3 · 5 · Number bonds11. Find the missing number: 8 + ____ = 13
8 · 13 · Number bonds12. Find the missing number: 6 + ____ = 7
6 · 7 · Number bonds
12 questions · Seed 104732 · 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: 7 + ____ = 10
3Subtract 7 from 10: 10 − 7 = 3. Check: 7 + 3 = 10.
2. Find the missing number: 6 + ____ = 13
7Subtract 6 from 13: 13 − 6 = 7. Check: 6 + 7 = 13.
3. Find the missing number: 1 + ____ = 7
6Subtract 1 from 7: 7 − 1 = 6. Check: 1 + 6 = 7.
4. Find the missing number: 1 + ____ = 12
11Subtract 1 from 12: 12 − 1 = 11. Check: 1 + 11 = 12.
5. Find the missing number: 2 + ____ = 10
8Subtract 2 from 10: 10 − 2 = 8. Check: 2 + 8 = 10.
6. Find the missing number: 2 + ____ = 9
7Subtract 2 from 9: 9 − 2 = 7. Check: 2 + 7 = 9.
7. Find the missing number: 1 + ____ = 5
4Subtract 1 from 5: 5 − 1 = 4. Check: 1 + 4 = 5.
8. Find the missing number: 9 + ____ = 15
6Subtract 9 from 15: 15 − 9 = 6. Check: 9 + 6 = 15.
9. Find the missing number: 4 + ____ = 5
1Subtract 4 from 5: 5 − 4 = 1. Check: 4 + 1 = 5.
10. Find the missing number: 3 + ____ = 5
2Subtract 3 from 5: 5 − 3 = 2. Check: 3 + 2 = 5.
11. Find the missing number: 8 + ____ = 13
5Subtract 8 from 13: 13 − 8 = 5. Check: 8 + 5 = 13.
12. Find the missing number: 6 + ____ = 7
1Subtract 6 from 7: 7 − 6 = 1. Check: 6 + 1 = 7.
12 questions · Seed 104732 · Age guidance, not curriculum certification
Worksheet StudioPractice pack · Ages 4-6
Number bonds
Take your time. Show your thinking.
1. Find the missing number: 7 + ____ = 10
7 · 10 · Number bonds2. Find the missing number: 6 + ____ = 13
6 · 13 · Number bonds3. Find the missing number: 1 + ____ = 7
1 · 7 · Number bonds4. Find the missing number: 1 + ____ = 12
1 · 12 · Number bonds5. Find the missing number: 2 + ____ = 10
2 · 10 · Number bonds6. Find the missing number: 2 + ____ = 9
2 · 9 · Number bonds7. Find the missing number: 1 + ____ = 5
1 · 5 · Number bonds8. Find the missing number: 9 + ____ = 15
9 · 15 · Number bonds9. Find the missing number: 4 + ____ = 5
4 · 5 · Number bonds10. Find the missing number: 3 + ____ = 5
3 · 5 · Number bonds11. Find the missing number: 8 + ____ = 13
8 · 13 · Number bonds12. Find the missing number: 6 + ____ = 7
6 · 7 · Number bonds
12 questions · Seed 104732 · Age guidance, not curriculum certification
Worksheet StudioAnswer key · Ages 4-6
Number bonds
Answers and reasoning. Review before teaching.
1. Find the missing number: 7 + ____ = 10
3Subtract 7 from 10: 10 − 7 = 3. Check: 7 + 3 = 10.
2. Find the missing number: 6 + ____ = 13
7Subtract 6 from 13: 13 − 6 = 7. Check: 6 + 7 = 13.
3. Find the missing number: 1 + ____ = 7
6Subtract 1 from 7: 7 − 1 = 6. Check: 1 + 6 = 7.
4. Find the missing number: 1 + ____ = 12
11Subtract 1 from 12: 12 − 1 = 11. Check: 1 + 11 = 12.
5. Find the missing number: 2 + ____ = 10
8Subtract 2 from 10: 10 − 2 = 8. Check: 2 + 8 = 10.
6. Find the missing number: 2 + ____ = 9
7Subtract 2 from 9: 9 − 2 = 7. Check: 2 + 7 = 9.
7. Find the missing number: 1 + ____ = 5
4Subtract 1 from 5: 5 − 1 = 4. Check: 1 + 4 = 5.
8. Find the missing number: 9 + ____ = 15
6Subtract 9 from 15: 15 − 9 = 6. Check: 9 + 6 = 15.
9. Find the missing number: 4 + ____ = 5
1Subtract 4 from 5: 5 − 4 = 1. Check: 4 + 1 = 5.
10. Find the missing number: 3 + ____ = 5
2Subtract 3 from 5: 5 − 3 = 2. Check: 3 + 2 = 5.
11. Find the missing number: 8 + ____ = 13
5Subtract 8 from 13: 13 − 8 = 5. Check: 8 + 5 = 13.
12. Find the missing number: 6 + ____ = 7
1Subtract 6 from 7: 7 − 6 = 1. Check: 6 + 1 = 7.
12 questions · Seed 104732 · Age guidance, not curriculum certification