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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 7-9
Number bonds
Take your time. Show your thinking.
1. Find the missing number: 37 + ____ = 62
37 · 62 · Number bonds2. Find the missing number: 57 + ____ = 96
57 · 96 · Number bonds3. Find the missing number: 21 + ____ = 84
21 · 84 · Number bonds4. Find the missing number: 4 + ____ = 100
4 · 100 · Number bonds5. Find the missing number: 31 + ____ = 69
31 · 69 · Number bonds6. Find the missing number: 38 + ____ = 54
38 · 54 · Number bonds7. Find the missing number: 16 + ____ = 36
16 · 36 · Number bonds8. Find the missing number: 28 + ____ = 41
28 · 41 · Number bonds9. Find the missing number: 63 + ____ = 66
63 · 66 · Number bonds10. Find the missing number: 24 + ____ = 35
24 · 35 · Number bonds11. Find the missing number: 23 + ____ = 30
23 · 30 · Number bonds12. Find the missing number: 9 + ____ = 28
9 · 28 · Number bonds
12 questions · Seed 104729 · Age guidance, not curriculum certification
View the answer key
Worksheet StudioAnswer key · Ages 7-9
Number bonds
Answers and reasoning. Review before teaching.
1. Find the missing number: 37 + ____ = 62
25Subtract 37 from 62: 62 − 37 = 25. Check: 37 + 25 = 62.
2. Find the missing number: 57 + ____ = 96
39Subtract 57 from 96: 96 − 57 = 39. Check: 57 + 39 = 96.
3. Find the missing number: 21 + ____ = 84
63Subtract 21 from 84: 84 − 21 = 63. Check: 21 + 63 = 84.
4. Find the missing number: 4 + ____ = 100
96Subtract 4 from 100: 100 − 4 = 96. Check: 4 + 96 = 100.
5. Find the missing number: 31 + ____ = 69
38Subtract 31 from 69: 69 − 31 = 38. Check: 31 + 38 = 69.
6. Find the missing number: 38 + ____ = 54
16Subtract 38 from 54: 54 − 38 = 16. Check: 38 + 16 = 54.
7. Find the missing number: 16 + ____ = 36
20Subtract 16 from 36: 36 − 16 = 20. Check: 16 + 20 = 36.
8. Find the missing number: 28 + ____ = 41
13Subtract 28 from 41: 41 − 28 = 13. Check: 28 + 13 = 41.
9. Find the missing number: 63 + ____ = 66
3Subtract 63 from 66: 66 − 63 = 3. Check: 63 + 3 = 66.
10. Find the missing number: 24 + ____ = 35
11Subtract 24 from 35: 35 − 24 = 11. Check: 24 + 11 = 35.
11. Find the missing number: 23 + ____ = 30
7Subtract 23 from 30: 30 − 23 = 7. Check: 23 + 7 = 30.
12. Find the missing number: 9 + ____ = 28
19Subtract 9 from 28: 28 − 9 = 19. Check: 9 + 19 = 28.
12 questions · Seed 104729 · Age guidance, not curriculum certification
Worksheet StudioPractice pack · Ages 7-9
Number bonds
Take your time. Show your thinking.
1. Find the missing number: 37 + ____ = 62
37 · 62 · Number bonds2. Find the missing number: 57 + ____ = 96
57 · 96 · Number bonds3. Find the missing number: 21 + ____ = 84
21 · 84 · Number bonds4. Find the missing number: 4 + ____ = 100
4 · 100 · Number bonds5. Find the missing number: 31 + ____ = 69
31 · 69 · Number bonds6. Find the missing number: 38 + ____ = 54
38 · 54 · Number bonds7. Find the missing number: 16 + ____ = 36
16 · 36 · Number bonds8. Find the missing number: 28 + ____ = 41
28 · 41 · Number bonds9. Find the missing number: 63 + ____ = 66
63 · 66 · Number bonds10. Find the missing number: 24 + ____ = 35
24 · 35 · Number bonds11. Find the missing number: 23 + ____ = 30
23 · 30 · Number bonds12. Find the missing number: 9 + ____ = 28
9 · 28 · Number bonds
12 questions · Seed 104729 · Age guidance, not curriculum certification
Worksheet StudioAnswer key · Ages 7-9
Number bonds
Answers and reasoning. Review before teaching.
1. Find the missing number: 37 + ____ = 62
25Subtract 37 from 62: 62 − 37 = 25. Check: 37 + 25 = 62.
2. Find the missing number: 57 + ____ = 96
39Subtract 57 from 96: 96 − 57 = 39. Check: 57 + 39 = 96.
3. Find the missing number: 21 + ____ = 84
63Subtract 21 from 84: 84 − 21 = 63. Check: 21 + 63 = 84.
4. Find the missing number: 4 + ____ = 100
96Subtract 4 from 100: 100 − 4 = 96. Check: 4 + 96 = 100.
5. Find the missing number: 31 + ____ = 69
38Subtract 31 from 69: 69 − 31 = 38. Check: 31 + 38 = 69.
6. Find the missing number: 38 + ____ = 54
16Subtract 38 from 54: 54 − 38 = 16. Check: 38 + 16 = 54.
7. Find the missing number: 16 + ____ = 36
20Subtract 16 from 36: 36 − 16 = 20. Check: 16 + 20 = 36.
8. Find the missing number: 28 + ____ = 41
13Subtract 28 from 41: 41 − 28 = 13. Check: 28 + 13 = 41.
9. Find the missing number: 63 + ____ = 66
3Subtract 63 from 66: 66 − 63 = 3. Check: 63 + 3 = 66.
10. Find the missing number: 24 + ____ = 35
11Subtract 24 from 35: 35 − 24 = 11. Check: 24 + 11 = 35.
11. Find the missing number: 23 + ____ = 30
7Subtract 23 from 30: 30 − 23 = 7. Check: 23 + 7 = 30.
12. Find the missing number: 9 + ____ = 28
19Subtract 9 from 28: 28 − 9 = 19. Check: 9 + 19 = 28.
12 questions · Seed 104729 · Age guidance, not curriculum certification