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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: 26 + ____ = 59
26 · 59 · Number bonds2. Find the missing number: 35 + ____ = 38
35 · 38 · Number bonds3. Find the missing number: 61 + ____ = 74
61 · 74 · Number bonds4. Find the missing number: 17 + ____ = 24
17 · 24 · Number bonds5. Find the missing number: 15 + ____ = 55
15 · 55 · Number bonds6. Find the missing number: 13 + ____ = 25
13 · 25 · Number bonds7. Find the missing number: 52 + ____ = 87
52 · 87 · Number bonds8. Find the missing number: 32 + ____ = 58
32 · 58 · Number bonds9. Find the missing number: 22 + ____ = 86
22 · 86 · Number bonds10. Find the missing number: 16 + ____ = 30
16 · 30 · Number bonds11. Find the missing number: 40 + ____ = 46
40 · 46 · Number bonds12. Find the missing number: 4 + ____ = 26
4 · 26 · Number bonds
12 questions · Seed 56 · 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: 26 + ____ = 59
33Subtract 26 from 59: 59 − 26 = 33. Check: 26 + 33 = 59.
2. Find the missing number: 35 + ____ = 38
3Subtract 35 from 38: 38 − 35 = 3. Check: 35 + 3 = 38.
3. Find the missing number: 61 + ____ = 74
13Subtract 61 from 74: 74 − 61 = 13. Check: 61 + 13 = 74.
4. Find the missing number: 17 + ____ = 24
7Subtract 17 from 24: 24 − 17 = 7. Check: 17 + 7 = 24.
5. Find the missing number: 15 + ____ = 55
40Subtract 15 from 55: 55 − 15 = 40. Check: 15 + 40 = 55.
6. Find the missing number: 13 + ____ = 25
12Subtract 13 from 25: 25 − 13 = 12. Check: 13 + 12 = 25.
7. Find the missing number: 52 + ____ = 87
35Subtract 52 from 87: 87 − 52 = 35. Check: 52 + 35 = 87.
8. Find the missing number: 32 + ____ = 58
26Subtract 32 from 58: 58 − 32 = 26. Check: 32 + 26 = 58.
9. Find the missing number: 22 + ____ = 86
64Subtract 22 from 86: 86 − 22 = 64. Check: 22 + 64 = 86.
10. Find the missing number: 16 + ____ = 30
14Subtract 16 from 30: 30 − 16 = 14. Check: 16 + 14 = 30.
11. Find the missing number: 40 + ____ = 46
6Subtract 40 from 46: 46 − 40 = 6. Check: 40 + 6 = 46.
12. Find the missing number: 4 + ____ = 26
22Subtract 4 from 26: 26 − 4 = 22. Check: 4 + 22 = 26.
12 questions · Seed 56 · Age guidance, not curriculum certification
Worksheet StudioPractice pack · Ages 7-9
Number bonds
Take your time. Show your thinking.
1. Find the missing number: 26 + ____ = 59
26 · 59 · Number bonds2. Find the missing number: 35 + ____ = 38
35 · 38 · Number bonds3. Find the missing number: 61 + ____ = 74
61 · 74 · Number bonds4. Find the missing number: 17 + ____ = 24
17 · 24 · Number bonds5. Find the missing number: 15 + ____ = 55
15 · 55 · Number bonds6. Find the missing number: 13 + ____ = 25
13 · 25 · Number bonds7. Find the missing number: 52 + ____ = 87
52 · 87 · Number bonds8. Find the missing number: 32 + ____ = 58
32 · 58 · Number bonds9. Find the missing number: 22 + ____ = 86
22 · 86 · Number bonds10. Find the missing number: 16 + ____ = 30
16 · 30 · Number bonds11. Find the missing number: 40 + ____ = 46
40 · 46 · Number bonds12. Find the missing number: 4 + ____ = 26
4 · 26 · Number bonds
12 questions · Seed 56 · Age guidance, not curriculum certification
Worksheet StudioAnswer key · Ages 7-9
Number bonds
Answers and reasoning. Review before teaching.
1. Find the missing number: 26 + ____ = 59
33Subtract 26 from 59: 59 − 26 = 33. Check: 26 + 33 = 59.
2. Find the missing number: 35 + ____ = 38
3Subtract 35 from 38: 38 − 35 = 3. Check: 35 + 3 = 38.
3. Find the missing number: 61 + ____ = 74
13Subtract 61 from 74: 74 − 61 = 13. Check: 61 + 13 = 74.
4. Find the missing number: 17 + ____ = 24
7Subtract 17 from 24: 24 − 17 = 7. Check: 17 + 7 = 24.
5. Find the missing number: 15 + ____ = 55
40Subtract 15 from 55: 55 − 15 = 40. Check: 15 + 40 = 55.
6. Find the missing number: 13 + ____ = 25
12Subtract 13 from 25: 25 − 13 = 12. Check: 13 + 12 = 25.
7. Find the missing number: 52 + ____ = 87
35Subtract 52 from 87: 87 − 52 = 35. Check: 52 + 35 = 87.
8. Find the missing number: 32 + ____ = 58
26Subtract 32 from 58: 58 − 32 = 26. Check: 32 + 26 = 58.
9. Find the missing number: 22 + ____ = 86
64Subtract 22 from 86: 86 − 22 = 64. Check: 22 + 64 = 86.
10. Find the missing number: 16 + ____ = 30
14Subtract 16 from 30: 30 − 16 = 14. Check: 16 + 14 = 30.
11. Find the missing number: 40 + ____ = 46
6Subtract 40 from 46: 46 − 40 = 6. Check: 40 + 6 = 46.
12. Find the missing number: 4 + ____ = 26
22Subtract 4 from 26: 26 − 4 = 22. Check: 4 + 22 = 26.
12 questions · Seed 56 · Age guidance, not curriculum certification