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Missing number in subtraction
Find the unknown number subtracted from a starting total to leave a given remainder. Review suitability for your learners before teaching.
Worksheet StudioPractice pack · Ages 7-9
Missing number in subtraction
Take your time. Show your thinking.
1. Find the missing number: 11 − ____ = 8
2. Find the missing number: 43 − ____ = 35
3. Find the missing number: 51 − ____ = 33
4. Find the missing number: 71 − ____ = 38
5. Find the missing number: 39 − ____ = 13
6. Find the missing number: 61 − ____ = 29
7. Find the missing number: 33 − ____ = 15
8. Find the missing number: 49 − ____ = 15
9. Find the missing number: 29 − ____ = 13
10. Find the missing number: 28 − ____ = 6
11. Find the missing number: 63 − ____ = 31
12. Find the missing number: 22 − ____ = 14
12 questions · Seed 42 · Age guidance, not curriculum certification
View the answer key
Worksheet StudioAnswer key · Ages 7-9
Missing number in subtraction
Answers and reasoning. Review before teaching.
1. Find the missing number: 11 − ____ = 8
3Subtract 8 from 11: 11 − 8 = 3.
2. Find the missing number: 43 − ____ = 35
8Subtract 35 from 43: 43 − 35 = 8.
3. Find the missing number: 51 − ____ = 33
18Subtract 33 from 51: 51 − 33 = 18.
4. Find the missing number: 71 − ____ = 38
33Subtract 38 from 71: 71 − 38 = 33.
5. Find the missing number: 39 − ____ = 13
26Subtract 13 from 39: 39 − 13 = 26.
6. Find the missing number: 61 − ____ = 29
32Subtract 29 from 61: 61 − 29 = 32.
7. Find the missing number: 33 − ____ = 15
18Subtract 15 from 33: 33 − 15 = 18.
8. Find the missing number: 49 − ____ = 15
34Subtract 15 from 49: 49 − 15 = 34.
9. Find the missing number: 29 − ____ = 13
16Subtract 13 from 29: 29 − 13 = 16.
10. Find the missing number: 28 − ____ = 6
22Subtract 6 from 28: 28 − 6 = 22.
11. Find the missing number: 63 − ____ = 31
32Subtract 31 from 63: 63 − 31 = 32.
12. Find the missing number: 22 − ____ = 14
8Subtract 14 from 22: 22 − 14 = 8.
12 questions · Seed 42 · Age guidance, not curriculum certification
Worksheet StudioPractice pack · Ages 7-9
Missing number in subtraction
Take your time. Show your thinking.
1. Find the missing number: 11 − ____ = 8
2. Find the missing number: 43 − ____ = 35
3. Find the missing number: 51 − ____ = 33
4. Find the missing number: 71 − ____ = 38
5. Find the missing number: 39 − ____ = 13
6. Find the missing number: 61 − ____ = 29
7. Find the missing number: 33 − ____ = 15
8. Find the missing number: 49 − ____ = 15
9. Find the missing number: 29 − ____ = 13
10. Find the missing number: 28 − ____ = 6
11. Find the missing number: 63 − ____ = 31
12. Find the missing number: 22 − ____ = 14
12 questions · Seed 42 · Age guidance, not curriculum certification
Worksheet StudioAnswer key · Ages 7-9
Missing number in subtraction
Answers and reasoning. Review before teaching.
1. Find the missing number: 11 − ____ = 8
3Subtract 8 from 11: 11 − 8 = 3.
2. Find the missing number: 43 − ____ = 35
8Subtract 35 from 43: 43 − 35 = 8.
3. Find the missing number: 51 − ____ = 33
18Subtract 33 from 51: 51 − 33 = 18.
4. Find the missing number: 71 − ____ = 38
33Subtract 38 from 71: 71 − 38 = 33.
5. Find the missing number: 39 − ____ = 13
26Subtract 13 from 39: 39 − 13 = 26.
6. Find the missing number: 61 − ____ = 29
32Subtract 29 from 61: 61 − 29 = 32.
7. Find the missing number: 33 − ____ = 15
18Subtract 15 from 33: 33 − 15 = 18.
8. Find the missing number: 49 − ____ = 15
34Subtract 15 from 49: 49 − 15 = 34.
9. Find the missing number: 29 − ____ = 13
16Subtract 13 from 29: 29 − 13 = 16.
10. Find the missing number: 28 − ____ = 6
22Subtract 6 from 28: 28 − 6 = 22.
11. Find the missing number: 63 − ____ = 31
32Subtract 31 from 63: 63 − 31 = 32.
12. Find the missing number: 22 − ____ = 14
8Subtract 14 from 22: 22 − 14 = 8.
12 questions · Seed 42 · Age guidance, not curriculum certification