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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 10-12
Missing number in subtraction
Take your time. Show your thinking.
1. Find the missing number: 38 − ____ = 10
2. Find the missing number: 30 − ____ = 13
3. Find the missing number: 57 − ____ = 29
4. Find the missing number: 31 − ____ = 23
5. Find the missing number: 49 − ____ = 20
6. Find the missing number: 66 − ____ = 33
7. Find the missing number: 28 − ____ = 17
8. Find the missing number: 51 − ____ = 29
9. Find the missing number: 14 − ____ = 8
10. Find the missing number: 32 − ____ = 24
11. Find the missing number: 34 − ____ = 29
12. Find the missing number: 39 − ____ = 34
12 questions · Seed 104776 · Age guidance, not curriculum certification
View the answer key
Worksheet StudioAnswer key · Ages 10-12
Missing number in subtraction
Answers and reasoning. Review before teaching.
1. Find the missing number: 38 − ____ = 10
28Subtract 10 from 38: 38 − 10 = 28.
2. Find the missing number: 30 − ____ = 13
17Subtract 13 from 30: 30 − 13 = 17.
3. Find the missing number: 57 − ____ = 29
28Subtract 29 from 57: 57 − 29 = 28.
4. Find the missing number: 31 − ____ = 23
8Subtract 23 from 31: 31 − 23 = 8.
5. Find the missing number: 49 − ____ = 20
29Subtract 20 from 49: 49 − 20 = 29.
6. Find the missing number: 66 − ____ = 33
33Subtract 33 from 66: 66 − 33 = 33.
7. Find the missing number: 28 − ____ = 17
11Subtract 17 from 28: 28 − 17 = 11.
8. Find the missing number: 51 − ____ = 29
22Subtract 29 from 51: 51 − 29 = 22.
9. Find the missing number: 14 − ____ = 8
6Subtract 8 from 14: 14 − 8 = 6.
10. Find the missing number: 32 − ____ = 24
8Subtract 24 from 32: 32 − 24 = 8.
11. Find the missing number: 34 − ____ = 29
5Subtract 29 from 34: 34 − 29 = 5.
12. Find the missing number: 39 − ____ = 34
5Subtract 34 from 39: 39 − 34 = 5.
12 questions · Seed 104776 · Age guidance, not curriculum certification
Worksheet StudioPractice pack · Ages 10-12
Missing number in subtraction
Take your time. Show your thinking.
1. Find the missing number: 38 − ____ = 10
2. Find the missing number: 30 − ____ = 13
3. Find the missing number: 57 − ____ = 29
4. Find the missing number: 31 − ____ = 23
5. Find the missing number: 49 − ____ = 20
6. Find the missing number: 66 − ____ = 33
7. Find the missing number: 28 − ____ = 17
8. Find the missing number: 51 − ____ = 29
9. Find the missing number: 14 − ____ = 8
10. Find the missing number: 32 − ____ = 24
11. Find the missing number: 34 − ____ = 29
12. Find the missing number: 39 − ____ = 34
12 questions · Seed 104776 · Age guidance, not curriculum certification
Worksheet StudioAnswer key · Ages 10-12
Missing number in subtraction
Answers and reasoning. Review before teaching.
1. Find the missing number: 38 − ____ = 10
28Subtract 10 from 38: 38 − 10 = 28.
2. Find the missing number: 30 − ____ = 13
17Subtract 13 from 30: 30 − 13 = 17.
3. Find the missing number: 57 − ____ = 29
28Subtract 29 from 57: 57 − 29 = 28.
4. Find the missing number: 31 − ____ = 23
8Subtract 23 from 31: 31 − 23 = 8.
5. Find the missing number: 49 − ____ = 20
29Subtract 20 from 49: 49 − 20 = 29.
6. Find the missing number: 66 − ____ = 33
33Subtract 33 from 66: 66 − 33 = 33.
7. Find the missing number: 28 − ____ = 17
11Subtract 17 from 28: 28 − 17 = 11.
8. Find the missing number: 51 − ____ = 29
22Subtract 29 from 51: 51 − 29 = 22.
9. Find the missing number: 14 − ____ = 8
6Subtract 8 from 14: 14 − 8 = 6.
10. Find the missing number: 32 − ____ = 24
8Subtract 24 from 32: 32 − 24 = 8.
11. Find the missing number: 34 − ____ = 29
5Subtract 29 from 34: 34 − 29 = 5.
12. Find the missing number: 39 − ____ = 34
5Subtract 34 from 39: 39 − 34 = 5.
12 questions · Seed 104776 · Age guidance, not curriculum certification