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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: 57 − ____ = 29
2. Find the missing number: 68 − ____ = 34
3. Find the missing number: 49 − ____ = 39
4. Find the missing number: 38 − ____ = 6
5. Find the missing number: 27 − ____ = 21
6. Find the missing number: 61 − ____ = 33
7. Find the missing number: 54 − ____ = 40
8. Find the missing number: 37 − ____ = 24
9. Find the missing number: 65 − ____ = 30
10. Find the missing number: 30 − ____ = 23
11. Find the missing number: 13 − ____ = 9
12. Find the missing number: 39 − ____ = 9
12 questions · Seed 118 · 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: 57 − ____ = 29
28Subtract 29 from 57: 57 − 29 = 28.
2. Find the missing number: 68 − ____ = 34
34Subtract 34 from 68: 68 − 34 = 34.
3. Find the missing number: 49 − ____ = 39
10Subtract 39 from 49: 49 − 39 = 10.
4. Find the missing number: 38 − ____ = 6
32Subtract 6 from 38: 38 − 6 = 32.
5. Find the missing number: 27 − ____ = 21
6Subtract 21 from 27: 27 − 21 = 6.
6. Find the missing number: 61 − ____ = 33
28Subtract 33 from 61: 61 − 33 = 28.
7. Find the missing number: 54 − ____ = 40
14Subtract 40 from 54: 54 − 40 = 14.
8. Find the missing number: 37 − ____ = 24
13Subtract 24 from 37: 37 − 24 = 13.
9. Find the missing number: 65 − ____ = 30
35Subtract 30 from 65: 65 − 30 = 35.
10. Find the missing number: 30 − ____ = 23
7Subtract 23 from 30: 30 − 23 = 7.
11. Find the missing number: 13 − ____ = 9
4Subtract 9 from 13: 13 − 9 = 4.
12. Find the missing number: 39 − ____ = 9
30Subtract 9 from 39: 39 − 9 = 30.
12 questions · Seed 118 · 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: 57 − ____ = 29
2. Find the missing number: 68 − ____ = 34
3. Find the missing number: 49 − ____ = 39
4. Find the missing number: 38 − ____ = 6
5. Find the missing number: 27 − ____ = 21
6. Find the missing number: 61 − ____ = 33
7. Find the missing number: 54 − ____ = 40
8. Find the missing number: 37 − ____ = 24
9. Find the missing number: 65 − ____ = 30
10. Find the missing number: 30 − ____ = 23
11. Find the missing number: 13 − ____ = 9
12. Find the missing number: 39 − ____ = 9
12 questions · Seed 118 · 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: 57 − ____ = 29
28Subtract 29 from 57: 57 − 29 = 28.
2. Find the missing number: 68 − ____ = 34
34Subtract 34 from 68: 68 − 34 = 34.
3. Find the missing number: 49 − ____ = 39
10Subtract 39 from 49: 49 − 39 = 10.
4. Find the missing number: 38 − ____ = 6
32Subtract 6 from 38: 38 − 6 = 32.
5. Find the missing number: 27 − ____ = 21
6Subtract 21 from 27: 27 − 21 = 6.
6. Find the missing number: 61 − ____ = 33
28Subtract 33 from 61: 61 − 33 = 28.
7. Find the missing number: 54 − ____ = 40
14Subtract 40 from 54: 54 − 40 = 14.
8. Find the missing number: 37 − ____ = 24
13Subtract 24 from 37: 37 − 24 = 13.
9. Find the missing number: 65 − ____ = 30
35Subtract 30 from 65: 65 − 30 = 35.
10. Find the missing number: 30 − ____ = 23
7Subtract 23 from 30: 30 − 23 = 7.
11. Find the missing number: 13 − ____ = 9
4Subtract 9 from 13: 13 − 9 = 4.
12. Find the missing number: 39 − ____ = 9
30Subtract 9 from 39: 39 − 9 = 30.
12 questions · Seed 118 · Age guidance, not curriculum certification