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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: 51 − ____ = 36
2. Find the missing number: 34 − ____ = 7
3. Find the missing number: 50 − ____ = 20
4. Find the missing number: 58 − ____ = 28
5. Find the missing number: 45 − ____ = 32
6. Find the missing number: 30 − ____ = 27
7. Find the missing number: 51 − ____ = 23
8. Find the missing number: 20 − ____ = 6
9. Find the missing number: 47 − ____ = 30
10. Find the missing number: 38 − ____ = 24
11. Find the missing number: 41 − ____ = 16
12. Find the missing number: 45 − ____ = 37
12 questions · Seed 72 · 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: 51 − ____ = 36
15Subtract 36 from 51: 51 − 36 = 15.
2. Find the missing number: 34 − ____ = 7
27Subtract 7 from 34: 34 − 7 = 27.
3. Find the missing number: 50 − ____ = 20
30Subtract 20 from 50: 50 − 20 = 30.
4. Find the missing number: 58 − ____ = 28
30Subtract 28 from 58: 58 − 28 = 30.
5. Find the missing number: 45 − ____ = 32
13Subtract 32 from 45: 45 − 32 = 13.
6. Find the missing number: 30 − ____ = 27
3Subtract 27 from 30: 30 − 27 = 3.
7. Find the missing number: 51 − ____ = 23
28Subtract 23 from 51: 51 − 23 = 28.
8. Find the missing number: 20 − ____ = 6
14Subtract 6 from 20: 20 − 6 = 14.
9. Find the missing number: 47 − ____ = 30
17Subtract 30 from 47: 47 − 30 = 17.
10. Find the missing number: 38 − ____ = 24
14Subtract 24 from 38: 38 − 24 = 14.
11. Find the missing number: 41 − ____ = 16
25Subtract 16 from 41: 41 − 16 = 25.
12. Find the missing number: 45 − ____ = 37
8Subtract 37 from 45: 45 − 37 = 8.
12 questions · Seed 72 · 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: 51 − ____ = 36
2. Find the missing number: 34 − ____ = 7
3. Find the missing number: 50 − ____ = 20
4. Find the missing number: 58 − ____ = 28
5. Find the missing number: 45 − ____ = 32
6. Find the missing number: 30 − ____ = 27
7. Find the missing number: 51 − ____ = 23
8. Find the missing number: 20 − ____ = 6
9. Find the missing number: 47 − ____ = 30
10. Find the missing number: 38 − ____ = 24
11. Find the missing number: 41 − ____ = 16
12. Find the missing number: 45 − ____ = 37
12 questions · Seed 72 · 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: 51 − ____ = 36
15Subtract 36 from 51: 51 − 36 = 15.
2. Find the missing number: 34 − ____ = 7
27Subtract 7 from 34: 34 − 7 = 27.
3. Find the missing number: 50 − ____ = 20
30Subtract 20 from 50: 50 − 20 = 30.
4. Find the missing number: 58 − ____ = 28
30Subtract 28 from 58: 58 − 28 = 30.
5. Find the missing number: 45 − ____ = 32
13Subtract 32 from 45: 45 − 32 = 13.
6. Find the missing number: 30 − ____ = 27
3Subtract 27 from 30: 30 − 27 = 3.
7. Find the missing number: 51 − ____ = 23
28Subtract 23 from 51: 51 − 23 = 28.
8. Find the missing number: 20 − ____ = 6
14Subtract 6 from 20: 20 − 6 = 14.
9. Find the missing number: 47 − ____ = 30
17Subtract 30 from 47: 47 − 30 = 17.
10. Find the missing number: 38 − ____ = 24
14Subtract 24 from 38: 38 − 24 = 14.
11. Find the missing number: 41 − ____ = 16
25Subtract 16 from 41: 41 − 16 = 25.
12. Find the missing number: 45 − ____ = 37
8Subtract 37 from 45: 45 − 37 = 8.
12 questions · Seed 72 · Age guidance, not curriculum certification