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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: 50 − ____ = 30
2. Find the missing number: 52 − ____ = 37
3. Find the missing number: 42 − ____ = 33
4. Find the missing number: 21 − ____ = 7
5. Find the missing number: 32 − ____ = 24
6. Find the missing number: 50 − ____ = 34
7. Find the missing number: 11 − ____ = 8
8. Find the missing number: 34 − ____ = 24
9. Find the missing number: 38 − ____ = 32
10. Find the missing number: 24 − ____ = 4
11. Find the missing number: 34 − ____ = 27
12. Find the missing number: 43 − ____ = 15
12 questions · Seed 104735 · 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: 50 − ____ = 30
20Subtract 30 from 50: 50 − 30 = 20.
2. Find the missing number: 52 − ____ = 37
15Subtract 37 from 52: 52 − 37 = 15.
3. Find the missing number: 42 − ____ = 33
9Subtract 33 from 42: 42 − 33 = 9.
4. Find the missing number: 21 − ____ = 7
14Subtract 7 from 21: 21 − 7 = 14.
5. Find the missing number: 32 − ____ = 24
8Subtract 24 from 32: 32 − 24 = 8.
6. Find the missing number: 50 − ____ = 34
16Subtract 34 from 50: 50 − 34 = 16.
7. Find the missing number: 11 − ____ = 8
3Subtract 8 from 11: 11 − 8 = 3.
8. Find the missing number: 34 − ____ = 24
10Subtract 24 from 34: 34 − 24 = 10.
9. Find the missing number: 38 − ____ = 32
6Subtract 32 from 38: 38 − 32 = 6.
10. Find the missing number: 24 − ____ = 4
20Subtract 4 from 24: 24 − 4 = 20.
11. Find the missing number: 34 − ____ = 27
7Subtract 27 from 34: 34 − 27 = 7.
12. Find the missing number: 43 − ____ = 15
28Subtract 15 from 43: 43 − 15 = 28.
12 questions · Seed 104735 · 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: 50 − ____ = 30
2. Find the missing number: 52 − ____ = 37
3. Find the missing number: 42 − ____ = 33
4. Find the missing number: 21 − ____ = 7
5. Find the missing number: 32 − ____ = 24
6. Find the missing number: 50 − ____ = 34
7. Find the missing number: 11 − ____ = 8
8. Find the missing number: 34 − ____ = 24
9. Find the missing number: 38 − ____ = 32
10. Find the missing number: 24 − ____ = 4
11. Find the missing number: 34 − ____ = 27
12. Find the missing number: 43 − ____ = 15
12 questions · Seed 104735 · 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: 50 − ____ = 30
20Subtract 30 from 50: 50 − 30 = 20.
2. Find the missing number: 52 − ____ = 37
15Subtract 37 from 52: 52 − 37 = 15.
3. Find the missing number: 42 − ____ = 33
9Subtract 33 from 42: 42 − 33 = 9.
4. Find the missing number: 21 − ____ = 7
14Subtract 7 from 21: 21 − 7 = 14.
5. Find the missing number: 32 − ____ = 24
8Subtract 24 from 32: 32 − 24 = 8.
6. Find the missing number: 50 − ____ = 34
16Subtract 34 from 50: 50 − 34 = 16.
7. Find the missing number: 11 − ____ = 8
3Subtract 8 from 11: 11 − 8 = 3.
8. Find the missing number: 34 − ____ = 24
10Subtract 24 from 34: 34 − 24 = 10.
9. Find the missing number: 38 − ____ = 32
6Subtract 32 from 38: 38 − 32 = 6.
10. Find the missing number: 24 − ____ = 4
20Subtract 4 from 24: 24 − 4 = 20.
11. Find the missing number: 34 − ____ = 27
7Subtract 27 from 34: 34 − 27 = 7.
12. Find the missing number: 43 − ____ = 15
28Subtract 15 from 43: 43 − 15 = 28.
12 questions · Seed 104735 · Age guidance, not curriculum certification