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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: 53 − ____ = 21
2. Find the missing number: 38 − ____ = 14
3. Find the missing number: 53 − ____ = 39
4. Find the missing number: 55 − ____ = 20
5. Find the missing number: 56 − ____ = 35
6. Find the missing number: 54 − ____ = 34
7. Find the missing number: 44 − ____ = 36
8. Find the missing number: 57 − ____ = 39
9. Find the missing number: 32 − ____ = 28
10. Find the missing number: 21 − ____ = 18
11. Find the missing number: 48 − ____ = 40
12. Find the missing number: 34 − ____ = 8
12 questions · Seed 94 · 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: 53 − ____ = 21
32Subtract 21 from 53: 53 − 21 = 32.
2. Find the missing number: 38 − ____ = 14
24Subtract 14 from 38: 38 − 14 = 24.
3. Find the missing number: 53 − ____ = 39
14Subtract 39 from 53: 53 − 39 = 14.
4. Find the missing number: 55 − ____ = 20
35Subtract 20 from 55: 55 − 20 = 35.
5. Find the missing number: 56 − ____ = 35
21Subtract 35 from 56: 56 − 35 = 21.
6. Find the missing number: 54 − ____ = 34
20Subtract 34 from 54: 54 − 34 = 20.
7. Find the missing number: 44 − ____ = 36
8Subtract 36 from 44: 44 − 36 = 8.
8. Find the missing number: 57 − ____ = 39
18Subtract 39 from 57: 57 − 39 = 18.
9. Find the missing number: 32 − ____ = 28
4Subtract 28 from 32: 32 − 28 = 4.
10. Find the missing number: 21 − ____ = 18
3Subtract 18 from 21: 21 − 18 = 3.
11. Find the missing number: 48 − ____ = 40
8Subtract 40 from 48: 48 − 40 = 8.
12. Find the missing number: 34 − ____ = 8
26Subtract 8 from 34: 34 − 8 = 26.
12 questions · Seed 94 · 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: 53 − ____ = 21
2. Find the missing number: 38 − ____ = 14
3. Find the missing number: 53 − ____ = 39
4. Find the missing number: 55 − ____ = 20
5. Find the missing number: 56 − ____ = 35
6. Find the missing number: 54 − ____ = 34
7. Find the missing number: 44 − ____ = 36
8. Find the missing number: 57 − ____ = 39
9. Find the missing number: 32 − ____ = 28
10. Find the missing number: 21 − ____ = 18
11. Find the missing number: 48 − ____ = 40
12. Find the missing number: 34 − ____ = 8
12 questions · Seed 94 · 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: 53 − ____ = 21
32Subtract 21 from 53: 53 − 21 = 32.
2. Find the missing number: 38 − ____ = 14
24Subtract 14 from 38: 38 − 14 = 24.
3. Find the missing number: 53 − ____ = 39
14Subtract 39 from 53: 53 − 39 = 14.
4. Find the missing number: 55 − ____ = 20
35Subtract 20 from 55: 55 − 20 = 35.
5. Find the missing number: 56 − ____ = 35
21Subtract 35 from 56: 56 − 35 = 21.
6. Find the missing number: 54 − ____ = 34
20Subtract 34 from 54: 54 − 34 = 20.
7. Find the missing number: 44 − ____ = 36
8Subtract 36 from 44: 44 − 36 = 8.
8. Find the missing number: 57 − ____ = 39
18Subtract 39 from 57: 57 − 39 = 18.
9. Find the missing number: 32 − ____ = 28
4Subtract 28 from 32: 32 − 28 = 4.
10. Find the missing number: 21 − ____ = 18
3Subtract 18 from 21: 21 − 18 = 3.
11. Find the missing number: 48 − ____ = 40
8Subtract 40 from 48: 48 − 40 = 8.
12. Find the missing number: 34 − ____ = 8
26Subtract 8 from 34: 34 − 8 = 26.
12 questions · Seed 94 · Age guidance, not curriculum certification