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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: 11 − ____ = 6
2. Find the missing number: 47 − ____ = 22
3. Find the missing number: 20 − ____ = 10
4. Find the missing number: 46 − ____ = 23
5. Find the missing number: 20 − ____ = 17
6. Find the missing number: 10 − ____ = 5
7. Find the missing number: 39 − ____ = 20
8. Find the missing number: 25 − ____ = 10
9. Find the missing number: 61 − ____ = 32
10. Find the missing number: 61 − ____ = 40
11. Find the missing number: 60 − ____ = 40
12. Find the missing number: 24 − ____ = 21
12 questions · Seed 71 · 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: 11 − ____ = 6
5Subtract 6 from 11: 11 − 6 = 5.
2. Find the missing number: 47 − ____ = 22
25Subtract 22 from 47: 47 − 22 = 25.
3. Find the missing number: 20 − ____ = 10
10Subtract 10 from 20: 20 − 10 = 10.
4. Find the missing number: 46 − ____ = 23
23Subtract 23 from 46: 46 − 23 = 23.
5. Find the missing number: 20 − ____ = 17
3Subtract 17 from 20: 20 − 17 = 3.
6. Find the missing number: 10 − ____ = 5
5Subtract 5 from 10: 10 − 5 = 5.
7. Find the missing number: 39 − ____ = 20
19Subtract 20 from 39: 39 − 20 = 19.
8. Find the missing number: 25 − ____ = 10
15Subtract 10 from 25: 25 − 10 = 15.
9. Find the missing number: 61 − ____ = 32
29Subtract 32 from 61: 61 − 32 = 29.
10. Find the missing number: 61 − ____ = 40
21Subtract 40 from 61: 61 − 40 = 21.
11. Find the missing number: 60 − ____ = 40
20Subtract 40 from 60: 60 − 40 = 20.
12. Find the missing number: 24 − ____ = 21
3Subtract 21 from 24: 24 − 21 = 3.
12 questions · Seed 71 · 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: 11 − ____ = 6
2. Find the missing number: 47 − ____ = 22
3. Find the missing number: 20 − ____ = 10
4. Find the missing number: 46 − ____ = 23
5. Find the missing number: 20 − ____ = 17
6. Find the missing number: 10 − ____ = 5
7. Find the missing number: 39 − ____ = 20
8. Find the missing number: 25 − ____ = 10
9. Find the missing number: 61 − ____ = 32
10. Find the missing number: 61 − ____ = 40
11. Find the missing number: 60 − ____ = 40
12. Find the missing number: 24 − ____ = 21
12 questions · Seed 71 · 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: 11 − ____ = 6
5Subtract 6 from 11: 11 − 6 = 5.
2. Find the missing number: 47 − ____ = 22
25Subtract 22 from 47: 47 − 22 = 25.
3. Find the missing number: 20 − ____ = 10
10Subtract 10 from 20: 20 − 10 = 10.
4. Find the missing number: 46 − ____ = 23
23Subtract 23 from 46: 46 − 23 = 23.
5. Find the missing number: 20 − ____ = 17
3Subtract 17 from 20: 20 − 17 = 3.
6. Find the missing number: 10 − ____ = 5
5Subtract 5 from 10: 10 − 5 = 5.
7. Find the missing number: 39 − ____ = 20
19Subtract 20 from 39: 39 − 20 = 19.
8. Find the missing number: 25 − ____ = 10
15Subtract 10 from 25: 25 − 10 = 15.
9. Find the missing number: 61 − ____ = 32
29Subtract 32 from 61: 61 − 32 = 29.
10. Find the missing number: 61 − ____ = 40
21Subtract 40 from 61: 61 − 40 = 21.
11. Find the missing number: 60 − ____ = 40
20Subtract 40 from 60: 60 − 40 = 20.
12. Find the missing number: 24 − ____ = 21
3Subtract 21 from 24: 24 − 21 = 3.
12 questions · Seed 71 · Age guidance, not curriculum certification