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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: 56 − ____ = 33
2. Find the missing number: 40 − ____ = 12
3. Find the missing number: 37 − ____ = 29
4. Find the missing number: 26 − ____ = 8
5. Find the missing number: 12 − ____ = 6
6. Find the missing number: 31 − ____ = 11
7. Find the missing number: 49 − ____ = 32
8. Find the missing number: 41 − ____ = 22
9. Find the missing number: 45 − ____ = 27
10. Find the missing number: 19 − ____ = 15
11. Find the missing number: 36 − ____ = 25
12. Find the missing number: 50 − ____ = 36
12 questions · Seed 89 · 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: 56 − ____ = 33
23Subtract 33 from 56: 56 − 33 = 23.
2. Find the missing number: 40 − ____ = 12
28Subtract 12 from 40: 40 − 12 = 28.
3. Find the missing number: 37 − ____ = 29
8Subtract 29 from 37: 37 − 29 = 8.
4. Find the missing number: 26 − ____ = 8
18Subtract 8 from 26: 26 − 8 = 18.
5. Find the missing number: 12 − ____ = 6
6Subtract 6 from 12: 12 − 6 = 6.
6. Find the missing number: 31 − ____ = 11
20Subtract 11 from 31: 31 − 11 = 20.
7. Find the missing number: 49 − ____ = 32
17Subtract 32 from 49: 49 − 32 = 17.
8. Find the missing number: 41 − ____ = 22
19Subtract 22 from 41: 41 − 22 = 19.
9. Find the missing number: 45 − ____ = 27
18Subtract 27 from 45: 45 − 27 = 18.
10. Find the missing number: 19 − ____ = 15
4Subtract 15 from 19: 19 − 15 = 4.
11. Find the missing number: 36 − ____ = 25
11Subtract 25 from 36: 36 − 25 = 11.
12. Find the missing number: 50 − ____ = 36
14Subtract 36 from 50: 50 − 36 = 14.
12 questions · Seed 89 · 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: 56 − ____ = 33
2. Find the missing number: 40 − ____ = 12
3. Find the missing number: 37 − ____ = 29
4. Find the missing number: 26 − ____ = 8
5. Find the missing number: 12 − ____ = 6
6. Find the missing number: 31 − ____ = 11
7. Find the missing number: 49 − ____ = 32
8. Find the missing number: 41 − ____ = 22
9. Find the missing number: 45 − ____ = 27
10. Find the missing number: 19 − ____ = 15
11. Find the missing number: 36 − ____ = 25
12. Find the missing number: 50 − ____ = 36
12 questions · Seed 89 · 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: 56 − ____ = 33
23Subtract 33 from 56: 56 − 33 = 23.
2. Find the missing number: 40 − ____ = 12
28Subtract 12 from 40: 40 − 12 = 28.
3. Find the missing number: 37 − ____ = 29
8Subtract 29 from 37: 37 − 29 = 8.
4. Find the missing number: 26 − ____ = 8
18Subtract 8 from 26: 26 − 8 = 18.
5. Find the missing number: 12 − ____ = 6
6Subtract 6 from 12: 12 − 6 = 6.
6. Find the missing number: 31 − ____ = 11
20Subtract 11 from 31: 31 − 11 = 20.
7. Find the missing number: 49 − ____ = 32
17Subtract 32 from 49: 49 − 32 = 17.
8. Find the missing number: 41 − ____ = 22
19Subtract 22 from 41: 41 − 22 = 19.
9. Find the missing number: 45 − ____ = 27
18Subtract 27 from 45: 45 − 27 = 18.
10. Find the missing number: 19 − ____ = 15
4Subtract 15 from 19: 19 − 15 = 4.
11. Find the missing number: 36 − ____ = 25
11Subtract 25 from 36: 36 − 25 = 11.
12. Find the missing number: 50 − ____ = 36
14Subtract 36 from 50: 50 − 36 = 14.
12 questions · Seed 89 · Age guidance, not curriculum certification