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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: 57 − ____ = 30
2. Find the missing number: 38 − ____ = 34
3. Find the missing number: 31 − ____ = 7
4. Find the missing number: 38 − ____ = 31
5. Find the missing number: 57 − ____ = 36
6. Find the missing number: 34 − ____ = 12
7. Find the missing number: 51 − ____ = 25
8. Find the missing number: 26 − ____ = 5
9. Find the missing number: 43 − ____ = 21
10. Find the missing number: 44 − ____ = 21
11. Find the missing number: 11 − ____ = 5
12. Find the missing number: 48 − ____ = 38
12 questions · Seed 104 · 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: 57 − ____ = 30
27Subtract 30 from 57: 57 − 30 = 27.
2. Find the missing number: 38 − ____ = 34
4Subtract 34 from 38: 38 − 34 = 4.
3. Find the missing number: 31 − ____ = 7
24Subtract 7 from 31: 31 − 7 = 24.
4. Find the missing number: 38 − ____ = 31
7Subtract 31 from 38: 38 − 31 = 7.
5. Find the missing number: 57 − ____ = 36
21Subtract 36 from 57: 57 − 36 = 21.
6. Find the missing number: 34 − ____ = 12
22Subtract 12 from 34: 34 − 12 = 22.
7. Find the missing number: 51 − ____ = 25
26Subtract 25 from 51: 51 − 25 = 26.
8. Find the missing number: 26 − ____ = 5
21Subtract 5 from 26: 26 − 5 = 21.
9. Find the missing number: 43 − ____ = 21
22Subtract 21 from 43: 43 − 21 = 22.
10. Find the missing number: 44 − ____ = 21
23Subtract 21 from 44: 44 − 21 = 23.
11. Find the missing number: 11 − ____ = 5
6Subtract 5 from 11: 11 − 5 = 6.
12. Find the missing number: 48 − ____ = 38
10Subtract 38 from 48: 48 − 38 = 10.
12 questions · Seed 104 · 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: 57 − ____ = 30
2. Find the missing number: 38 − ____ = 34
3. Find the missing number: 31 − ____ = 7
4. Find the missing number: 38 − ____ = 31
5. Find the missing number: 57 − ____ = 36
6. Find the missing number: 34 − ____ = 12
7. Find the missing number: 51 − ____ = 25
8. Find the missing number: 26 − ____ = 5
9. Find the missing number: 43 − ____ = 21
10. Find the missing number: 44 − ____ = 21
11. Find the missing number: 11 − ____ = 5
12. Find the missing number: 48 − ____ = 38
12 questions · Seed 104 · 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: 57 − ____ = 30
27Subtract 30 from 57: 57 − 30 = 27.
2. Find the missing number: 38 − ____ = 34
4Subtract 34 from 38: 38 − 34 = 4.
3. Find the missing number: 31 − ____ = 7
24Subtract 7 from 31: 31 − 7 = 24.
4. Find the missing number: 38 − ____ = 31
7Subtract 31 from 38: 38 − 31 = 7.
5. Find the missing number: 57 − ____ = 36
21Subtract 36 from 57: 57 − 36 = 21.
6. Find the missing number: 34 − ____ = 12
22Subtract 12 from 34: 34 − 12 = 22.
7. Find the missing number: 51 − ____ = 25
26Subtract 25 from 51: 51 − 25 = 26.
8. Find the missing number: 26 − ____ = 5
21Subtract 5 from 26: 26 − 5 = 21.
9. Find the missing number: 43 − ____ = 21
22Subtract 21 from 43: 43 − 21 = 22.
10. Find the missing number: 44 − ____ = 21
23Subtract 21 from 44: 44 − 21 = 23.
11. Find the missing number: 11 − ____ = 5
6Subtract 5 from 11: 11 − 5 = 6.
12. Find the missing number: 48 − ____ = 38
10Subtract 38 from 48: 48 − 38 = 10.
12 questions · Seed 104 · Age guidance, not curriculum certification