Back to worksheetsMathsAges 10-12
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: 40 − ____ = 31
2. Find the missing number: 56 − ____ = 33
3. Find the missing number: 48 − ____ = 36
4. Find the missing number: 40 − ____ = 19
5. Find the missing number: 44 − ____ = 32
6. Find the missing number: 54 − ____ = 24
7. Find the missing number: 29 − ____ = 25
8. Find the missing number: 45 − ____ = 23
9. Find the missing number: 7 − ____ = 4
10. Find the missing number: 55 − ____ = 40
11. Find the missing number: 45 − ____ = 36
12. Find the missing number: 26 − ____ = 5
12 questions · Seed 104733 · 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: 40 − ____ = 31
9Subtract 31 from 40: 40 − 31 = 9.
2. Find the missing number: 56 − ____ = 33
23Subtract 33 from 56: 56 − 33 = 23.
3. Find the missing number: 48 − ____ = 36
12Subtract 36 from 48: 48 − 36 = 12.
4. Find the missing number: 40 − ____ = 19
21Subtract 19 from 40: 40 − 19 = 21.
5. Find the missing number: 44 − ____ = 32
12Subtract 32 from 44: 44 − 32 = 12.
6. Find the missing number: 54 − ____ = 24
30Subtract 24 from 54: 54 − 24 = 30.
7. Find the missing number: 29 − ____ = 25
4Subtract 25 from 29: 29 − 25 = 4.
8. Find the missing number: 45 − ____ = 23
22Subtract 23 from 45: 45 − 23 = 22.
9. Find the missing number: 7 − ____ = 4
3Subtract 4 from 7: 7 − 4 = 3.
10. Find the missing number: 55 − ____ = 40
15Subtract 40 from 55: 55 − 40 = 15.
11. Find the missing number: 45 − ____ = 36
9Subtract 36 from 45: 45 − 36 = 9.
12. Find the missing number: 26 − ____ = 5
21Subtract 5 from 26: 26 − 5 = 21.
12 questions · Seed 104733 · 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: 40 − ____ = 31
2. Find the missing number: 56 − ____ = 33
3. Find the missing number: 48 − ____ = 36
4. Find the missing number: 40 − ____ = 19
5. Find the missing number: 44 − ____ = 32
6. Find the missing number: 54 − ____ = 24
7. Find the missing number: 29 − ____ = 25
8. Find the missing number: 45 − ____ = 23
9. Find the missing number: 7 − ____ = 4
10. Find the missing number: 55 − ____ = 40
11. Find the missing number: 45 − ____ = 36
12. Find the missing number: 26 − ____ = 5
12 questions · Seed 104733 · 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: 40 − ____ = 31
9Subtract 31 from 40: 40 − 31 = 9.
2. Find the missing number: 56 − ____ = 33
23Subtract 33 from 56: 56 − 33 = 23.
3. Find the missing number: 48 − ____ = 36
12Subtract 36 from 48: 48 − 36 = 12.
4. Find the missing number: 40 − ____ = 19
21Subtract 19 from 40: 40 − 19 = 21.
5. Find the missing number: 44 − ____ = 32
12Subtract 32 from 44: 44 − 32 = 12.
6. Find the missing number: 54 − ____ = 24
30Subtract 24 from 54: 54 − 24 = 30.
7. Find the missing number: 29 − ____ = 25
4Subtract 25 from 29: 29 − 25 = 4.
8. Find the missing number: 45 − ____ = 23
22Subtract 23 from 45: 45 − 23 = 22.
9. Find the missing number: 7 − ____ = 4
3Subtract 4 from 7: 7 − 4 = 3.
10. Find the missing number: 55 − ____ = 40
15Subtract 40 from 55: 55 − 40 = 15.
11. Find the missing number: 45 − ____ = 36
9Subtract 36 from 45: 45 − 36 = 9.
12. Find the missing number: 26 − ____ = 5
21Subtract 5 from 26: 26 − 5 = 21.
12 questions · Seed 104733 · Age guidance, not curriculum certification