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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: 45 − ____ = 13
2. Find the missing number: 36 − ____ = 32
3. Find the missing number: 26 − ____ = 5
4. Find the missing number: 39 − ____ = 36
5. Find the missing number: 36 − ____ = 17
6. Find the missing number: 65 − ____ = 40
7. Find the missing number: 19 − ____ = 11
8. Find the missing number: 46 − ____ = 27
9. Find the missing number: 39 − ____ = 31
10. Find the missing number: 48 − ____ = 18
11. Find the missing number: 34 − ____ = 14
12. Find the missing number: 26 − ____ = 4
12 questions · Seed 73 · 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: 45 − ____ = 13
32Subtract 13 from 45: 45 − 13 = 32.
2. Find the missing number: 36 − ____ = 32
4Subtract 32 from 36: 36 − 32 = 4.
3. Find the missing number: 26 − ____ = 5
21Subtract 5 from 26: 26 − 5 = 21.
4. Find the missing number: 39 − ____ = 36
3Subtract 36 from 39: 39 − 36 = 3.
5. Find the missing number: 36 − ____ = 17
19Subtract 17 from 36: 36 − 17 = 19.
6. Find the missing number: 65 − ____ = 40
25Subtract 40 from 65: 65 − 40 = 25.
7. Find the missing number: 19 − ____ = 11
8Subtract 11 from 19: 19 − 11 = 8.
8. Find the missing number: 46 − ____ = 27
19Subtract 27 from 46: 46 − 27 = 19.
9. Find the missing number: 39 − ____ = 31
8Subtract 31 from 39: 39 − 31 = 8.
10. Find the missing number: 48 − ____ = 18
30Subtract 18 from 48: 48 − 18 = 30.
11. Find the missing number: 34 − ____ = 14
20Subtract 14 from 34: 34 − 14 = 20.
12. Find the missing number: 26 − ____ = 4
22Subtract 4 from 26: 26 − 4 = 22.
12 questions · Seed 73 · 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: 45 − ____ = 13
2. Find the missing number: 36 − ____ = 32
3. Find the missing number: 26 − ____ = 5
4. Find the missing number: 39 − ____ = 36
5. Find the missing number: 36 − ____ = 17
6. Find the missing number: 65 − ____ = 40
7. Find the missing number: 19 − ____ = 11
8. Find the missing number: 46 − ____ = 27
9. Find the missing number: 39 − ____ = 31
10. Find the missing number: 48 − ____ = 18
11. Find the missing number: 34 − ____ = 14
12. Find the missing number: 26 − ____ = 4
12 questions · Seed 73 · 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: 45 − ____ = 13
32Subtract 13 from 45: 45 − 13 = 32.
2. Find the missing number: 36 − ____ = 32
4Subtract 32 from 36: 36 − 32 = 4.
3. Find the missing number: 26 − ____ = 5
21Subtract 5 from 26: 26 − 5 = 21.
4. Find the missing number: 39 − ____ = 36
3Subtract 36 from 39: 39 − 36 = 3.
5. Find the missing number: 36 − ____ = 17
19Subtract 17 from 36: 36 − 17 = 19.
6. Find the missing number: 65 − ____ = 40
25Subtract 40 from 65: 65 − 40 = 25.
7. Find the missing number: 19 − ____ = 11
8Subtract 11 from 19: 19 − 11 = 8.
8. Find the missing number: 46 − ____ = 27
19Subtract 27 from 46: 46 − 27 = 19.
9. Find the missing number: 39 − ____ = 31
8Subtract 31 from 39: 39 − 31 = 8.
10. Find the missing number: 48 − ____ = 18
30Subtract 18 from 48: 48 − 18 = 30.
11. Find the missing number: 34 − ____ = 14
20Subtract 14 from 34: 34 − 14 = 20.
12. Find the missing number: 26 − ____ = 4
22Subtract 4 from 26: 26 − 4 = 22.
12 questions · Seed 73 · Age guidance, not curriculum certification