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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 − ____ = 25
2. Find the missing number: 34 − ____ = 4
3. Find the missing number: 53 − ____ = 25
4. Find the missing number: 56 − ____ = 30
5. Find the missing number: 56 − ____ = 35
6. Find the missing number: 65 − ____ = 38
7. Find the missing number: 46 − ____ = 26
8. Find the missing number: 51 − ____ = 36
9. Find the missing number: 42 − ____ = 10
10. Find the missing number: 32 − ____ = 27
11. Find the missing number: 37 − ____ = 23
12. Find the missing number: 63 − ____ = 32
12 questions · Seed 104775 · 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 − ____ = 25
20Subtract 25 from 45: 45 − 25 = 20.
2. Find the missing number: 34 − ____ = 4
30Subtract 4 from 34: 34 − 4 = 30.
3. Find the missing number: 53 − ____ = 25
28Subtract 25 from 53: 53 − 25 = 28.
4. Find the missing number: 56 − ____ = 30
26Subtract 30 from 56: 56 − 30 = 26.
5. Find the missing number: 56 − ____ = 35
21Subtract 35 from 56: 56 − 35 = 21.
6. Find the missing number: 65 − ____ = 38
27Subtract 38 from 65: 65 − 38 = 27.
7. Find the missing number: 46 − ____ = 26
20Subtract 26 from 46: 46 − 26 = 20.
8. Find the missing number: 51 − ____ = 36
15Subtract 36 from 51: 51 − 36 = 15.
9. Find the missing number: 42 − ____ = 10
32Subtract 10 from 42: 42 − 10 = 32.
10. Find the missing number: 32 − ____ = 27
5Subtract 27 from 32: 32 − 27 = 5.
11. Find the missing number: 37 − ____ = 23
14Subtract 23 from 37: 37 − 23 = 14.
12. Find the missing number: 63 − ____ = 32
31Subtract 32 from 63: 63 − 32 = 31.
12 questions · Seed 104775 · 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 − ____ = 25
2. Find the missing number: 34 − ____ = 4
3. Find the missing number: 53 − ____ = 25
4. Find the missing number: 56 − ____ = 30
5. Find the missing number: 56 − ____ = 35
6. Find the missing number: 65 − ____ = 38
7. Find the missing number: 46 − ____ = 26
8. Find the missing number: 51 − ____ = 36
9. Find the missing number: 42 − ____ = 10
10. Find the missing number: 32 − ____ = 27
11. Find the missing number: 37 − ____ = 23
12. Find the missing number: 63 − ____ = 32
12 questions · Seed 104775 · 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 − ____ = 25
20Subtract 25 from 45: 45 − 25 = 20.
2. Find the missing number: 34 − ____ = 4
30Subtract 4 from 34: 34 − 4 = 30.
3. Find the missing number: 53 − ____ = 25
28Subtract 25 from 53: 53 − 25 = 28.
4. Find the missing number: 56 − ____ = 30
26Subtract 30 from 56: 56 − 30 = 26.
5. Find the missing number: 56 − ____ = 35
21Subtract 35 from 56: 56 − 35 = 21.
6. Find the missing number: 65 − ____ = 38
27Subtract 38 from 65: 65 − 38 = 27.
7. Find the missing number: 46 − ____ = 26
20Subtract 26 from 46: 46 − 26 = 20.
8. Find the missing number: 51 − ____ = 36
15Subtract 36 from 51: 51 − 36 = 15.
9. Find the missing number: 42 − ____ = 10
32Subtract 10 from 42: 42 − 10 = 32.
10. Find the missing number: 32 − ____ = 27
5Subtract 27 from 32: 32 − 27 = 5.
11. Find the missing number: 37 − ____ = 23
14Subtract 23 from 37: 37 − 23 = 14.
12. Find the missing number: 63 − ____ = 32
31Subtract 32 from 63: 63 − 32 = 31.
12 questions · Seed 104775 · Age guidance, not curriculum certification