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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: 27 − ____ = 7
2. Find the missing number: 39 − ____ = 27
3. Find the missing number: 15 − ____ = 7
4. Find the missing number: 35 − ____ = 24
5. Find the missing number: 44 − ____ = 16
6. Find the missing number: 46 − ____ = 21
7. Find the missing number: 45 − ____ = 13
8. Find the missing number: 58 − ____ = 31
9. Find the missing number: 50 − ____ = 16
10. Find the missing number: 38 − ____ = 30
11. Find the missing number: 42 − ____ = 27
12. Find the missing number: 54 − ____ = 38
12 questions · Seed 48 · 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: 27 − ____ = 7
20Subtract 7 from 27: 27 − 7 = 20.
2. Find the missing number: 39 − ____ = 27
12Subtract 27 from 39: 39 − 27 = 12.
3. Find the missing number: 15 − ____ = 7
8Subtract 7 from 15: 15 − 7 = 8.
4. Find the missing number: 35 − ____ = 24
11Subtract 24 from 35: 35 − 24 = 11.
5. Find the missing number: 44 − ____ = 16
28Subtract 16 from 44: 44 − 16 = 28.
6. Find the missing number: 46 − ____ = 21
25Subtract 21 from 46: 46 − 21 = 25.
7. Find the missing number: 45 − ____ = 13
32Subtract 13 from 45: 45 − 13 = 32.
8. Find the missing number: 58 − ____ = 31
27Subtract 31 from 58: 58 − 31 = 27.
9. Find the missing number: 50 − ____ = 16
34Subtract 16 from 50: 50 − 16 = 34.
10. Find the missing number: 38 − ____ = 30
8Subtract 30 from 38: 38 − 30 = 8.
11. Find the missing number: 42 − ____ = 27
15Subtract 27 from 42: 42 − 27 = 15.
12. Find the missing number: 54 − ____ = 38
16Subtract 38 from 54: 54 − 38 = 16.
12 questions · Seed 48 · 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: 27 − ____ = 7
2. Find the missing number: 39 − ____ = 27
3. Find the missing number: 15 − ____ = 7
4. Find the missing number: 35 − ____ = 24
5. Find the missing number: 44 − ____ = 16
6. Find the missing number: 46 − ____ = 21
7. Find the missing number: 45 − ____ = 13
8. Find the missing number: 58 − ____ = 31
9. Find the missing number: 50 − ____ = 16
10. Find the missing number: 38 − ____ = 30
11. Find the missing number: 42 − ____ = 27
12. Find the missing number: 54 − ____ = 38
12 questions · Seed 48 · 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: 27 − ____ = 7
20Subtract 7 from 27: 27 − 7 = 20.
2. Find the missing number: 39 − ____ = 27
12Subtract 27 from 39: 39 − 27 = 12.
3. Find the missing number: 15 − ____ = 7
8Subtract 7 from 15: 15 − 7 = 8.
4. Find the missing number: 35 − ____ = 24
11Subtract 24 from 35: 35 − 24 = 11.
5. Find the missing number: 44 − ____ = 16
28Subtract 16 from 44: 44 − 16 = 28.
6. Find the missing number: 46 − ____ = 21
25Subtract 21 from 46: 46 − 21 = 25.
7. Find the missing number: 45 − ____ = 13
32Subtract 13 from 45: 45 − 13 = 32.
8. Find the missing number: 58 − ____ = 31
27Subtract 31 from 58: 58 − 31 = 27.
9. Find the missing number: 50 − ____ = 16
34Subtract 16 from 50: 50 − 16 = 34.
10. Find the missing number: 38 − ____ = 30
8Subtract 30 from 38: 38 − 30 = 8.
11. Find the missing number: 42 − ____ = 27
15Subtract 27 from 42: 42 − 27 = 15.
12. Find the missing number: 54 − ____ = 38
16Subtract 38 from 54: 54 − 38 = 16.
12 questions · Seed 48 · Age guidance, not curriculum certification