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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 7-9
Missing number in subtraction
Take your time. Show your thinking.
1. Find the missing number: 29 − ____ = 16
2. Find the missing number: 31 − ____ = 27
3. Find the missing number: 44 − ____ = 20
4. Find the missing number: 45 − ____ = 37
5. Find the missing number: 45 − ____ = 23
6. Find the missing number: 20 − ____ = 15
7. Find the missing number: 17 − ____ = 7
8. Find the missing number: 57 − ____ = 28
9. Find the missing number: 22 − ____ = 6
10. Find the missing number: 50 − ____ = 17
11. Find the missing number: 42 − ____ = 8
12. Find the missing number: 40 − ____ = 7
12 questions · Seed 47 · Age guidance, not curriculum certification
View the answer key
Worksheet StudioAnswer key · Ages 7-9
Missing number in subtraction
Answers and reasoning. Review before teaching.
1. Find the missing number: 29 − ____ = 16
13Subtract 16 from 29: 29 − 16 = 13.
2. Find the missing number: 31 − ____ = 27
4Subtract 27 from 31: 31 − 27 = 4.
3. Find the missing number: 44 − ____ = 20
24Subtract 20 from 44: 44 − 20 = 24.
4. Find the missing number: 45 − ____ = 37
8Subtract 37 from 45: 45 − 37 = 8.
5. Find the missing number: 45 − ____ = 23
22Subtract 23 from 45: 45 − 23 = 22.
6. Find the missing number: 20 − ____ = 15
5Subtract 15 from 20: 20 − 15 = 5.
7. Find the missing number: 17 − ____ = 7
10Subtract 7 from 17: 17 − 7 = 10.
8. Find the missing number: 57 − ____ = 28
29Subtract 28 from 57: 57 − 28 = 29.
9. Find the missing number: 22 − ____ = 6
16Subtract 6 from 22: 22 − 6 = 16.
10. Find the missing number: 50 − ____ = 17
33Subtract 17 from 50: 50 − 17 = 33.
11. Find the missing number: 42 − ____ = 8
34Subtract 8 from 42: 42 − 8 = 34.
12. Find the missing number: 40 − ____ = 7
33Subtract 7 from 40: 40 − 7 = 33.
12 questions · Seed 47 · Age guidance, not curriculum certification
Worksheet StudioPractice pack · Ages 7-9
Missing number in subtraction
Take your time. Show your thinking.
1. Find the missing number: 29 − ____ = 16
2. Find the missing number: 31 − ____ = 27
3. Find the missing number: 44 − ____ = 20
4. Find the missing number: 45 − ____ = 37
5. Find the missing number: 45 − ____ = 23
6. Find the missing number: 20 − ____ = 15
7. Find the missing number: 17 − ____ = 7
8. Find the missing number: 57 − ____ = 28
9. Find the missing number: 22 − ____ = 6
10. Find the missing number: 50 − ____ = 17
11. Find the missing number: 42 − ____ = 8
12. Find the missing number: 40 − ____ = 7
12 questions · Seed 47 · Age guidance, not curriculum certification
Worksheet StudioAnswer key · Ages 7-9
Missing number in subtraction
Answers and reasoning. Review before teaching.
1. Find the missing number: 29 − ____ = 16
13Subtract 16 from 29: 29 − 16 = 13.
2. Find the missing number: 31 − ____ = 27
4Subtract 27 from 31: 31 − 27 = 4.
3. Find the missing number: 44 − ____ = 20
24Subtract 20 from 44: 44 − 20 = 24.
4. Find the missing number: 45 − ____ = 37
8Subtract 37 from 45: 45 − 37 = 8.
5. Find the missing number: 45 − ____ = 23
22Subtract 23 from 45: 45 − 23 = 22.
6. Find the missing number: 20 − ____ = 15
5Subtract 15 from 20: 20 − 15 = 5.
7. Find the missing number: 17 − ____ = 7
10Subtract 7 from 17: 17 − 7 = 10.
8. Find the missing number: 57 − ____ = 28
29Subtract 28 from 57: 57 − 28 = 29.
9. Find the missing number: 22 − ____ = 6
16Subtract 6 from 22: 22 − 6 = 16.
10. Find the missing number: 50 − ____ = 17
33Subtract 17 from 50: 50 − 17 = 33.
11. Find the missing number: 42 − ____ = 8
34Subtract 8 from 42: 42 − 8 = 34.
12. Find the missing number: 40 − ____ = 7
33Subtract 7 from 40: 40 − 7 = 33.
12 questions · Seed 47 · Age guidance, not curriculum certification