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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: 15 − ____ = 4
2. Find the missing number: 46 − ____ = 20
3. Find the missing number: 26 − ____ = 12
4. Find the missing number: 40 − ____ = 7
5. Find the missing number: 50 − ____ = 35
6. Find the missing number: 21 − ____ = 7
7. Find the missing number: 40 − ____ = 17
8. Find the missing number: 56 − ____ = 26
9. Find the missing number: 34 − ____ = 6
10. Find the missing number: 50 − ____ = 16
11. Find the missing number: 58 − ____ = 35
12. Find the missing number: 60 − ____ = 40
12 questions · Seed 64 · 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: 15 − ____ = 4
11Subtract 4 from 15: 15 − 4 = 11.
2. Find the missing number: 46 − ____ = 20
26Subtract 20 from 46: 46 − 20 = 26.
3. Find the missing number: 26 − ____ = 12
14Subtract 12 from 26: 26 − 12 = 14.
4. Find the missing number: 40 − ____ = 7
33Subtract 7 from 40: 40 − 7 = 33.
5. Find the missing number: 50 − ____ = 35
15Subtract 35 from 50: 50 − 35 = 15.
6. Find the missing number: 21 − ____ = 7
14Subtract 7 from 21: 21 − 7 = 14.
7. Find the missing number: 40 − ____ = 17
23Subtract 17 from 40: 40 − 17 = 23.
8. Find the missing number: 56 − ____ = 26
30Subtract 26 from 56: 56 − 26 = 30.
9. Find the missing number: 34 − ____ = 6
28Subtract 6 from 34: 34 − 6 = 28.
10. Find the missing number: 50 − ____ = 16
34Subtract 16 from 50: 50 − 16 = 34.
11. Find the missing number: 58 − ____ = 35
23Subtract 35 from 58: 58 − 35 = 23.
12. Find the missing number: 60 − ____ = 40
20Subtract 40 from 60: 60 − 40 = 20.
12 questions · Seed 64 · 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: 15 − ____ = 4
2. Find the missing number: 46 − ____ = 20
3. Find the missing number: 26 − ____ = 12
4. Find the missing number: 40 − ____ = 7
5. Find the missing number: 50 − ____ = 35
6. Find the missing number: 21 − ____ = 7
7. Find the missing number: 40 − ____ = 17
8. Find the missing number: 56 − ____ = 26
9. Find the missing number: 34 − ____ = 6
10. Find the missing number: 50 − ____ = 16
11. Find the missing number: 58 − ____ = 35
12. Find the missing number: 60 − ____ = 40
12 questions · Seed 64 · 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: 15 − ____ = 4
11Subtract 4 from 15: 15 − 4 = 11.
2. Find the missing number: 46 − ____ = 20
26Subtract 20 from 46: 46 − 20 = 26.
3. Find the missing number: 26 − ____ = 12
14Subtract 12 from 26: 26 − 12 = 14.
4. Find the missing number: 40 − ____ = 7
33Subtract 7 from 40: 40 − 7 = 33.
5. Find the missing number: 50 − ____ = 35
15Subtract 35 from 50: 50 − 35 = 15.
6. Find the missing number: 21 − ____ = 7
14Subtract 7 from 21: 21 − 7 = 14.
7. Find the missing number: 40 − ____ = 17
23Subtract 17 from 40: 40 − 17 = 23.
8. Find the missing number: 56 − ____ = 26
30Subtract 26 from 56: 56 − 26 = 30.
9. Find the missing number: 34 − ____ = 6
28Subtract 6 from 34: 34 − 6 = 28.
10. Find the missing number: 50 − ____ = 16
34Subtract 16 from 50: 50 − 16 = 34.
11. Find the missing number: 58 − ____ = 35
23Subtract 35 from 58: 58 − 35 = 23.
12. Find the missing number: 60 − ____ = 40
20Subtract 40 from 60: 60 − 40 = 20.
12 questions · Seed 64 · Age guidance, not curriculum certification