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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: 39 − ____ = 20
2. Find the missing number: 54 − ____ = 26
3. Find the missing number: 21 − ____ = 8
4. Find the missing number: 73 − ____ = 39
5. Find the missing number: 39 − ____ = 23
6. Find the missing number: 55 − ____ = 40
7. Find the missing number: 67 − ____ = 32
8. Find the missing number: 19 − ____ = 16
9. Find the missing number: 46 − ____ = 32
10. Find the missing number: 50 − ____ = 38
11. Find the missing number: 19 − ____ = 14
12. Find the missing number: 69 − ____ = 36
12 questions · Seed 63 · 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: 39 − ____ = 20
19Subtract 20 from 39: 39 − 20 = 19.
2. Find the missing number: 54 − ____ = 26
28Subtract 26 from 54: 54 − 26 = 28.
3. Find the missing number: 21 − ____ = 8
13Subtract 8 from 21: 21 − 8 = 13.
4. Find the missing number: 73 − ____ = 39
34Subtract 39 from 73: 73 − 39 = 34.
5. Find the missing number: 39 − ____ = 23
16Subtract 23 from 39: 39 − 23 = 16.
6. Find the missing number: 55 − ____ = 40
15Subtract 40 from 55: 55 − 40 = 15.
7. Find the missing number: 67 − ____ = 32
35Subtract 32 from 67: 67 − 32 = 35.
8. Find the missing number: 19 − ____ = 16
3Subtract 16 from 19: 19 − 16 = 3.
9. Find the missing number: 46 − ____ = 32
14Subtract 32 from 46: 46 − 32 = 14.
10. Find the missing number: 50 − ____ = 38
12Subtract 38 from 50: 50 − 38 = 12.
11. Find the missing number: 19 − ____ = 14
5Subtract 14 from 19: 19 − 14 = 5.
12. Find the missing number: 69 − ____ = 36
33Subtract 36 from 69: 69 − 36 = 33.
12 questions · Seed 63 · 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: 39 − ____ = 20
2. Find the missing number: 54 − ____ = 26
3. Find the missing number: 21 − ____ = 8
4. Find the missing number: 73 − ____ = 39
5. Find the missing number: 39 − ____ = 23
6. Find the missing number: 55 − ____ = 40
7. Find the missing number: 67 − ____ = 32
8. Find the missing number: 19 − ____ = 16
9. Find the missing number: 46 − ____ = 32
10. Find the missing number: 50 − ____ = 38
11. Find the missing number: 19 − ____ = 14
12. Find the missing number: 69 − ____ = 36
12 questions · Seed 63 · 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: 39 − ____ = 20
19Subtract 20 from 39: 39 − 20 = 19.
2. Find the missing number: 54 − ____ = 26
28Subtract 26 from 54: 54 − 26 = 28.
3. Find the missing number: 21 − ____ = 8
13Subtract 8 from 21: 21 − 8 = 13.
4. Find the missing number: 73 − ____ = 39
34Subtract 39 from 73: 73 − 39 = 34.
5. Find the missing number: 39 − ____ = 23
16Subtract 23 from 39: 39 − 23 = 16.
6. Find the missing number: 55 − ____ = 40
15Subtract 40 from 55: 55 − 40 = 15.
7. Find the missing number: 67 − ____ = 32
35Subtract 32 from 67: 67 − 32 = 35.
8. Find the missing number: 19 − ____ = 16
3Subtract 16 from 19: 19 − 16 = 3.
9. Find the missing number: 46 − ____ = 32
14Subtract 32 from 46: 46 − 32 = 14.
10. Find the missing number: 50 − ____ = 38
12Subtract 38 from 50: 50 − 38 = 12.
11. Find the missing number: 19 − ____ = 14
5Subtract 14 from 19: 19 − 14 = 5.
12. Find the missing number: 69 − ____ = 36
33Subtract 36 from 69: 69 − 36 = 33.
12 questions · Seed 63 · Age guidance, not curriculum certification