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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: 30 − ____ = 26
2. Find the missing number: 39 − ____ = 12
3. Find the missing number: 18 − ____ = 14
4. Find the missing number: 22 − ____ = 8
5. Find the missing number: 51 − ____ = 32
6. Find the missing number: 43 − ____ = 9
7. Find the missing number: 34 − ____ = 28
8. Find the missing number: 43 − ____ = 21
9. Find the missing number: 20 − ____ = 6
10. Find the missing number: 59 − ____ = 40
11. Find the missing number: 56 − ____ = 26
12. Find the missing number: 30 − ____ = 8
12 questions · Seed 104769 · 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: 30 − ____ = 26
4Subtract 26 from 30: 30 − 26 = 4.
2. Find the missing number: 39 − ____ = 12
27Subtract 12 from 39: 39 − 12 = 27.
3. Find the missing number: 18 − ____ = 14
4Subtract 14 from 18: 18 − 14 = 4.
4. Find the missing number: 22 − ____ = 8
14Subtract 8 from 22: 22 − 8 = 14.
5. Find the missing number: 51 − ____ = 32
19Subtract 32 from 51: 51 − 32 = 19.
6. Find the missing number: 43 − ____ = 9
34Subtract 9 from 43: 43 − 9 = 34.
7. Find the missing number: 34 − ____ = 28
6Subtract 28 from 34: 34 − 28 = 6.
8. Find the missing number: 43 − ____ = 21
22Subtract 21 from 43: 43 − 21 = 22.
9. Find the missing number: 20 − ____ = 6
14Subtract 6 from 20: 20 − 6 = 14.
10. Find the missing number: 59 − ____ = 40
19Subtract 40 from 59: 59 − 40 = 19.
11. Find the missing number: 56 − ____ = 26
30Subtract 26 from 56: 56 − 26 = 30.
12. Find the missing number: 30 − ____ = 8
22Subtract 8 from 30: 30 − 8 = 22.
12 questions · Seed 104769 · 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: 30 − ____ = 26
2. Find the missing number: 39 − ____ = 12
3. Find the missing number: 18 − ____ = 14
4. Find the missing number: 22 − ____ = 8
5. Find the missing number: 51 − ____ = 32
6. Find the missing number: 43 − ____ = 9
7. Find the missing number: 34 − ____ = 28
8. Find the missing number: 43 − ____ = 21
9. Find the missing number: 20 − ____ = 6
10. Find the missing number: 59 − ____ = 40
11. Find the missing number: 56 − ____ = 26
12. Find the missing number: 30 − ____ = 8
12 questions · Seed 104769 · 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: 30 − ____ = 26
4Subtract 26 from 30: 30 − 26 = 4.
2. Find the missing number: 39 − ____ = 12
27Subtract 12 from 39: 39 − 12 = 27.
3. Find the missing number: 18 − ____ = 14
4Subtract 14 from 18: 18 − 14 = 4.
4. Find the missing number: 22 − ____ = 8
14Subtract 8 from 22: 22 − 8 = 14.
5. Find the missing number: 51 − ____ = 32
19Subtract 32 from 51: 51 − 32 = 19.
6. Find the missing number: 43 − ____ = 9
34Subtract 9 from 43: 43 − 9 = 34.
7. Find the missing number: 34 − ____ = 28
6Subtract 28 from 34: 34 − 28 = 6.
8. Find the missing number: 43 − ____ = 21
22Subtract 21 from 43: 43 − 21 = 22.
9. Find the missing number: 20 − ____ = 6
14Subtract 6 from 20: 20 − 6 = 14.
10. Find the missing number: 59 − ____ = 40
19Subtract 40 from 59: 59 − 40 = 19.
11. Find the missing number: 56 − ____ = 26
30Subtract 26 from 56: 56 − 26 = 30.
12. Find the missing number: 30 − ____ = 8
22Subtract 8 from 30: 30 − 8 = 22.
12 questions · Seed 104769 · Age guidance, not curriculum certification