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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: 35 − ____ = 7
2. Find the missing number: 41 − ____ = 20
3. Find the missing number: 42 − ____ = 16
4. Find the missing number: 44 − ____ = 31
5. Find the missing number: 63 − ____ = 33
6. Find the missing number: 18 − ____ = 8
7. Find the missing number: 9 − ____ = 5
8. Find the missing number: 51 − ____ = 19
9. Find the missing number: 29 − ____ = 5
10. Find the missing number: 49 − ____ = 26
11. Find the missing number: 44 − ____ = 24
12. Find the missing number: 42 − ____ = 26
12 questions · Seed 106 · 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: 35 − ____ = 7
28Subtract 7 from 35: 35 − 7 = 28.
2. Find the missing number: 41 − ____ = 20
21Subtract 20 from 41: 41 − 20 = 21.
3. Find the missing number: 42 − ____ = 16
26Subtract 16 from 42: 42 − 16 = 26.
4. Find the missing number: 44 − ____ = 31
13Subtract 31 from 44: 44 − 31 = 13.
5. Find the missing number: 63 − ____ = 33
30Subtract 33 from 63: 63 − 33 = 30.
6. Find the missing number: 18 − ____ = 8
10Subtract 8 from 18: 18 − 8 = 10.
7. Find the missing number: 9 − ____ = 5
4Subtract 5 from 9: 9 − 5 = 4.
8. Find the missing number: 51 − ____ = 19
32Subtract 19 from 51: 51 − 19 = 32.
9. Find the missing number: 29 − ____ = 5
24Subtract 5 from 29: 29 − 5 = 24.
10. Find the missing number: 49 − ____ = 26
23Subtract 26 from 49: 49 − 26 = 23.
11. Find the missing number: 44 − ____ = 24
20Subtract 24 from 44: 44 − 24 = 20.
12. Find the missing number: 42 − ____ = 26
16Subtract 26 from 42: 42 − 26 = 16.
12 questions · Seed 106 · 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: 35 − ____ = 7
2. Find the missing number: 41 − ____ = 20
3. Find the missing number: 42 − ____ = 16
4. Find the missing number: 44 − ____ = 31
5. Find the missing number: 63 − ____ = 33
6. Find the missing number: 18 − ____ = 8
7. Find the missing number: 9 − ____ = 5
8. Find the missing number: 51 − ____ = 19
9. Find the missing number: 29 − ____ = 5
10. Find the missing number: 49 − ____ = 26
11. Find the missing number: 44 − ____ = 24
12. Find the missing number: 42 − ____ = 26
12 questions · Seed 106 · 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: 35 − ____ = 7
28Subtract 7 from 35: 35 − 7 = 28.
2. Find the missing number: 41 − ____ = 20
21Subtract 20 from 41: 41 − 20 = 21.
3. Find the missing number: 42 − ____ = 16
26Subtract 16 from 42: 42 − 16 = 26.
4. Find the missing number: 44 − ____ = 31
13Subtract 31 from 44: 44 − 31 = 13.
5. Find the missing number: 63 − ____ = 33
30Subtract 33 from 63: 63 − 33 = 30.
6. Find the missing number: 18 − ____ = 8
10Subtract 8 from 18: 18 − 8 = 10.
7. Find the missing number: 9 − ____ = 5
4Subtract 5 from 9: 9 − 5 = 4.
8. Find the missing number: 51 − ____ = 19
32Subtract 19 from 51: 51 − 19 = 32.
9. Find the missing number: 29 − ____ = 5
24Subtract 5 from 29: 29 − 5 = 24.
10. Find the missing number: 49 − ____ = 26
23Subtract 26 from 49: 49 − 26 = 23.
11. Find the missing number: 44 − ____ = 24
20Subtract 24 from 44: 44 − 24 = 20.
12. Find the missing number: 42 − ____ = 26
16Subtract 26 from 42: 42 − 26 = 16.
12 questions · Seed 106 · Age guidance, not curriculum certification