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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 10-12
Missing number in subtraction
Take your time. Show your thinking.
1. Find the missing number: 49 − ____ = 30
2. Find the missing number: 29 − ____ = 6
3. Find the missing number: 13 − ____ = 8
4. Find the missing number: 54 − ____ = 35
5. Find the missing number: 22 − ____ = 4
6. Find the missing number: 38 − ____ = 7
7. Find the missing number: 46 − ____ = 11
8. Find the missing number: 40 − ____ = 11
9. Find the missing number: 52 − ____ = 38
10. Find the missing number: 42 − ____ = 12
11. Find the missing number: 12 − ____ = 4
12. Find the missing number: 39 − ____ = 13
12 questions · Seed 44 · Age guidance, not curriculum certification
View the answer key
Worksheet StudioAnswer key · Ages 10-12
Missing number in subtraction
Answers and reasoning. Review before teaching.
1. Find the missing number: 49 − ____ = 30
19Subtract 30 from 49: 49 − 30 = 19.
2. Find the missing number: 29 − ____ = 6
23Subtract 6 from 29: 29 − 6 = 23.
3. Find the missing number: 13 − ____ = 8
5Subtract 8 from 13: 13 − 8 = 5.
4. Find the missing number: 54 − ____ = 35
19Subtract 35 from 54: 54 − 35 = 19.
5. Find the missing number: 22 − ____ = 4
18Subtract 4 from 22: 22 − 4 = 18.
6. Find the missing number: 38 − ____ = 7
31Subtract 7 from 38: 38 − 7 = 31.
7. Find the missing number: 46 − ____ = 11
35Subtract 11 from 46: 46 − 11 = 35.
8. Find the missing number: 40 − ____ = 11
29Subtract 11 from 40: 40 − 11 = 29.
9. Find the missing number: 52 − ____ = 38
14Subtract 38 from 52: 52 − 38 = 14.
10. Find the missing number: 42 − ____ = 12
30Subtract 12 from 42: 42 − 12 = 30.
11. Find the missing number: 12 − ____ = 4
8Subtract 4 from 12: 12 − 4 = 8.
12. Find the missing number: 39 − ____ = 13
26Subtract 13 from 39: 39 − 13 = 26.
12 questions · Seed 44 · Age guidance, not curriculum certification
Worksheet StudioPractice pack · Ages 10-12
Missing number in subtraction
Take your time. Show your thinking.
1. Find the missing number: 49 − ____ = 30
2. Find the missing number: 29 − ____ = 6
3. Find the missing number: 13 − ____ = 8
4. Find the missing number: 54 − ____ = 35
5. Find the missing number: 22 − ____ = 4
6. Find the missing number: 38 − ____ = 7
7. Find the missing number: 46 − ____ = 11
8. Find the missing number: 40 − ____ = 11
9. Find the missing number: 52 − ____ = 38
10. Find the missing number: 42 − ____ = 12
11. Find the missing number: 12 − ____ = 4
12. Find the missing number: 39 − ____ = 13
12 questions · Seed 44 · Age guidance, not curriculum certification
Worksheet StudioAnswer key · Ages 10-12
Missing number in subtraction
Answers and reasoning. Review before teaching.
1. Find the missing number: 49 − ____ = 30
19Subtract 30 from 49: 49 − 30 = 19.
2. Find the missing number: 29 − ____ = 6
23Subtract 6 from 29: 29 − 6 = 23.
3. Find the missing number: 13 − ____ = 8
5Subtract 8 from 13: 13 − 8 = 5.
4. Find the missing number: 54 − ____ = 35
19Subtract 35 from 54: 54 − 35 = 19.
5. Find the missing number: 22 − ____ = 4
18Subtract 4 from 22: 22 − 4 = 18.
6. Find the missing number: 38 − ____ = 7
31Subtract 7 from 38: 38 − 7 = 31.
7. Find the missing number: 46 − ____ = 11
35Subtract 11 from 46: 46 − 11 = 35.
8. Find the missing number: 40 − ____ = 11
29Subtract 11 from 40: 40 − 11 = 29.
9. Find the missing number: 52 − ____ = 38
14Subtract 38 from 52: 52 − 38 = 14.
10. Find the missing number: 42 − ____ = 12
30Subtract 12 from 42: 42 − 12 = 30.
11. Find the missing number: 12 − ____ = 4
8Subtract 4 from 12: 12 − 4 = 8.
12. Find the missing number: 39 − ____ = 13
26Subtract 13 from 39: 39 − 13 = 26.
12 questions · Seed 44 · Age guidance, not curriculum certification