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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 − ____ = 18
2. Find the missing number: 43 − ____ = 8
3. Find the missing number: 61 − ____ = 34
4. Find the missing number: 33 − ____ = 27
5. Find the missing number: 45 − ____ = 14
6. Find the missing number: 46 − ____ = 31
7. Find the missing number: 40 − ____ = 30
8. Find the missing number: 45 − ____ = 18
9. Find the missing number: 57 − ____ = 29
10. Find the missing number: 38 − ____ = 22
11. Find the missing number: 67 − ____ = 38
12. Find the missing number: 50 − ____ = 22
12 questions · Seed 104766 · 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 − ____ = 18
31Subtract 18 from 49: 49 − 18 = 31.
2. Find the missing number: 43 − ____ = 8
35Subtract 8 from 43: 43 − 8 = 35.
3. Find the missing number: 61 − ____ = 34
27Subtract 34 from 61: 61 − 34 = 27.
4. Find the missing number: 33 − ____ = 27
6Subtract 27 from 33: 33 − 27 = 6.
5. Find the missing number: 45 − ____ = 14
31Subtract 14 from 45: 45 − 14 = 31.
6. Find the missing number: 46 − ____ = 31
15Subtract 31 from 46: 46 − 31 = 15.
7. Find the missing number: 40 − ____ = 30
10Subtract 30 from 40: 40 − 30 = 10.
8. Find the missing number: 45 − ____ = 18
27Subtract 18 from 45: 45 − 18 = 27.
9. Find the missing number: 57 − ____ = 29
28Subtract 29 from 57: 57 − 29 = 28.
10. Find the missing number: 38 − ____ = 22
16Subtract 22 from 38: 38 − 22 = 16.
11. Find the missing number: 67 − ____ = 38
29Subtract 38 from 67: 67 − 38 = 29.
12. Find the missing number: 50 − ____ = 22
28Subtract 22 from 50: 50 − 22 = 28.
12 questions · Seed 104766 · 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 − ____ = 18
2. Find the missing number: 43 − ____ = 8
3. Find the missing number: 61 − ____ = 34
4. Find the missing number: 33 − ____ = 27
5. Find the missing number: 45 − ____ = 14
6. Find the missing number: 46 − ____ = 31
7. Find the missing number: 40 − ____ = 30
8. Find the missing number: 45 − ____ = 18
9. Find the missing number: 57 − ____ = 29
10. Find the missing number: 38 − ____ = 22
11. Find the missing number: 67 − ____ = 38
12. Find the missing number: 50 − ____ = 22
12 questions · Seed 104766 · 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 − ____ = 18
31Subtract 18 from 49: 49 − 18 = 31.
2. Find the missing number: 43 − ____ = 8
35Subtract 8 from 43: 43 − 8 = 35.
3. Find the missing number: 61 − ____ = 34
27Subtract 34 from 61: 61 − 34 = 27.
4. Find the missing number: 33 − ____ = 27
6Subtract 27 from 33: 33 − 27 = 6.
5. Find the missing number: 45 − ____ = 14
31Subtract 14 from 45: 45 − 14 = 31.
6. Find the missing number: 46 − ____ = 31
15Subtract 31 from 46: 46 − 31 = 15.
7. Find the missing number: 40 − ____ = 30
10Subtract 30 from 40: 40 − 30 = 10.
8. Find the missing number: 45 − ____ = 18
27Subtract 18 from 45: 45 − 18 = 27.
9. Find the missing number: 57 − ____ = 29
28Subtract 29 from 57: 57 − 29 = 28.
10. Find the missing number: 38 − ____ = 22
16Subtract 22 from 38: 38 − 22 = 16.
11. Find the missing number: 67 − ____ = 38
29Subtract 38 from 67: 67 − 38 = 29.
12. Find the missing number: 50 − ____ = 22
28Subtract 22 from 50: 50 − 22 = 28.
12 questions · Seed 104766 · Age guidance, not curriculum certification