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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: 31 − ____ = 15
2. Find the missing number: 66 − ____ = 34
3. Find the missing number: 45 − ____ = 33
4. Find the missing number: 36 − ____ = 13
5. Find the missing number: 41 − ____ = 6
6. Find the missing number: 63 − ____ = 34
7. Find the missing number: 18 − ____ = 13
8. Find the missing number: 67 − ____ = 33
9. Find the missing number: 44 − ____ = 27
10. Find the missing number: 47 − ____ = 35
11. Find the missing number: 13 − ____ = 5
12. Find the missing number: 49 − ____ = 17
12 questions · Seed 104751 · 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: 31 − ____ = 15
16Subtract 15 from 31: 31 − 15 = 16.
2. Find the missing number: 66 − ____ = 34
32Subtract 34 from 66: 66 − 34 = 32.
3. Find the missing number: 45 − ____ = 33
12Subtract 33 from 45: 45 − 33 = 12.
4. Find the missing number: 36 − ____ = 13
23Subtract 13 from 36: 36 − 13 = 23.
5. Find the missing number: 41 − ____ = 6
35Subtract 6 from 41: 41 − 6 = 35.
6. Find the missing number: 63 − ____ = 34
29Subtract 34 from 63: 63 − 34 = 29.
7. Find the missing number: 18 − ____ = 13
5Subtract 13 from 18: 18 − 13 = 5.
8. Find the missing number: 67 − ____ = 33
34Subtract 33 from 67: 67 − 33 = 34.
9. Find the missing number: 44 − ____ = 27
17Subtract 27 from 44: 44 − 27 = 17.
10. Find the missing number: 47 − ____ = 35
12Subtract 35 from 47: 47 − 35 = 12.
11. Find the missing number: 13 − ____ = 5
8Subtract 5 from 13: 13 − 5 = 8.
12. Find the missing number: 49 − ____ = 17
32Subtract 17 from 49: 49 − 17 = 32.
12 questions · Seed 104751 · 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: 31 − ____ = 15
2. Find the missing number: 66 − ____ = 34
3. Find the missing number: 45 − ____ = 33
4. Find the missing number: 36 − ____ = 13
5. Find the missing number: 41 − ____ = 6
6. Find the missing number: 63 − ____ = 34
7. Find the missing number: 18 − ____ = 13
8. Find the missing number: 67 − ____ = 33
9. Find the missing number: 44 − ____ = 27
10. Find the missing number: 47 − ____ = 35
11. Find the missing number: 13 − ____ = 5
12. Find the missing number: 49 − ____ = 17
12 questions · Seed 104751 · 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: 31 − ____ = 15
16Subtract 15 from 31: 31 − 15 = 16.
2. Find the missing number: 66 − ____ = 34
32Subtract 34 from 66: 66 − 34 = 32.
3. Find the missing number: 45 − ____ = 33
12Subtract 33 from 45: 45 − 33 = 12.
4. Find the missing number: 36 − ____ = 13
23Subtract 13 from 36: 36 − 13 = 23.
5. Find the missing number: 41 − ____ = 6
35Subtract 6 from 41: 41 − 6 = 35.
6. Find the missing number: 63 − ____ = 34
29Subtract 34 from 63: 63 − 34 = 29.
7. Find the missing number: 18 − ____ = 13
5Subtract 13 from 18: 18 − 13 = 5.
8. Find the missing number: 67 − ____ = 33
34Subtract 33 from 67: 67 − 33 = 34.
9. Find the missing number: 44 − ____ = 27
17Subtract 27 from 44: 44 − 27 = 17.
10. Find the missing number: 47 − ____ = 35
12Subtract 35 from 47: 47 − 35 = 12.
11. Find the missing number: 13 − ____ = 5
8Subtract 5 from 13: 13 − 5 = 8.
12. Find the missing number: 49 − ____ = 17
32Subtract 17 from 49: 49 − 17 = 32.
12 questions · Seed 104751 · Age guidance, not curriculum certification