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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: 51 − ____ = 28
2. Find the missing number: 29 − ____ = 4
3. Find the missing number: 27 − ____ = 16
4. Find the missing number: 26 − ____ = 22
5. Find the missing number: 71 − ____ = 36
6. Find the missing number: 64 − ____ = 35
7. Find the missing number: 49 − ____ = 37
8. Find the missing number: 44 − ____ = 29
9. Find the missing number: 50 − ____ = 22
10. Find the missing number: 51 − ____ = 36
11. Find the missing number: 41 − ____ = 13
12. Find the missing number: 26 − ____ = 13
12 questions · Seed 53 · 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: 51 − ____ = 28
23Subtract 28 from 51: 51 − 28 = 23.
2. Find the missing number: 29 − ____ = 4
25Subtract 4 from 29: 29 − 4 = 25.
3. Find the missing number: 27 − ____ = 16
11Subtract 16 from 27: 27 − 16 = 11.
4. Find the missing number: 26 − ____ = 22
4Subtract 22 from 26: 26 − 22 = 4.
5. Find the missing number: 71 − ____ = 36
35Subtract 36 from 71: 71 − 36 = 35.
6. Find the missing number: 64 − ____ = 35
29Subtract 35 from 64: 64 − 35 = 29.
7. Find the missing number: 49 − ____ = 37
12Subtract 37 from 49: 49 − 37 = 12.
8. Find the missing number: 44 − ____ = 29
15Subtract 29 from 44: 44 − 29 = 15.
9. Find the missing number: 50 − ____ = 22
28Subtract 22 from 50: 50 − 22 = 28.
10. Find the missing number: 51 − ____ = 36
15Subtract 36 from 51: 51 − 36 = 15.
11. Find the missing number: 41 − ____ = 13
28Subtract 13 from 41: 41 − 13 = 28.
12. Find the missing number: 26 − ____ = 13
13Subtract 13 from 26: 26 − 13 = 13.
12 questions · Seed 53 · 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: 51 − ____ = 28
2. Find the missing number: 29 − ____ = 4
3. Find the missing number: 27 − ____ = 16
4. Find the missing number: 26 − ____ = 22
5. Find the missing number: 71 − ____ = 36
6. Find the missing number: 64 − ____ = 35
7. Find the missing number: 49 − ____ = 37
8. Find the missing number: 44 − ____ = 29
9. Find the missing number: 50 − ____ = 22
10. Find the missing number: 51 − ____ = 36
11. Find the missing number: 41 − ____ = 13
12. Find the missing number: 26 − ____ = 13
12 questions · Seed 53 · 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: 51 − ____ = 28
23Subtract 28 from 51: 51 − 28 = 23.
2. Find the missing number: 29 − ____ = 4
25Subtract 4 from 29: 29 − 4 = 25.
3. Find the missing number: 27 − ____ = 16
11Subtract 16 from 27: 27 − 16 = 11.
4. Find the missing number: 26 − ____ = 22
4Subtract 22 from 26: 26 − 22 = 4.
5. Find the missing number: 71 − ____ = 36
35Subtract 36 from 71: 71 − 36 = 35.
6. Find the missing number: 64 − ____ = 35
29Subtract 35 from 64: 64 − 35 = 29.
7. Find the missing number: 49 − ____ = 37
12Subtract 37 from 49: 49 − 37 = 12.
8. Find the missing number: 44 − ____ = 29
15Subtract 29 from 44: 44 − 29 = 15.
9. Find the missing number: 50 − ____ = 22
28Subtract 22 from 50: 50 − 22 = 28.
10. Find the missing number: 51 − ____ = 36
15Subtract 36 from 51: 51 − 36 = 15.
11. Find the missing number: 41 − ____ = 13
28Subtract 13 from 41: 41 − 13 = 28.
12. Find the missing number: 26 − ____ = 13
13Subtract 13 from 26: 26 − 13 = 13.
12 questions · Seed 53 · Age guidance, not curriculum certification