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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: 57 − ____ = 28
2. Find the missing number: 42 − ____ = 18
3. Find the missing number: 51 − ____ = 33
4. Find the missing number: 47 − ____ = 38
5. Find the missing number: 45 − ____ = 33
6. Find the missing number: 46 − ____ = 26
7. Find the missing number: 52 − ____ = 24
8. Find the missing number: 60 − ____ = 29
9. Find the missing number: 39 − ____ = 25
10. Find the missing number: 35 − ____ = 12
11. Find the missing number: 36 − ____ = 29
12. Find the missing number: 54 − ____ = 29
12 questions · Seed 68 · 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: 57 − ____ = 28
29Subtract 28 from 57: 57 − 28 = 29.
2. Find the missing number: 42 − ____ = 18
24Subtract 18 from 42: 42 − 18 = 24.
3. Find the missing number: 51 − ____ = 33
18Subtract 33 from 51: 51 − 33 = 18.
4. Find the missing number: 47 − ____ = 38
9Subtract 38 from 47: 47 − 38 = 9.
5. Find the missing number: 45 − ____ = 33
12Subtract 33 from 45: 45 − 33 = 12.
6. Find the missing number: 46 − ____ = 26
20Subtract 26 from 46: 46 − 26 = 20.
7. Find the missing number: 52 − ____ = 24
28Subtract 24 from 52: 52 − 24 = 28.
8. Find the missing number: 60 − ____ = 29
31Subtract 29 from 60: 60 − 29 = 31.
9. Find the missing number: 39 − ____ = 25
14Subtract 25 from 39: 39 − 25 = 14.
10. Find the missing number: 35 − ____ = 12
23Subtract 12 from 35: 35 − 12 = 23.
11. Find the missing number: 36 − ____ = 29
7Subtract 29 from 36: 36 − 29 = 7.
12. Find the missing number: 54 − ____ = 29
25Subtract 29 from 54: 54 − 29 = 25.
12 questions · Seed 68 · 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: 57 − ____ = 28
2. Find the missing number: 42 − ____ = 18
3. Find the missing number: 51 − ____ = 33
4. Find the missing number: 47 − ____ = 38
5. Find the missing number: 45 − ____ = 33
6. Find the missing number: 46 − ____ = 26
7. Find the missing number: 52 − ____ = 24
8. Find the missing number: 60 − ____ = 29
9. Find the missing number: 39 − ____ = 25
10. Find the missing number: 35 − ____ = 12
11. Find the missing number: 36 − ____ = 29
12. Find the missing number: 54 − ____ = 29
12 questions · Seed 68 · 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: 57 − ____ = 28
29Subtract 28 from 57: 57 − 28 = 29.
2. Find the missing number: 42 − ____ = 18
24Subtract 18 from 42: 42 − 18 = 24.
3. Find the missing number: 51 − ____ = 33
18Subtract 33 from 51: 51 − 33 = 18.
4. Find the missing number: 47 − ____ = 38
9Subtract 38 from 47: 47 − 38 = 9.
5. Find the missing number: 45 − ____ = 33
12Subtract 33 from 45: 45 − 33 = 12.
6. Find the missing number: 46 − ____ = 26
20Subtract 26 from 46: 46 − 26 = 20.
7. Find the missing number: 52 − ____ = 24
28Subtract 24 from 52: 52 − 24 = 28.
8. Find the missing number: 60 − ____ = 29
31Subtract 29 from 60: 60 − 29 = 31.
9. Find the missing number: 39 − ____ = 25
14Subtract 25 from 39: 39 − 25 = 14.
10. Find the missing number: 35 − ____ = 12
23Subtract 12 from 35: 35 − 12 = 23.
11. Find the missing number: 36 − ____ = 29
7Subtract 29 from 36: 36 − 29 = 7.
12. Find the missing number: 54 − ____ = 29
25Subtract 29 from 54: 54 − 29 = 25.
12 questions · Seed 68 · Age guidance, not curriculum certification