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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: 45 − ____ = 26
2. Find the missing number: 30 − ____ = 16
3. Find the missing number: 26 − ____ = 17
4. Find the missing number: 50 − ____ = 23
5. Find the missing number: 54 − ____ = 27
6. Find the missing number: 34 − ____ = 10
7. Find the missing number: 59 − ____ = 26
8. Find the missing number: 24 − ____ = 8
9. Find the missing number: 47 − ____ = 37
10. Find the missing number: 26 − ____ = 4
11. Find the missing number: 18 − ____ = 5
12. Find the missing number: 25 − ____ = 16
12 questions · Seed 86 · 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: 45 − ____ = 26
19Subtract 26 from 45: 45 − 26 = 19.
2. Find the missing number: 30 − ____ = 16
14Subtract 16 from 30: 30 − 16 = 14.
3. Find the missing number: 26 − ____ = 17
9Subtract 17 from 26: 26 − 17 = 9.
4. Find the missing number: 50 − ____ = 23
27Subtract 23 from 50: 50 − 23 = 27.
5. Find the missing number: 54 − ____ = 27
27Subtract 27 from 54: 54 − 27 = 27.
6. Find the missing number: 34 − ____ = 10
24Subtract 10 from 34: 34 − 10 = 24.
7. Find the missing number: 59 − ____ = 26
33Subtract 26 from 59: 59 − 26 = 33.
8. Find the missing number: 24 − ____ = 8
16Subtract 8 from 24: 24 − 8 = 16.
9. Find the missing number: 47 − ____ = 37
10Subtract 37 from 47: 47 − 37 = 10.
10. Find the missing number: 26 − ____ = 4
22Subtract 4 from 26: 26 − 4 = 22.
11. Find the missing number: 18 − ____ = 5
13Subtract 5 from 18: 18 − 5 = 13.
12. Find the missing number: 25 − ____ = 16
9Subtract 16 from 25: 25 − 16 = 9.
12 questions · Seed 86 · 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: 45 − ____ = 26
2. Find the missing number: 30 − ____ = 16
3. Find the missing number: 26 − ____ = 17
4. Find the missing number: 50 − ____ = 23
5. Find the missing number: 54 − ____ = 27
6. Find the missing number: 34 − ____ = 10
7. Find the missing number: 59 − ____ = 26
8. Find the missing number: 24 − ____ = 8
9. Find the missing number: 47 − ____ = 37
10. Find the missing number: 26 − ____ = 4
11. Find the missing number: 18 − ____ = 5
12. Find the missing number: 25 − ____ = 16
12 questions · Seed 86 · 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: 45 − ____ = 26
19Subtract 26 from 45: 45 − 26 = 19.
2. Find the missing number: 30 − ____ = 16
14Subtract 16 from 30: 30 − 16 = 14.
3. Find the missing number: 26 − ____ = 17
9Subtract 17 from 26: 26 − 17 = 9.
4. Find the missing number: 50 − ____ = 23
27Subtract 23 from 50: 50 − 23 = 27.
5. Find the missing number: 54 − ____ = 27
27Subtract 27 from 54: 54 − 27 = 27.
6. Find the missing number: 34 − ____ = 10
24Subtract 10 from 34: 34 − 10 = 24.
7. Find the missing number: 59 − ____ = 26
33Subtract 26 from 59: 59 − 26 = 33.
8. Find the missing number: 24 − ____ = 8
16Subtract 8 from 24: 24 − 8 = 16.
9. Find the missing number: 47 − ____ = 37
10Subtract 37 from 47: 47 − 37 = 10.
10. Find the missing number: 26 − ____ = 4
22Subtract 4 from 26: 26 − 4 = 22.
11. Find the missing number: 18 − ____ = 5
13Subtract 5 from 18: 18 − 5 = 13.
12. Find the missing number: 25 − ____ = 16
9Subtract 16 from 25: 25 − 16 = 9.
12 questions · Seed 86 · Age guidance, not curriculum certification