Back to worksheetsMathsAges 10-12
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: 28 − ____ = 21
2. Find the missing number: 34 − ____ = 19
3. Find the missing number: 49 − ____ = 14
4. Find the missing number: 56 − ____ = 25
5. Find the missing number: 52 − ____ = 17
6. Find the missing number: 37 − ____ = 9
7. Find the missing number: 49 − ____ = 19
8. Find the missing number: 34 − ____ = 24
9. Find the missing number: 27 − ____ = 5
10. Find the missing number: 37 − ____ = 34
11. Find the missing number: 68 − ____ = 33
12. Find the missing number: 9 − ____ = 6
12 questions · Seed 104747 · 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: 28 − ____ = 21
7Subtract 21 from 28: 28 − 21 = 7.
2. Find the missing number: 34 − ____ = 19
15Subtract 19 from 34: 34 − 19 = 15.
3. Find the missing number: 49 − ____ = 14
35Subtract 14 from 49: 49 − 14 = 35.
4. Find the missing number: 56 − ____ = 25
31Subtract 25 from 56: 56 − 25 = 31.
5. Find the missing number: 52 − ____ = 17
35Subtract 17 from 52: 52 − 17 = 35.
6. Find the missing number: 37 − ____ = 9
28Subtract 9 from 37: 37 − 9 = 28.
7. Find the missing number: 49 − ____ = 19
30Subtract 19 from 49: 49 − 19 = 30.
8. Find the missing number: 34 − ____ = 24
10Subtract 24 from 34: 34 − 24 = 10.
9. Find the missing number: 27 − ____ = 5
22Subtract 5 from 27: 27 − 5 = 22.
10. Find the missing number: 37 − ____ = 34
3Subtract 34 from 37: 37 − 34 = 3.
11. Find the missing number: 68 − ____ = 33
35Subtract 33 from 68: 68 − 33 = 35.
12. Find the missing number: 9 − ____ = 6
3Subtract 6 from 9: 9 − 6 = 3.
12 questions · Seed 104747 · 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: 28 − ____ = 21
2. Find the missing number: 34 − ____ = 19
3. Find the missing number: 49 − ____ = 14
4. Find the missing number: 56 − ____ = 25
5. Find the missing number: 52 − ____ = 17
6. Find the missing number: 37 − ____ = 9
7. Find the missing number: 49 − ____ = 19
8. Find the missing number: 34 − ____ = 24
9. Find the missing number: 27 − ____ = 5
10. Find the missing number: 37 − ____ = 34
11. Find the missing number: 68 − ____ = 33
12. Find the missing number: 9 − ____ = 6
12 questions · Seed 104747 · 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: 28 − ____ = 21
7Subtract 21 from 28: 28 − 21 = 7.
2. Find the missing number: 34 − ____ = 19
15Subtract 19 from 34: 34 − 19 = 15.
3. Find the missing number: 49 − ____ = 14
35Subtract 14 from 49: 49 − 14 = 35.
4. Find the missing number: 56 − ____ = 25
31Subtract 25 from 56: 56 − 25 = 31.
5. Find the missing number: 52 − ____ = 17
35Subtract 17 from 52: 52 − 17 = 35.
6. Find the missing number: 37 − ____ = 9
28Subtract 9 from 37: 37 − 9 = 28.
7. Find the missing number: 49 − ____ = 19
30Subtract 19 from 49: 49 − 19 = 30.
8. Find the missing number: 34 − ____ = 24
10Subtract 24 from 34: 34 − 24 = 10.
9. Find the missing number: 27 − ____ = 5
22Subtract 5 from 27: 27 − 5 = 22.
10. Find the missing number: 37 − ____ = 34
3Subtract 34 from 37: 37 − 34 = 3.
11. Find the missing number: 68 − ____ = 33
35Subtract 33 from 68: 68 − 33 = 35.
12. Find the missing number: 9 − ____ = 6
3Subtract 6 from 9: 9 − 6 = 3.
12 questions · Seed 104747 · Age guidance, not curriculum certification