Missing Number Worksheet Generator

Each equation hides one number in a box and students work out what belongs there. Great for building algebraic thinking with addition, subtraction, multiplication and division.

Missing Numbers

Name: Date:

1.11 − = 4
2.8 − = 5
3.17 − = 7
4. − 13 = 7
5.7 + = 23
6.16 − = 0
7. + 8 = 11
8. − 3 = 4
9. − 8 = 11
10. + 17 = 31
11. − 15 = 4
12.19 − = 6
13.6 + = 13
14.7 − = 4
15. + 4 = 22
16.16 + = 26
17.3 + = 11
18. − 7 = 9
19. − 4 = 7
20.19 − = 13
21. + 20 = 36
22. − 12 = 7
23.15 − = 1
24.20 − = 3

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Missing Numbers — Answer Key

Name: Date:

1.11 − 7 = 4
2.8 − 3 = 5
3.17 − 10 = 7
4.20 − 13 = 7
5.7 + 16 = 23
6.16 − 16 = 0
7.3 + 8 = 11
8.7 − 3 = 4
9.19 − 8 = 11
10.14 + 17 = 31
11.19 − 15 = 4
12.19 − 13 = 6
13.6 + 7 = 13
14.7 − 3 = 4
15.18 + 4 = 22
16.16 + 10 = 26
17.3 + 8 = 11
18.16 − 7 = 9
19.11 − 4 = 7
20.19 − 6 = 13
21.16 + 20 = 36
22.19 − 12 = 7
23.15 − 14 = 1
24.20 − 17 = 3

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Frequently asked questions

Which number is missing?: Either the first or second number in each equation, chosen at random, so students cannot guess a pattern.
Is there an answer key?: Yes. Tick “Include answer key page” and a matching key prints on its own page after the worksheet.