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
- 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
- 25. + 6 = 15
- 26. − 5 = 5
- 27. + 9 = 16
- 28.20 − = 12
- 29. − 5 = 8
- 30.14 − = 12
- 31.8 − = 5
- 32.2 + = 16
- 33. + 13 = 21
- 34.20 − = 3
- 35.19 − = 10
- 36.14 + = 32
- 37.20 + = 30
- 38. + 2 = 12
- 39. + 14 = 25
Missing Numbers — Answer Key
- 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
- 25.9 + 6 = 15
- 26.10 − 5 = 5
- 27.7 + 9 = 16
- 28.20 − 8 = 12
- 29.13 − 5 = 8
- 30.14 − 2 = 12
- 31.8 − 3 = 5
- 32.2 + 14 = 16
- 33.8 + 13 = 21
- 34.20 − 17 = 3
- 35.19 − 9 = 10
- 36.14 + 18 = 32
- 37.20 + 10 = 30
- 38.10 + 2 = 12
- 39.11 + 14 = 25
At a glance
The missing number worksheet generator makes a fresh printable practice sheet in seconds. Solve for the missing addend, factor or divisor in each equation. Every time you change a setting, the page rebuilds instantly, so you can print a different sheet for every group or lesson. It is designed for clean printing on US Letter or A4 paper with half-inch margins.
How the missing number worksheet generator works
This missing number worksheet generator assembles a complete printable page in the browser, and nothing is saved or repeated between visits.
Set the difficulty, how many problems you want and how many columns they sit in. The preview updates as you change each setting, so the page you see is exactly the page that prints.
The answer key is optional; when it is on, it prints on a separate page in the same order as the problems. Both US Letter and A4 are supported, and the layout is locked to a safe printable area so nothing is cut off.
Ways to use missing number worksheets in class and at home
Solve for the missing addend, factor or divisor in each equation. Because the problems regenerate, the same missing number worksheet generator covers a warm-up on Monday, a homework sheet on Wednesday and a quick check on Friday without any of them repeating.
Keep the problem count low for a timed drill and raise it for a review packet. Printing several sheets at different difficulty levels is the quickest way to differentiate without preparing separate lessons.
What to look for when marking
Watch for students who count on their fingers for every problem — that usually means the underlying facts still need daily practice rather than harder numbers.
Marking against the printed answer key is quicker than working the problems again, and it lets students self-check before they hand anything in.
Created by Tim van de Vall
B.S. in Computational Media, Georgia Institute of Technology. Each missing number worksheet generator is designed for clean printing on US Letter and A4 paper.
Updated 2026-08-14About the authorEditorial policy
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Missing number worksheet generator FAQ
- 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.