Generate another version
mathit.app
mathit.app

Subtraction Worksheet

1st Graders · subtraction within 20 (no negative answers) · 30 problems

Name:   Date:  
1. 5 - 5 =  
2. 9 - 5 =  
3. 16 - 16 =  
4. 1 - 1 =  
5. 18 - 12 =  
6. 12 - 9 =  
7. 3 - 1 =  
8. 6 - 6 =  
9. 2 - 2 =  
10. 8 - 4 =  
11. 3 - 2 =  
12. 15 - 1 =  
13. 13 - 13 =  
14. 6 - 4 =  
15. 18 - 14 =  
16. 6 - 5 =  
17. 8 - 8 =  
18. 10 - 2 =  
19. 16 - 9 =  
20. 9 - 7 =  
21. 20 - 2 =  
22. 3 - 3 =  
23. 17 - 9 =  
24. 5 - 3 =  
25. 11 - 7 =  
26. 7 - 2 =  
27. 5 - 2 =  
28. 18 - 10 =  
29. 14 - 11 =  
30. 4 - 1 =  
mathit.app

Answer Key — Subtraction for 1st Graders

1.5 - 5 = 0
2.9 - 5 = 4
3.16 - 16 = 0
4.1 - 1 = 0
5.18 - 12 = 6
6.12 - 9 = 3
7.3 - 1 = 2
8.6 - 6 = 0
9.2 - 2 = 0
10.8 - 4 = 4
11.3 - 2 = 1
12.15 - 1 = 14
13.13 - 13 = 0
14.6 - 4 = 2
15.18 - 14 = 4
16.6 - 5 = 1
17.8 - 8 = 0
18.10 - 2 = 8
19.16 - 9 = 7
20.9 - 7 = 2
21.20 - 2 = 18
22.3 - 3 = 0
23.17 - 9 = 8
24.5 - 3 = 2
25.11 - 7 = 4
26.7 - 2 = 5
27.5 - 2 = 3
28.18 - 10 = 8
29.14 - 11 = 3
30.4 - 1 = 3

About this subtraction worksheet for 1st grade

This is a free, printable subtraction worksheet aimed at 1st grade students. It contains 30 subtraction within 20 (no negative answers) problems and a matching answer key on the second page, so you can grade it in seconds. There is no signup, no watermark, and no cost — just press Print / Save as PDF and hand it out.

Need a different set? Every problem is generated fresh, so you can print a new version for each student or each day of the week. Use the “Generate another version” link to get a brand-new sheet with the same difficulty.

Practice these skills as a game — MathIt, a multiplayer math game for kids, students, and families.