Printable addition worksheets within 20 – grade 4 (hard) worksheet for kids. Free PDF download and answer key included.
1. 8 + 7 = ___
2. 15 + 6 = ___
3. 9 + 12 = ___
4. 14 + 8 = ___
5. 7 + 16 = ___
6. 18 + 3 = ___
7. 11 + 9 = ___
8. 13 + 7 = ___
9. 16 + 5 = ___
10. 12 + 9 = ___
11. 17 + 4 = ___
12. 19 + 2 = ___
13. 14 + 7 = ___
14. 8 + 15 = ___
15. 11 + 8 = ___