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1st Grade Addition Worksheets

This free printable worksheet practices adding within 20. It has 24 problems, and the answer key is on its own page when you print, so you can check work afterward.

Tip: Line up the digits by place value before adding, and regroup when a column adds up to 10 or more.

Name: ____________________Date: ____________

1st Grade Addition

  1. 13 + 4 = ____
  2. 17 + 2 = ____
  3. 14 + 2 = ____
  4. 9 + 9 = ____
  5. 8 + 0 = ____
  6. 16 + 4 = ____
  7. 7 + 8 = ____
  8. 15 + 5 = ____
  9. 4 + 11 = ____
  10. 2 + 15 = ____
  11. 7 + 5 = ____
  12. 14 + 3 = ____
  13. 18 + 0 = ____
  14. 3 + 6 = ____
  15. 8 + 2 = ____
  16. 14 + 0 = ____
  17. 8 + 5 = ____
  18. 3 + 17 = ____
  19. 5 + 13 = ____
  20. 4 + 8 = ____
  21. 1 + 4 = ____
  22. 8 + 12 = ____
  23. 11 + 1 = ____
  24. 0 + 17 = ____

Answer Key: 1st Grade Addition

  1. 17
  2. 19
  3. 16
  4. 18
  5. 8
  6. 20
  7. 15
  8. 20
  9. 15
  10. 17
  11. 12
  12. 17
  13. 18
  14. 9
  15. 10
  16. 14
  17. 13
  18. 20
  19. 18
  20. 12
  21. 5
  22. 20
  23. 12
  24. 17

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More 1st grade worksheets: 1st Grade Subtraction · 1st Grade Missing Numbers · 1st Grade Comparing Numbers · 1st Grade Place Value · 1st Grade Skip Counting · 1st Grade Word Problems