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1st grade addition within 20 worksheets

Three free printable sheets of 20 problems, each with an answer key. They practice adding two numbers with a sum up to 20. Press print, or save as a PDF from the print window. No sign-up, no email.

🎮 Practice it as a game
Name: ____________________Date: ____________Score: ____ / 20

1st grade addition within 20: worksheet 1

  1. 7 + 2 = ____
  2. 5 + 5 = ____
  3. 7 + 8 = ____
  4. 8 + 6 = ____
  5. 10 + 10 = ____
  6. 10 + 8 = ____
  7. 7 + 4 = ____
  8. 4 + 3 = ____
  9. 6 + 3 = ____
  10. 3 + 2 = ____
  11. 6 + 10 = ____
  12. 9 + 7 = ____
  13. 3 + 8 = ____
  14. 12 + 4 = ____
  15. 2 + 11 = ____
  16. 8 + 5 = ____
  17. 4 + 2 = ____
  18. 3 + 10 = ____
  19. 4 + 7 = ____
  20. 8 + 2 = ____
Name: ____________________Date: ____________Score: ____ / 20

1st grade addition within 20: worksheet 2

  1. 4 + 4 = ____
  2. 8 + 7 = ____
  3. 11 + 4 = ____
  4. 7 + 10 = ____
  5. 11 + 6 = ____
  6. 3 + 6 = ____
  7. 4 + 5 = ____
  8. 5 + 12 = ____
  9. 5 + 5 = ____
  10. 2 + 4 = ____
  11. 4 + 2 = ____
  12. 6 + 3 = ____
  13. 2 + 3 = ____
  14. 5 + 2 = ____
  15. 3 + 12 = ____
  16. 11 + 9 = ____
  17. 8 + 5 = ____
  18. 6 + 12 = ____
  19. 10 + 4 = ____
  20. 5 + 8 = ____
Name: ____________________Date: ____________Score: ____ / 20

1st grade addition within 20: worksheet 3

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

Answer keys

Worksheet 1

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

Worksheet 2

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

Worksheet 3

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

More worksheets

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