Thinkabara

Addition Within 20

1st Grade Common Core 1.OA.C.6

Practice adding numbers up to 20. Count on from the bigger number, or make a ten!

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Addition Within 20

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