Addition Within 100 Worksheet (Free Printable)

A free printable addition within 100 worksheet with 30 questions and an answer key, for Year 3 and Year 4. Print it, make a new set of questions, or practise online with Addition Adventure.

Addition within 100Name: ____________________Date: ____________Score: ____ / 30
  1. 36 + 13 =
  2. 24 + 39 =
  3. 17 + 27 =
  4. 43 + 36 =
  5. 52 + 38 =
  6. 69 + 29 =
  7. 55 + 44 =
  8. 24 + 55 =
  9. 73 + 11 =
  10. 33 + 21 =
  11. 13 + 58 =
  12. 23 + 35 =
  13. 16 + 19 =
  14. 45 + 44 =
  15. 27 + 27 =
  16. 19 + 50 =
  17. 66 + 19 =
  18. 41 + 16 =
  19. 34 + 24 =
  20. 13 + 25 =
  21. 17 + 32 =
  22. 24 + 32 =
  23. 43 + 38 =
  24. 24 + 42 =
  25. 34 + 46 =
  26. 70 + 21 =
  27. 14 + 17 =
  28. 39 + 38 =
  29. 30 + 15 =
  30. 73 + 22 =

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Tip

Add the tens, then the ones: 46 + 37 = 70 + 13 = 83.

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