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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 797 · 40 questions
TalentJR

How to do it in your head (Tens first): Keep the first number as it is. Add the tens of the second number. Add the ones.

NameDateTime takenScore ___ / 40
  1. 1.85 + 31 =
  2. 2.86 + 35 =
  3. 3.67 + 76 =
  4. 4.42 + 41 =
  5. 5.34 + 76 =
  6. 6.39 + 42 =
  7. 7.33 + 15 =
  8. 8.32 + 88 =
  9. 9.34 + 24 =
  10. 10.34 + 19 =
  11. 11.65 + 83 =
  12. 12.39 + 71 =
  13. 13.38 + 29 =
  14. 14.26 + 13 =
  15. 15.88 + 43 =
  16. 16.25 + 16 =
  17. 17.28 + 44 =
  18. 18.51 + 88 =
  19. 19.29 + 81 =
  20. 20.31 + 71 =
  21. 21.44 + 31 =
  22. 22.72 + 16 =
  23. 23.73 + 33 =
  24. 24.25 + 84 =
  25. 25.37 + 13 =
  26. 26.85 + 19 =
  27. 27.64 + 34 =
  28. 28.87 + 81 =
  29. 29.41 + 82 =
  30. 30.86 + 16 =
  31. 31.29 + 48 =
  32. 32.47 + 65 =
  33. 33.65 + 31 =
  34. 34.70 + 51 =
  35. 35.70 + 55 =
  36. 36.25 + 31 =
  37. 37.38 + 62 =
  38. 38.32 + 81 =
  39. 39.78 + 43 =
  40. 40.25 + 19 =

Answer key

  1. 116
  2. 121
  3. 143
  4. 83
  5. 110
  6. 81
  7. 48
  8. 120
  9. 58
  10. 53
  11. 148
  12. 110
  13. 67
  14. 39
  15. 131
  16. 41
  17. 72
  18. 139
  19. 110
  20. 102
  21. 75
  22. 88
  23. 106
  24. 109
  25. 50
  26. 104
  27. 98
  28. 168
  29. 123
  30. 102
  31. 77
  32. 112
  33. 96
  34. 121
  35. 125
  36. 56
  37. 100
  38. 113
  39. 121
  40. 44

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