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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 52 · 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. 1.87 + 37 =
  2. 2.60 + 34 =
  3. 3.65 + 81 =
  4. 4.83 + 15 =
  5. 5.43 + 69 =
  6. 6.83 + 86 =
  7. 7.76 + 15 =
  8. 8.38 + 15 =
  9. 9.66 + 75 =
  10. 10.51 + 29 =
  11. 11.29 + 57 =
  12. 12.84 + 83 =
  13. 13.74 + 55 =
  14. 14.30 + 59 =
  15. 15.86 + 77 =
  16. 16.66 + 19 =
  17. 17.28 + 76 =
  18. 18.88 + 54 =
  19. 19.40 + 57 =
  20. 20.53 + 22 =
  21. 21.36 + 75 =
  22. 22.76 + 64 =
  23. 23.52 + 43 =
  24. 24.38 + 25 =
  25. 25.39 + 21 =
  26. 26.27 + 79 =
  27. 27.82 + 58 =
  28. 28.44 + 49 =
  29. 29.60 + 31 =
  30. 30.60 + 82 =
  31. 31.51 + 31 =
  32. 32.47 + 41 =
  33. 33.88 + 18 =
  34. 34.89 + 23 =
  35. 35.62 + 25 =
  36. 36.74 + 13 =
  37. 37.30 + 68 =
  38. 38.27 + 71 =
  39. 39.36 + 22 =
  40. 40.73 + 77 =

Answer key

  1. 124
  2. 94
  3. 146
  4. 98
  5. 112
  6. 169
  7. 91
  8. 53
  9. 141
  10. 80
  11. 86
  12. 167
  13. 129
  14. 89
  15. 163
  16. 85
  17. 104
  18. 142
  19. 97
  20. 75
  21. 111
  22. 140
  23. 95
  24. 63
  25. 60
  26. 106
  27. 140
  28. 93
  29. 91
  30. 142
  31. 82
  32. 88
  33. 106
  34. 112
  35. 87
  36. 87
  37. 98
  38. 98
  39. 58
  40. 150

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