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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 409 · 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. 1.41 + 61 =
  2. 2.54 + 75 =
  3. 3.30 + 86 =
  4. 4.43 + 38 =
  5. 5.82 + 27 =
  6. 6.28 + 18 =
  7. 7.41 + 49 =
  8. 8.85 + 27 =
  9. 9.47 + 19 =
  10. 10.62 + 56 =
  11. 11.75 + 22 =
  12. 12.49 + 28 =
  13. 13.53 + 21 =
  14. 14.37 + 22 =
  15. 15.81 + 81 =
  16. 16.89 + 81 =
  17. 17.79 + 88 =
  18. 18.37 + 19 =
  19. 19.45 + 24 =
  20. 20.68 + 75 =
  21. 21.46 + 71 =
  22. 22.24 + 54 =
  23. 23.88 + 26 =
  24. 24.47 + 25 =
  25. 25.44 + 51 =
  26. 26.64 + 37 =
  27. 27.25 + 13 =
  28. 28.22 + 75 =
  29. 29.38 + 82 =
  30. 30.62 + 45 =
  31. 31.71 + 19 =
  32. 32.46 + 86 =
  33. 33.84 + 21 =
  34. 34.87 + 71 =
  35. 35.23 + 86 =
  36. 36.24 + 21 =
  37. 37.28 + 41 =
  38. 38.32 + 51 =
  39. 39.36 + 62 =
  40. 40.41 + 28 =

Answer key

  1. 102
  2. 129
  3. 116
  4. 81
  5. 109
  6. 46
  7. 90
  8. 112
  9. 66
  10. 118
  11. 97
  12. 77
  13. 74
  14. 59
  15. 162
  16. 170
  17. 167
  18. 56
  19. 69
  20. 143
  21. 117
  22. 78
  23. 114
  24. 72
  25. 95
  26. 101
  27. 38
  28. 97
  29. 120
  30. 107
  31. 90
  32. 132
  33. 105
  34. 158
  35. 109
  36. 45
  37. 69
  38. 83
  39. 98
  40. 69

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