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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 387 · 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. 1.75 + 37 =
  2. 2.55 + 61 =
  3. 3.47 + 56 =
  4. 4.58 + 76 =
  5. 5.30 + 62 =
  6. 6.89 + 17 =
  7. 7.60 + 86 =
  8. 8.36 + 69 =
  9. 9.79 + 55 =
  10. 10.80 + 49 =
  11. 11.74 + 31 =
  12. 12.29 + 24 =
  13. 13.81 + 64 =
  14. 14.21 + 54 =
  15. 15.36 + 22 =
  16. 16.38 + 18 =
  17. 17.60 + 73 =
  18. 18.24 + 76 =
  19. 19.60 + 53 =
  20. 20.61 + 65 =
  21. 21.68 + 12 =
  22. 22.21 + 23 =
  23. 23.83 + 81 =
  24. 24.51 + 57 =
  25. 25.87 + 52 =
  26. 26.34 + 24 =
  27. 27.84 + 74 =
  28. 28.49 + 23 =
  29. 29.88 + 26 =
  30. 30.39 + 68 =
  31. 31.36 + 17 =
  32. 32.37 + 64 =
  33. 33.59 + 81 =
  34. 34.82 + 81 =
  35. 35.31 + 55 =
  36. 36.77 + 51 =
  37. 37.37 + 23 =
  38. 38.86 + 24 =
  39. 39.67 + 38 =
  40. 40.26 + 67 =

Answer key

  1. 112
  2. 116
  3. 103
  4. 134
  5. 92
  6. 106
  7. 146
  8. 105
  9. 134
  10. 129
  11. 105
  12. 53
  13. 145
  14. 75
  15. 58
  16. 56
  17. 133
  18. 100
  19. 113
  20. 126
  21. 80
  22. 44
  23. 164
  24. 108
  25. 139
  26. 58
  27. 158
  28. 72
  29. 114
  30. 107
  31. 53
  32. 101
  33. 140
  34. 163
  35. 86
  36. 128
  37. 60
  38. 110
  39. 105
  40. 93

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