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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 191 · 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. 1.62 + 86 =
  2. 2.56 + 78 =
  3. 3.88 + 49 =
  4. 4.57 + 76 =
  5. 5.44 + 34 =
  6. 6.51 + 44 =
  7. 7.81 + 77 =
  8. 8.51 + 69 =
  9. 9.40 + 51 =
  10. 10.25 + 48 =
  11. 11.57 + 44 =
  12. 12.60 + 81 =
  13. 13.89 + 83 =
  14. 14.42 + 73 =
  15. 15.23 + 25 =
  16. 16.67 + 78 =
  17. 17.32 + 73 =
  18. 18.76 + 52 =
  19. 19.25 + 13 =
  20. 20.50 + 44 =
  21. 21.37 + 72 =
  22. 22.22 + 15 =
  23. 23.48 + 54 =
  24. 24.65 + 17 =
  25. 25.83 + 75 =
  26. 26.69 + 81 =
  27. 27.28 + 64 =
  28. 28.52 + 27 =
  29. 29.24 + 86 =
  30. 30.88 + 41 =
  31. 31.28 + 61 =
  32. 32.41 + 71 =
  33. 33.33 + 85 =
  34. 34.58 + 45 =
  35. 35.66 + 52 =
  36. 36.41 + 43 =
  37. 37.52 + 68 =
  38. 38.28 + 26 =
  39. 39.51 + 33 =
  40. 40.77 + 82 =

Answer key

  1. 148
  2. 134
  3. 137
  4. 133
  5. 78
  6. 95
  7. 158
  8. 120
  9. 91
  10. 73
  11. 101
  12. 141
  13. 172
  14. 115
  15. 48
  16. 145
  17. 105
  18. 128
  19. 38
  20. 94
  21. 109
  22. 37
  23. 102
  24. 82
  25. 158
  26. 150
  27. 92
  28. 79
  29. 110
  30. 129
  31. 89
  32. 112
  33. 118
  34. 103
  35. 118
  36. 84
  37. 120
  38. 54
  39. 84
  40. 159

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