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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 695 · 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. 1.86 + 36 =
  2. 2.24 + 66 =
  3. 3.36 + 42 =
  4. 4.73 + 88 =
  5. 5.22 + 59 =
  6. 6.68 + 23 =
  7. 7.60 + 82 =
  8. 8.75 + 27 =
  9. 9.82 + 13 =
  10. 10.49 + 87 =
  11. 11.32 + 53 =
  12. 12.85 + 86 =
  13. 13.40 + 44 =
  14. 14.76 + 34 =
  15. 15.77 + 28 =
  16. 16.59 + 78 =
  17. 17.76 + 36 =
  18. 18.38 + 21 =
  19. 19.27 + 69 =
  20. 20.52 + 48 =
  21. 21.22 + 39 =
  22. 22.58 + 23 =
  23. 23.23 + 17 =
  24. 24.87 + 63 =
  25. 25.46 + 82 =
  26. 26.39 + 87 =
  27. 27.31 + 87 =
  28. 28.86 + 59 =
  29. 29.61 + 59 =
  30. 30.39 + 28 =
  31. 31.89 + 62 =
  32. 32.81 + 85 =
  33. 33.36 + 47 =
  34. 34.64 + 24 =
  35. 35.22 + 75 =
  36. 36.57 + 56 =
  37. 37.88 + 74 =
  38. 38.21 + 43 =
  39. 39.33 + 51 =
  40. 40.52 + 83 =

Answer key

  1. 122
  2. 90
  3. 78
  4. 161
  5. 81
  6. 91
  7. 142
  8. 102
  9. 95
  10. 136
  11. 85
  12. 171
  13. 84
  14. 110
  15. 105
  16. 137
  17. 112
  18. 59
  19. 96
  20. 100
  21. 61
  22. 81
  23. 40
  24. 150
  25. 128
  26. 126
  27. 118
  28. 145
  29. 120
  30. 67
  31. 151
  32. 166
  33. 83
  34. 88
  35. 97
  36. 113
  37. 162
  38. 64
  39. 84
  40. 135

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