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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 244 · 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. 1.60 + 19 =
  2. 2.74 + 21 =
  3. 3.63 + 66 =
  4. 4.54 + 42 =
  5. 5.82 + 59 =
  6. 6.53 + 47 =
  7. 7.84 + 81 =
  8. 8.61 + 85 =
  9. 9.60 + 62 =
  10. 10.87 + 69 =
  11. 11.76 + 42 =
  12. 12.63 + 59 =
  13. 13.47 + 65 =
  14. 14.69 + 41 =
  15. 15.53 + 32 =
  16. 16.82 + 35 =
  17. 17.50 + 71 =
  18. 18.31 + 59 =
  19. 19.52 + 41 =
  20. 20.49 + 28 =
  21. 21.28 + 75 =
  22. 22.66 + 66 =
  23. 23.25 + 28 =
  24. 24.58 + 13 =
  25. 25.83 + 28 =
  26. 26.46 + 85 =
  27. 27.61 + 89 =
  28. 28.64 + 89 =
  29. 29.85 + 23 =
  30. 30.79 + 18 =
  31. 31.44 + 12 =
  32. 32.57 + 46 =
  33. 33.54 + 25 =
  34. 34.42 + 82 =
  35. 35.33 + 61 =
  36. 36.87 + 66 =
  37. 37.37 + 71 =
  38. 38.85 + 49 =
  39. 39.75 + 41 =
  40. 40.38 + 79 =

Answer key

  1. 79
  2. 95
  3. 129
  4. 96
  5. 141
  6. 100
  7. 165
  8. 146
  9. 122
  10. 156
  11. 118
  12. 122
  13. 112
  14. 110
  15. 85
  16. 117
  17. 121
  18. 90
  19. 93
  20. 77
  21. 103
  22. 132
  23. 53
  24. 71
  25. 111
  26. 131
  27. 150
  28. 153
  29. 108
  30. 97
  31. 56
  32. 103
  33. 79
  34. 124
  35. 94
  36. 153
  37. 108
  38. 134
  39. 116
  40. 117

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