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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 186 · 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. 1.32 + 66 =
  2. 2.38 + 53 =
  3. 3.52 + 87 =
  4. 4.22 + 53 =
  5. 5.39 + 34 =
  6. 6.69 + 31 =
  7. 7.26 + 85 =
  8. 8.71 + 34 =
  9. 9.83 + 56 =
  10. 10.81 + 63 =
  11. 11.79 + 51 =
  12. 12.71 + 84 =
  13. 13.59 + 31 =
  14. 14.86 + 31 =
  15. 15.53 + 28 =
  16. 16.54 + 31 =
  17. 17.26 + 29 =
  18. 18.22 + 43 =
  19. 19.62 + 53 =
  20. 20.39 + 71 =
  21. 21.37 + 48 =
  22. 22.51 + 59 =
  23. 23.27 + 81 =
  24. 24.47 + 81 =
  25. 25.74 + 41 =
  26. 26.49 + 75 =
  27. 27.30 + 74 =
  28. 28.43 + 49 =
  29. 29.47 + 46 =
  30. 30.56 + 61 =
  31. 31.39 + 43 =
  32. 32.73 + 59 =
  33. 33.77 + 29 =
  34. 34.75 + 13 =
  35. 35.22 + 82 =
  36. 36.69 + 32 =
  37. 37.43 + 35 =
  38. 38.76 + 84 =
  39. 39.78 + 55 =
  40. 40.76 + 13 =

Answer key

  1. 98
  2. 91
  3. 139
  4. 75
  5. 73
  6. 100
  7. 111
  8. 105
  9. 139
  10. 144
  11. 130
  12. 155
  13. 90
  14. 117
  15. 81
  16. 85
  17. 55
  18. 65
  19. 115
  20. 110
  21. 85
  22. 110
  23. 108
  24. 128
  25. 115
  26. 124
  27. 104
  28. 92
  29. 93
  30. 117
  31. 82
  32. 132
  33. 106
  34. 88
  35. 104
  36. 101
  37. 78
  38. 160
  39. 133
  40. 89

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