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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 190 · 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 + 44 =
  2. 2.82 + 49 =
  3. 3.30 + 82 =
  4. 4.38 + 53 =
  5. 5.31 + 88 =
  6. 6.53 + 75 =
  7. 7.86 + 15 =
  8. 8.33 + 35 =
  9. 9.21 + 81 =
  10. 10.66 + 51 =
  11. 11.50 + 54 =
  12. 12.28 + 12 =
  13. 13.56 + 34 =
  14. 14.81 + 75 =
  15. 15.75 + 81 =
  16. 16.65 + 46 =
  17. 17.31 + 27 =
  18. 18.23 + 89 =
  19. 19.46 + 21 =
  20. 20.72 + 55 =
  21. 21.57 + 74 =
  22. 22.64 + 84 =
  23. 23.23 + 63 =
  24. 24.45 + 14 =
  25. 25.59 + 64 =
  26. 26.88 + 12 =
  27. 27.68 + 38 =
  28. 28.80 + 82 =
  29. 29.73 + 29 =
  30. 30.47 + 48 =
  31. 31.82 + 71 =
  32. 32.33 + 65 =
  33. 33.56 + 39 =
  34. 34.64 + 38 =
  35. 35.70 + 43 =
  36. 36.67 + 39 =
  37. 37.32 + 72 =
  38. 38.63 + 86 =
  39. 39.45 + 71 =
  40. 40.86 + 23 =

Answer key

  1. 76
  2. 131
  3. 112
  4. 91
  5. 119
  6. 128
  7. 101
  8. 68
  9. 102
  10. 117
  11. 104
  12. 40
  13. 90
  14. 156
  15. 156
  16. 111
  17. 58
  18. 112
  19. 67
  20. 127
  21. 131
  22. 148
  23. 86
  24. 59
  25. 123
  26. 100
  27. 106
  28. 162
  29. 102
  30. 95
  31. 153
  32. 98
  33. 95
  34. 102
  35. 113
  36. 106
  37. 104
  38. 149
  39. 116
  40. 109

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