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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 742 · 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. 1.76 + 82 =
  2. 2.72 + 71 =
  3. 3.76 + 19 =
  4. 4.57 + 12 =
  5. 5.58 + 34 =
  6. 6.85 + 26 =
  7. 7.44 + 44 =
  8. 8.26 + 51 =
  9. 9.40 + 58 =
  10. 10.24 + 17 =
  11. 11.61 + 61 =
  12. 12.40 + 51 =
  13. 13.40 + 19 =
  14. 14.85 + 41 =
  15. 15.38 + 29 =
  16. 16.83 + 84 =
  17. 17.38 + 75 =
  18. 18.59 + 85 =
  19. 19.87 + 28 =
  20. 20.54 + 66 =
  21. 21.24 + 71 =
  22. 22.74 + 77 =
  23. 23.79 + 23 =
  24. 24.58 + 26 =
  25. 25.42 + 81 =
  26. 26.48 + 81 =
  27. 27.78 + 21 =
  28. 28.88 + 54 =
  29. 29.50 + 79 =
  30. 30.69 + 51 =
  31. 31.72 + 89 =
  32. 32.25 + 39 =
  33. 33.64 + 79 =
  34. 34.24 + 83 =
  35. 35.30 + 13 =
  36. 36.72 + 68 =
  37. 37.24 + 41 =
  38. 38.89 + 29 =
  39. 39.54 + 26 =
  40. 40.46 + 32 =

Answer key

  1. 158
  2. 143
  3. 95
  4. 69
  5. 92
  6. 111
  7. 88
  8. 77
  9. 98
  10. 41
  11. 122
  12. 91
  13. 59
  14. 126
  15. 67
  16. 167
  17. 113
  18. 144
  19. 115
  20. 120
  21. 95
  22. 151
  23. 102
  24. 84
  25. 123
  26. 129
  27. 99
  28. 142
  29. 129
  30. 120
  31. 161
  32. 64
  33. 143
  34. 107
  35. 43
  36. 140
  37. 65
  38. 118
  39. 80
  40. 78

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