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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 6 · 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. 1.33 + 61 =
  2. 2.88 + 82 =
  3. 3.79 + 53 =
  4. 4.35 + 22 =
  5. 5.46 + 61 =
  6. 6.67 + 38 =
  7. 7.36 + 39 =
  8. 8.37 + 48 =
  9. 9.64 + 83 =
  10. 10.43 + 13 =
  11. 11.56 + 41 =
  12. 12.21 + 76 =
  13. 13.32 + 65 =
  14. 14.81 + 27 =
  15. 15.43 + 61 =
  16. 16.49 + 29 =
  17. 17.29 + 37 =
  18. 18.67 + 51 =
  19. 19.75 + 86 =
  20. 20.27 + 46 =
  21. 21.42 + 36 =
  22. 22.33 + 21 =
  23. 23.37 + 68 =
  24. 24.69 + 81 =
  25. 25.85 + 61 =
  26. 26.81 + 49 =
  27. 27.59 + 26 =
  28. 28.50 + 61 =
  29. 29.68 + 71 =
  30. 30.31 + 21 =
  31. 31.41 + 31 =
  32. 32.29 + 88 =
  33. 33.29 + 36 =
  34. 34.31 + 77 =
  35. 35.33 + 64 =
  36. 36.78 + 72 =
  37. 37.69 + 27 =
  38. 38.80 + 79 =
  39. 39.70 + 82 =
  40. 40.37 + 44 =

Answer key

  1. 94
  2. 170
  3. 132
  4. 57
  5. 107
  6. 105
  7. 75
  8. 85
  9. 147
  10. 56
  11. 97
  12. 97
  13. 97
  14. 108
  15. 104
  16. 78
  17. 66
  18. 118
  19. 161
  20. 73
  21. 78
  22. 54
  23. 105
  24. 150
  25. 146
  26. 130
  27. 85
  28. 111
  29. 139
  30. 52
  31. 72
  32. 117
  33. 65
  34. 108
  35. 97
  36. 150
  37. 96
  38. 159
  39. 152
  40. 81

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