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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 294 · 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. 1.73 + 61 =
  2. 2.21 + 45 =
  3. 3.25 + 77 =
  4. 4.37 + 56 =
  5. 5.40 + 75 =
  6. 6.48 + 14 =
  7. 7.40 + 61 =
  8. 8.42 + 81 =
  9. 9.63 + 47 =
  10. 10.71 + 21 =
  11. 11.37 + 23 =
  12. 12.31 + 84 =
  13. 13.49 + 67 =
  14. 14.60 + 63 =
  15. 15.50 + 79 =
  16. 16.66 + 77 =
  17. 17.36 + 56 =
  18. 18.36 + 46 =
  19. 19.32 + 34 =
  20. 20.46 + 16 =
  21. 21.49 + 76 =
  22. 22.83 + 34 =
  23. 23.87 + 12 =
  24. 24.72 + 22 =
  25. 25.80 + 31 =
  26. 26.40 + 26 =
  27. 27.81 + 81 =
  28. 28.26 + 15 =
  29. 29.52 + 41 =
  30. 30.48 + 25 =
  31. 31.79 + 64 =
  32. 32.85 + 58 =
  33. 33.57 + 73 =
  34. 34.27 + 31 =
  35. 35.35 + 76 =
  36. 36.58 + 53 =
  37. 37.49 + 65 =
  38. 38.52 + 63 =
  39. 39.68 + 25 =
  40. 40.47 + 76 =

Answer key

  1. 134
  2. 66
  3. 102
  4. 93
  5. 115
  6. 62
  7. 101
  8. 123
  9. 110
  10. 92
  11. 60
  12. 115
  13. 116
  14. 123
  15. 129
  16. 143
  17. 92
  18. 82
  19. 66
  20. 62
  21. 125
  22. 117
  23. 99
  24. 94
  25. 111
  26. 66
  27. 162
  28. 41
  29. 93
  30. 73
  31. 143
  32. 143
  33. 130
  34. 58
  35. 111
  36. 111
  37. 114
  38. 115
  39. 93
  40. 123

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