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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 692 · 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. 1.34 + 77 =
  2. 2.66 + 61 =
  3. 3.67 + 53 =
  4. 4.29 + 86 =
  5. 5.22 + 41 =
  6. 6.65 + 37 =
  7. 7.28 + 81 =
  8. 8.86 + 59 =
  9. 9.44 + 43 =
  10. 10.53 + 17 =
  11. 11.43 + 19 =
  12. 12.38 + 57 =
  13. 13.82 + 14 =
  14. 14.30 + 78 =
  15. 15.43 + 65 =
  16. 16.76 + 38 =
  17. 17.87 + 29 =
  18. 18.36 + 82 =
  19. 19.24 + 37 =
  20. 20.69 + 63 =
  21. 21.48 + 84 =
  22. 22.69 + 18 =
  23. 23.56 + 53 =
  24. 24.62 + 38 =
  25. 25.64 + 48 =
  26. 26.29 + 37 =
  27. 27.88 + 46 =
  28. 28.42 + 83 =
  29. 29.32 + 68 =
  30. 30.27 + 37 =
  31. 31.77 + 67 =
  32. 32.35 + 87 =
  33. 33.59 + 55 =
  34. 34.56 + 41 =
  35. 35.42 + 71 =
  36. 36.87 + 83 =
  37. 37.37 + 12 =
  38. 38.68 + 66 =
  39. 39.81 + 61 =
  40. 40.85 + 84 =

Answer key

  1. 111
  2. 127
  3. 120
  4. 115
  5. 63
  6. 102
  7. 109
  8. 145
  9. 87
  10. 70
  11. 62
  12. 95
  13. 96
  14. 108
  15. 108
  16. 114
  17. 116
  18. 118
  19. 61
  20. 132
  21. 132
  22. 87
  23. 109
  24. 100
  25. 112
  26. 66
  27. 134
  28. 125
  29. 100
  30. 64
  31. 144
  32. 122
  33. 114
  34. 97
  35. 113
  36. 170
  37. 49
  38. 134
  39. 142
  40. 169

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