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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 91 · 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. 1.39 + 55 =
  2. 2.22 + 86 =
  3. 3.39 + 53 =
  4. 4.75 + 53 =
  5. 5.43 + 29 =
  6. 6.56 + 19 =
  7. 7.63 + 17 =
  8. 8.55 + 83 =
  9. 9.81 + 48 =
  10. 10.40 + 61 =
  11. 11.34 + 61 =
  12. 12.56 + 52 =
  13. 13.60 + 19 =
  14. 14.47 + 24 =
  15. 15.43 + 59 =
  16. 16.39 + 41 =
  17. 17.41 + 44 =
  18. 18.25 + 37 =
  19. 19.61 + 53 =
  20. 20.25 + 27 =
  21. 21.42 + 44 =
  22. 22.33 + 28 =
  23. 23.25 + 25 =
  24. 24.69 + 38 =
  25. 25.50 + 27 =
  26. 26.42 + 35 =
  27. 27.57 + 29 =
  28. 28.29 + 84 =
  29. 29.49 + 84 =
  30. 30.71 + 25 =
  31. 31.60 + 53 =
  32. 32.24 + 15 =
  33. 33.78 + 45 =
  34. 34.26 + 44 =
  35. 35.88 + 89 =
  36. 36.40 + 81 =
  37. 37.72 + 61 =
  38. 38.25 + 41 =
  39. 39.34 + 84 =
  40. 40.78 + 42 =

Answer key

  1. 94
  2. 108
  3. 92
  4. 128
  5. 72
  6. 75
  7. 80
  8. 138
  9. 129
  10. 101
  11. 95
  12. 108
  13. 79
  14. 71
  15. 102
  16. 80
  17. 85
  18. 62
  19. 114
  20. 52
  21. 86
  22. 61
  23. 50
  24. 107
  25. 77
  26. 77
  27. 86
  28. 113
  29. 133
  30. 96
  31. 113
  32. 39
  33. 123
  34. 70
  35. 177
  36. 121
  37. 133
  38. 66
  39. 118
  40. 120

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