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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 343 · 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. 1.22 + 88 =
  2. 2.61 + 73 =
  3. 3.42 + 73 =
  4. 4.81 + 14 =
  5. 5.77 + 28 =
  6. 6.45 + 72 =
  7. 7.33 + 86 =
  8. 8.86 + 32 =
  9. 9.88 + 42 =
  10. 10.82 + 28 =
  11. 11.69 + 12 =
  12. 12.67 + 21 =
  13. 13.74 + 28 =
  14. 14.51 + 58 =
  15. 15.59 + 79 =
  16. 16.24 + 29 =
  17. 17.74 + 17 =
  18. 18.82 + 89 =
  19. 19.50 + 23 =
  20. 20.60 + 29 =
  21. 21.31 + 71 =
  22. 22.39 + 71 =
  23. 23.38 + 34 =
  24. 24.28 + 41 =
  25. 25.35 + 53 =
  26. 26.23 + 23 =
  27. 27.66 + 51 =
  28. 28.58 + 71 =
  29. 29.89 + 39 =
  30. 30.47 + 54 =
  31. 31.25 + 55 =
  32. 32.48 + 17 =
  33. 33.26 + 44 =
  34. 34.79 + 48 =
  35. 35.44 + 75 =
  36. 36.27 + 87 =
  37. 37.21 + 76 =
  38. 38.44 + 41 =
  39. 39.83 + 35 =
  40. 40.29 + 34 =

Answer key

  1. 110
  2. 134
  3. 115
  4. 95
  5. 105
  6. 117
  7. 119
  8. 118
  9. 130
  10. 110
  11. 81
  12. 88
  13. 102
  14. 109
  15. 138
  16. 53
  17. 91
  18. 171
  19. 73
  20. 89
  21. 102
  22. 110
  23. 72
  24. 69
  25. 88
  26. 46
  27. 117
  28. 129
  29. 128
  30. 101
  31. 80
  32. 65
  33. 70
  34. 127
  35. 119
  36. 114
  37. 97
  38. 85
  39. 118
  40. 63

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