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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 226 · 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. 1.50 + 27 =
  2. 2.86 + 41 =
  3. 3.78 + 22 =
  4. 4.65 + 21 =
  5. 5.32 + 13 =
  6. 6.85 + 63 =
  7. 7.74 + 32 =
  8. 8.35 + 31 =
  9. 9.40 + 69 =
  10. 10.22 + 31 =
  11. 11.41 + 29 =
  12. 12.47 + 51 =
  13. 13.89 + 78 =
  14. 14.54 + 19 =
  15. 15.47 + 69 =
  16. 16.81 + 78 =
  17. 17.33 + 64 =
  18. 18.81 + 57 =
  19. 19.34 + 49 =
  20. 20.61 + 31 =
  21. 21.76 + 41 =
  22. 22.66 + 76 =
  23. 23.25 + 32 =
  24. 24.40 + 45 =
  25. 25.23 + 49 =
  26. 26.53 + 55 =
  27. 27.33 + 56 =
  28. 28.43 + 87 =
  29. 29.48 + 36 =
  30. 30.70 + 63 =
  31. 31.71 + 89 =
  32. 32.40 + 67 =
  33. 33.43 + 34 =
  34. 34.88 + 46 =
  35. 35.62 + 75 =
  36. 36.83 + 71 =
  37. 37.27 + 41 =
  38. 38.32 + 64 =
  39. 39.61 + 56 =
  40. 40.41 + 73 =

Answer key

  1. 77
  2. 127
  3. 100
  4. 86
  5. 45
  6. 148
  7. 106
  8. 66
  9. 109
  10. 53
  11. 70
  12. 98
  13. 167
  14. 73
  15. 116
  16. 159
  17. 97
  18. 138
  19. 83
  20. 92
  21. 117
  22. 142
  23. 57
  24. 85
  25. 72
  26. 108
  27. 89
  28. 130
  29. 84
  30. 133
  31. 160
  32. 107
  33. 77
  34. 134
  35. 137
  36. 154
  37. 68
  38. 96
  39. 117
  40. 114

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