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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 530 · 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. 1.83 + 74 =
  2. 2.72 + 51 =
  3. 3.64 + 53 =
  4. 4.81 + 86 =
  5. 5.25 + 45 =
  6. 6.83 + 85 =
  7. 7.27 + 59 =
  8. 8.73 + 64 =
  9. 9.73 + 85 =
  10. 10.78 + 49 =
  11. 11.81 + 58 =
  12. 12.54 + 43 =
  13. 13.86 + 41 =
  14. 14.79 + 76 =
  15. 15.56 + 48 =
  16. 16.56 + 18 =
  17. 17.67 + 76 =
  18. 18.74 + 25 =
  19. 19.33 + 68 =
  20. 20.25 + 79 =
  21. 21.46 + 89 =
  22. 22.22 + 17 =
  23. 23.27 + 17 =
  24. 24.38 + 78 =
  25. 25.32 + 26 =
  26. 26.82 + 44 =
  27. 27.42 + 45 =
  28. 28.27 + 47 =
  29. 29.42 + 17 =
  30. 30.61 + 61 =
  31. 31.37 + 55 =
  32. 32.72 + 81 =
  33. 33.42 + 56 =
  34. 34.87 + 66 =
  35. 35.83 + 61 =
  36. 36.58 + 64 =
  37. 37.71 + 83 =
  38. 38.22 + 13 =
  39. 39.64 + 21 =
  40. 40.58 + 31 =

Answer key

  1. 157
  2. 123
  3. 117
  4. 167
  5. 70
  6. 168
  7. 86
  8. 137
  9. 158
  10. 127
  11. 139
  12. 97
  13. 127
  14. 155
  15. 104
  16. 74
  17. 143
  18. 99
  19. 101
  20. 104
  21. 135
  22. 39
  23. 44
  24. 116
  25. 58
  26. 126
  27. 87
  28. 74
  29. 59
  30. 122
  31. 92
  32. 153
  33. 98
  34. 153
  35. 144
  36. 122
  37. 154
  38. 35
  39. 85
  40. 89

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