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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 232 · 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. 1.76 + 76 =
  2. 2.83 + 85 =
  3. 3.87 + 69 =
  4. 4.64 + 71 =
  5. 5.78 + 17 =
  6. 6.84 + 42 =
  7. 7.53 + 42 =
  8. 8.32 + 83 =
  9. 9.41 + 61 =
  10. 10.64 + 83 =
  11. 11.73 + 43 =
  12. 12.84 + 14 =
  13. 13.59 + 38 =
  14. 14.43 + 14 =
  15. 15.63 + 31 =
  16. 16.78 + 18 =
  17. 17.82 + 77 =
  18. 18.41 + 21 =
  19. 19.70 + 57 =
  20. 20.78 + 53 =
  21. 21.74 + 29 =
  22. 22.38 + 65 =
  23. 23.48 + 61 =
  24. 24.40 + 34 =
  25. 25.55 + 45 =
  26. 26.32 + 79 =
  27. 27.64 + 73 =
  28. 28.53 + 24 =
  29. 29.68 + 44 =
  30. 30.64 + 34 =
  31. 31.27 + 89 =
  32. 32.28 + 28 =
  33. 33.71 + 21 =
  34. 34.61 + 47 =
  35. 35.88 + 88 =
  36. 36.56 + 88 =
  37. 37.88 + 42 =
  38. 38.30 + 26 =
  39. 39.26 + 79 =
  40. 40.82 + 22 =

Answer key

  1. 152
  2. 168
  3. 156
  4. 135
  5. 95
  6. 126
  7. 95
  8. 115
  9. 102
  10. 147
  11. 116
  12. 98
  13. 97
  14. 57
  15. 94
  16. 96
  17. 159
  18. 62
  19. 127
  20. 131
  21. 103
  22. 103
  23. 109
  24. 74
  25. 100
  26. 111
  27. 137
  28. 77
  29. 112
  30. 98
  31. 116
  32. 56
  33. 92
  34. 108
  35. 176
  36. 144
  37. 130
  38. 56
  39. 105
  40. 104

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