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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 757 · 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. 1.41 + 61 =
  2. 2.76 + 15 =
  3. 3.32 + 26 =
  4. 4.36 + 28 =
  5. 5.51 + 12 =
  6. 6.61 + 29 =
  7. 7.25 + 57 =
  8. 8.41 + 65 =
  9. 9.73 + 41 =
  10. 10.85 + 71 =
  11. 11.87 + 44 =
  12. 12.83 + 14 =
  13. 13.58 + 61 =
  14. 14.85 + 62 =
  15. 15.43 + 89 =
  16. 16.57 + 61 =
  17. 17.36 + 63 =
  18. 18.32 + 19 =
  19. 19.70 + 32 =
  20. 20.89 + 87 =
  21. 21.46 + 81 =
  22. 22.82 + 14 =
  23. 23.45 + 15 =
  24. 24.32 + 36 =
  25. 25.62 + 36 =
  26. 26.57 + 71 =
  27. 27.46 + 39 =
  28. 28.52 + 29 =
  29. 29.68 + 62 =
  30. 30.85 + 59 =
  31. 31.64 + 27 =
  32. 32.41 + 32 =
  33. 33.44 + 65 =
  34. 34.32 + 61 =
  35. 35.45 + 66 =
  36. 36.53 + 36 =
  37. 37.79 + 31 =
  38. 38.39 + 51 =
  39. 39.41 + 74 =
  40. 40.24 + 34 =

Answer key

  1. 102
  2. 91
  3. 58
  4. 64
  5. 63
  6. 90
  7. 82
  8. 106
  9. 114
  10. 156
  11. 131
  12. 97
  13. 119
  14. 147
  15. 132
  16. 118
  17. 99
  18. 51
  19. 102
  20. 176
  21. 127
  22. 96
  23. 60
  24. 68
  25. 98
  26. 128
  27. 85
  28. 81
  29. 130
  30. 144
  31. 91
  32. 73
  33. 109
  34. 93
  35. 111
  36. 89
  37. 110
  38. 90
  39. 115
  40. 58

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