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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 704 · 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. 1.71 + 59 =
  2. 2.40 + 69 =
  3. 3.29 + 84 =
  4. 4.81 + 71 =
  5. 5.33 + 48 =
  6. 6.67 + 64 =
  7. 7.25 + 41 =
  8. 8.61 + 64 =
  9. 9.55 + 82 =
  10. 10.33 + 83 =
  11. 11.73 + 17 =
  12. 12.67 + 25 =
  13. 13.43 + 36 =
  14. 14.64 + 58 =
  15. 15.39 + 15 =
  16. 16.50 + 16 =
  17. 17.44 + 41 =
  18. 18.25 + 38 =
  19. 19.29 + 77 =
  20. 20.40 + 88 =
  21. 21.75 + 15 =
  22. 22.30 + 61 =
  23. 23.56 + 25 =
  24. 24.82 + 44 =
  25. 25.65 + 26 =
  26. 26.32 + 87 =
  27. 27.73 + 71 =
  28. 28.65 + 61 =
  29. 29.36 + 46 =
  30. 30.74 + 29 =
  31. 31.58 + 23 =
  32. 32.88 + 69 =
  33. 33.59 + 62 =
  34. 34.89 + 31 =
  35. 35.54 + 13 =
  36. 36.83 + 23 =
  37. 37.89 + 46 =
  38. 38.21 + 21 =
  39. 39.26 + 14 =
  40. 40.68 + 71 =

Answer key

  1. 130
  2. 109
  3. 113
  4. 152
  5. 81
  6. 131
  7. 66
  8. 125
  9. 137
  10. 116
  11. 90
  12. 92
  13. 79
  14. 122
  15. 54
  16. 66
  17. 85
  18. 63
  19. 106
  20. 128
  21. 90
  22. 91
  23. 81
  24. 126
  25. 91
  26. 119
  27. 144
  28. 126
  29. 82
  30. 103
  31. 81
  32. 157
  33. 121
  34. 120
  35. 67
  36. 106
  37. 135
  38. 42
  39. 40
  40. 139

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