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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 961 · 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. 1.24 + 54 =
  2. 2.65 + 27 =
  3. 3.77 + 87 =
  4. 4.39 + 42 =
  5. 5.67 + 41 =
  6. 6.22 + 18 =
  7. 7.39 + 88 =
  8. 8.42 + 12 =
  9. 9.51 + 75 =
  10. 10.35 + 36 =
  11. 11.73 + 51 =
  12. 12.28 + 81 =
  13. 13.65 + 41 =
  14. 14.83 + 81 =
  15. 15.32 + 51 =
  16. 16.80 + 45 =
  17. 17.50 + 13 =
  18. 18.23 + 21 =
  19. 19.76 + 29 =
  20. 20.62 + 88 =
  21. 21.64 + 69 =
  22. 22.25 + 31 =
  23. 23.33 + 61 =
  24. 24.39 + 82 =
  25. 25.26 + 13 =
  26. 26.29 + 62 =
  27. 27.61 + 19 =
  28. 28.66 + 71 =
  29. 29.28 + 35 =
  30. 30.66 + 21 =
  31. 31.77 + 12 =
  32. 32.46 + 57 =
  33. 33.54 + 76 =
  34. 34.64 + 89 =
  35. 35.83 + 71 =
  36. 36.82 + 71 =
  37. 37.56 + 19 =
  38. 38.54 + 57 =
  39. 39.25 + 79 =
  40. 40.42 + 25 =

Answer key

  1. 78
  2. 92
  3. 164
  4. 81
  5. 108
  6. 40
  7. 127
  8. 54
  9. 126
  10. 71
  11. 124
  12. 109
  13. 106
  14. 164
  15. 83
  16. 125
  17. 63
  18. 44
  19. 105
  20. 150
  21. 133
  22. 56
  23. 94
  24. 121
  25. 39
  26. 91
  27. 80
  28. 137
  29. 63
  30. 87
  31. 89
  32. 103
  33. 130
  34. 153
  35. 154
  36. 153
  37. 75
  38. 111
  39. 104
  40. 67

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