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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 963 · 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 + 32 =
  2. 2.71 + 61 =
  3. 3.72 + 16 =
  4. 4.59 + 85 =
  5. 5.59 + 29 =
  6. 6.36 + 14 =
  7. 7.53 + 71 =
  8. 8.89 + 63 =
  9. 9.68 + 13 =
  10. 10.68 + 66 =
  11. 11.87 + 42 =
  12. 12.23 + 25 =
  13. 13.65 + 56 =
  14. 14.31 + 26 =
  15. 15.83 + 46 =
  16. 16.35 + 46 =
  17. 17.45 + 61 =
  18. 18.72 + 29 =
  19. 19.58 + 79 =
  20. 20.57 + 84 =
  21. 21.73 + 38 =
  22. 22.21 + 46 =
  23. 23.78 + 52 =
  24. 24.41 + 78 =
  25. 25.61 + 71 =
  26. 26.86 + 51 =
  27. 27.51 + 61 =
  28. 28.32 + 32 =
  29. 29.61 + 31 =
  30. 30.68 + 46 =
  31. 31.58 + 31 =
  32. 32.29 + 69 =
  33. 33.58 + 77 =
  34. 34.29 + 62 =
  35. 35.22 + 84 =
  36. 36.82 + 89 =
  37. 37.84 + 81 =
  38. 38.25 + 36 =
  39. 39.42 + 47 =
  40. 40.34 + 39 =

Answer key

  1. 108
  2. 132
  3. 88
  4. 144
  5. 88
  6. 50
  7. 124
  8. 152
  9. 81
  10. 134
  11. 129
  12. 48
  13. 121
  14. 57
  15. 129
  16. 81
  17. 106
  18. 101
  19. 137
  20. 141
  21. 111
  22. 67
  23. 130
  24. 119
  25. 132
  26. 137
  27. 112
  28. 64
  29. 92
  30. 114
  31. 89
  32. 98
  33. 135
  34. 91
  35. 106
  36. 171
  37. 165
  38. 61
  39. 89
  40. 73

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