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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 935 · 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. 1.43 + 58 =
  2. 2.49 + 45 =
  3. 3.29 + 76 =
  4. 4.78 + 63 =
  5. 5.25 + 46 =
  6. 6.84 + 41 =
  7. 7.31 + 33 =
  8. 8.77 + 38 =
  9. 9.35 + 34 =
  10. 10.77 + 51 =
  11. 11.46 + 78 =
  12. 12.58 + 52 =
  13. 13.68 + 66 =
  14. 14.38 + 59 =
  15. 15.83 + 51 =
  16. 16.65 + 65 =
  17. 17.46 + 26 =
  18. 18.35 + 71 =
  19. 19.59 + 88 =
  20. 20.89 + 29 =
  21. 21.78 + 27 =
  22. 22.38 + 51 =
  23. 23.75 + 51 =
  24. 24.69 + 33 =
  25. 25.40 + 53 =
  26. 26.47 + 21 =
  27. 27.64 + 43 =
  28. 28.46 + 54 =
  29. 29.48 + 44 =
  30. 30.43 + 68 =
  31. 31.33 + 37 =
  32. 32.52 + 29 =
  33. 33.66 + 12 =
  34. 34.44 + 67 =
  35. 35.29 + 65 =
  36. 36.23 + 68 =
  37. 37.75 + 17 =
  38. 38.32 + 85 =
  39. 39.46 + 55 =
  40. 40.78 + 26 =

Answer key

  1. 101
  2. 94
  3. 105
  4. 141
  5. 71
  6. 125
  7. 64
  8. 115
  9. 69
  10. 128
  11. 124
  12. 110
  13. 134
  14. 97
  15. 134
  16. 130
  17. 72
  18. 106
  19. 147
  20. 118
  21. 105
  22. 89
  23. 126
  24. 102
  25. 93
  26. 68
  27. 107
  28. 100
  29. 92
  30. 111
  31. 70
  32. 81
  33. 78
  34. 111
  35. 94
  36. 91
  37. 92
  38. 117
  39. 101
  40. 104

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