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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 940 · 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. 1.78 + 41 =
  2. 2.85 + 58 =
  3. 3.88 + 56 =
  4. 4.34 + 28 =
  5. 5.58 + 29 =
  6. 6.83 + 84 =
  7. 7.23 + 64 =
  8. 8.61 + 48 =
  9. 9.35 + 61 =
  10. 10.23 + 61 =
  11. 11.72 + 23 =
  12. 12.85 + 56 =
  13. 13.84 + 31 =
  14. 14.30 + 29 =
  15. 15.42 + 85 =
  16. 16.30 + 62 =
  17. 17.49 + 41 =
  18. 18.28 + 23 =
  19. 19.64 + 37 =
  20. 20.41 + 71 =
  21. 21.31 + 34 =
  22. 22.78 + 52 =
  23. 23.79 + 26 =
  24. 24.59 + 35 =
  25. 25.50 + 12 =
  26. 26.48 + 82 =
  27. 27.44 + 41 =
  28. 28.56 + 63 =
  29. 29.54 + 35 =
  30. 30.21 + 72 =
  31. 31.44 + 46 =
  32. 32.75 + 26 =
  33. 33.89 + 16 =
  34. 34.28 + 49 =
  35. 35.40 + 41 =
  36. 36.29 + 31 =
  37. 37.81 + 77 =
  38. 38.57 + 47 =
  39. 39.45 + 71 =
  40. 40.82 + 86 =

Answer key

  1. 119
  2. 143
  3. 144
  4. 62
  5. 87
  6. 167
  7. 87
  8. 109
  9. 96
  10. 84
  11. 95
  12. 141
  13. 115
  14. 59
  15. 127
  16. 92
  17. 90
  18. 51
  19. 101
  20. 112
  21. 65
  22. 130
  23. 105
  24. 94
  25. 62
  26. 130
  27. 85
  28. 119
  29. 89
  30. 93
  31. 90
  32. 101
  33. 105
  34. 77
  35. 81
  36. 60
  37. 158
  38. 104
  39. 116
  40. 168

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