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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 954 · 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. 1.77 + 69 =
  2. 2.67 + 52 =
  3. 3.83 + 27 =
  4. 4.24 + 52 =
  5. 5.38 + 81 =
  6. 6.67 + 26 =
  7. 7.58 + 63 =
  8. 8.30 + 22 =
  9. 9.55 + 57 =
  10. 10.71 + 58 =
  11. 11.66 + 28 =
  12. 12.30 + 51 =
  13. 13.65 + 86 =
  14. 14.51 + 13 =
  15. 15.70 + 25 =
  16. 16.25 + 81 =
  17. 17.35 + 59 =
  18. 18.47 + 18 =
  19. 19.27 + 37 =
  20. 20.40 + 66 =
  21. 21.75 + 78 =
  22. 22.24 + 77 =
  23. 23.30 + 82 =
  24. 24.23 + 82 =
  25. 25.67 + 82 =
  26. 26.27 + 44 =
  27. 27.43 + 41 =
  28. 28.40 + 46 =
  29. 29.23 + 15 =
  30. 30.21 + 38 =
  31. 31.82 + 69 =
  32. 32.69 + 68 =
  33. 33.50 + 12 =
  34. 34.81 + 31 =
  35. 35.43 + 67 =
  36. 36.23 + 47 =
  37. 37.56 + 22 =
  38. 38.86 + 41 =
  39. 39.50 + 73 =
  40. 40.23 + 35 =

Answer key

  1. 146
  2. 119
  3. 110
  4. 76
  5. 119
  6. 93
  7. 121
  8. 52
  9. 112
  10. 129
  11. 94
  12. 81
  13. 151
  14. 64
  15. 95
  16. 106
  17. 94
  18. 65
  19. 64
  20. 106
  21. 153
  22. 101
  23. 112
  24. 105
  25. 149
  26. 71
  27. 84
  28. 86
  29. 38
  30. 59
  31. 151
  32. 137
  33. 62
  34. 112
  35. 110
  36. 70
  37. 78
  38. 127
  39. 123
  40. 58

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