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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 966 · 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. 1.50 + 46 =
  2. 2.68 + 83 =
  3. 3.77 + 67 =
  4. 4.64 + 33 =
  5. 5.52 + 31 =
  6. 6.70 + 38 =
  7. 7.81 + 27 =
  8. 8.37 + 41 =
  9. 9.58 + 83 =
  10. 10.58 + 42 =
  11. 11.29 + 29 =
  12. 12.31 + 71 =
  13. 13.59 + 63 =
  14. 14.42 + 45 =
  15. 15.34 + 48 =
  16. 16.24 + 19 =
  17. 17.27 + 61 =
  18. 18.29 + 64 =
  19. 19.76 + 23 =
  20. 20.39 + 87 =
  21. 21.72 + 26 =
  22. 22.38 + 76 =
  23. 23.26 + 38 =
  24. 24.21 + 81 =
  25. 25.79 + 19 =
  26. 26.89 + 22 =
  27. 27.61 + 28 =
  28. 28.56 + 16 =
  29. 29.75 + 55 =
  30. 30.65 + 29 =
  31. 31.33 + 15 =
  32. 32.29 + 75 =
  33. 33.55 + 27 =
  34. 34.62 + 17 =
  35. 35.38 + 28 =
  36. 36.39 + 67 =
  37. 37.37 + 88 =
  38. 38.30 + 83 =
  39. 39.22 + 25 =
  40. 40.38 + 45 =

Answer key

  1. 96
  2. 151
  3. 144
  4. 97
  5. 83
  6. 108
  7. 108
  8. 78
  9. 141
  10. 100
  11. 58
  12. 102
  13. 122
  14. 87
  15. 82
  16. 43
  17. 88
  18. 93
  19. 99
  20. 126
  21. 98
  22. 114
  23. 64
  24. 102
  25. 98
  26. 111
  27. 89
  28. 72
  29. 130
  30. 94
  31. 48
  32. 104
  33. 82
  34. 79
  35. 66
  36. 106
  37. 125
  38. 113
  39. 47
  40. 83

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