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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 937 · 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. 1.59 + 53 =
  2. 2.56 + 16 =
  3. 3.62 + 77 =
  4. 4.62 + 22 =
  5. 5.50 + 54 =
  6. 6.59 + 26 =
  7. 7.36 + 39 =
  8. 8.87 + 72 =
  9. 9.83 + 88 =
  10. 10.70 + 71 =
  11. 11.21 + 61 =
  12. 12.82 + 45 =
  13. 13.33 + 43 =
  14. 14.83 + 38 =
  15. 15.71 + 22 =
  16. 16.35 + 77 =
  17. 17.27 + 61 =
  18. 18.64 + 59 =
  19. 19.35 + 23 =
  20. 20.31 + 17 =
  21. 21.73 + 34 =
  22. 22.28 + 22 =
  23. 23.46 + 57 =
  24. 24.39 + 51 =
  25. 25.88 + 23 =
  26. 26.25 + 36 =
  27. 27.72 + 35 =
  28. 28.88 + 53 =
  29. 29.22 + 13 =
  30. 30.65 + 34 =
  31. 31.89 + 16 =
  32. 32.69 + 85 =
  33. 33.21 + 17 =
  34. 34.55 + 71 =
  35. 35.50 + 27 =
  36. 36.34 + 39 =
  37. 37.76 + 16 =
  38. 38.64 + 64 =
  39. 39.36 + 22 =
  40. 40.37 + 31 =

Answer key

  1. 112
  2. 72
  3. 139
  4. 84
  5. 104
  6. 85
  7. 75
  8. 159
  9. 171
  10. 141
  11. 82
  12. 127
  13. 76
  14. 121
  15. 93
  16. 112
  17. 88
  18. 123
  19. 58
  20. 48
  21. 107
  22. 50
  23. 103
  24. 90
  25. 111
  26. 61
  27. 107
  28. 141
  29. 35
  30. 99
  31. 105
  32. 154
  33. 38
  34. 126
  35. 77
  36. 73
  37. 92
  38. 128
  39. 58
  40. 68

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