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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 894 · 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. 1.48 + 72 =
  2. 2.72 + 15 =
  3. 3.83 + 86 =
  4. 4.88 + 85 =
  5. 5.60 + 84 =
  6. 6.83 + 29 =
  7. 7.39 + 71 =
  8. 8.47 + 39 =
  9. 9.70 + 76 =
  10. 10.29 + 49 =
  11. 11.67 + 81 =
  12. 12.41 + 67 =
  13. 13.79 + 53 =
  14. 14.60 + 35 =
  15. 15.62 + 35 =
  16. 16.25 + 73 =
  17. 17.88 + 31 =
  18. 18.82 + 59 =
  19. 19.38 + 77 =
  20. 20.65 + 77 =
  21. 21.62 + 83 =
  22. 22.75 + 22 =
  23. 23.35 + 18 =
  24. 24.34 + 71 =
  25. 25.71 + 34 =
  26. 26.33 + 45 =
  27. 27.56 + 28 =
  28. 28.41 + 49 =
  29. 29.89 + 49 =
  30. 30.44 + 26 =
  31. 31.82 + 61 =
  32. 32.39 + 54 =
  33. 33.21 + 12 =
  34. 34.41 + 18 =
  35. 35.72 + 65 =
  36. 36.29 + 76 =
  37. 37.29 + 67 =
  38. 38.23 + 85 =
  39. 39.31 + 53 =
  40. 40.59 + 69 =

Answer key

  1. 120
  2. 87
  3. 169
  4. 173
  5. 144
  6. 112
  7. 110
  8. 86
  9. 146
  10. 78
  11. 148
  12. 108
  13. 132
  14. 95
  15. 97
  16. 98
  17. 119
  18. 141
  19. 115
  20. 142
  21. 145
  22. 97
  23. 53
  24. 105
  25. 105
  26. 78
  27. 84
  28. 90
  29. 138
  30. 70
  31. 143
  32. 93
  33. 33
  34. 59
  35. 137
  36. 105
  37. 96
  38. 108
  39. 84
  40. 128

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