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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 987 · 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. 1.89 + 45 =
  2. 2.47 + 16 =
  3. 3.41 + 69 =
  4. 4.75 + 32 =
  5. 5.34 + 28 =
  6. 6.89 + 56 =
  7. 7.78 + 27 =
  8. 8.68 + 81 =
  9. 9.81 + 87 =
  10. 10.49 + 21 =
  11. 11.22 + 24 =
  12. 12.22 + 71 =
  13. 13.89 + 55 =
  14. 14.37 + 12 =
  15. 15.47 + 84 =
  16. 16.50 + 46 =
  17. 17.55 + 56 =
  18. 18.62 + 51 =
  19. 19.65 + 83 =
  20. 20.39 + 17 =
  21. 21.66 + 45 =
  22. 22.43 + 89 =
  23. 23.49 + 58 =
  24. 24.50 + 22 =
  25. 25.59 + 17 =
  26. 26.73 + 24 =
  27. 27.53 + 16 =
  28. 28.64 + 47 =
  29. 29.61 + 84 =
  30. 30.88 + 63 =
  31. 31.73 + 15 =
  32. 32.68 + 57 =
  33. 33.57 + 88 =
  34. 34.51 + 54 =
  35. 35.82 + 16 =
  36. 36.31 + 19 =
  37. 37.46 + 45 =
  38. 38.43 + 75 =
  39. 39.36 + 87 =
  40. 40.26 + 19 =

Answer key

  1. 134
  2. 63
  3. 110
  4. 107
  5. 62
  6. 145
  7. 105
  8. 149
  9. 168
  10. 70
  11. 46
  12. 93
  13. 144
  14. 49
  15. 131
  16. 96
  17. 111
  18. 113
  19. 148
  20. 56
  21. 111
  22. 132
  23. 107
  24. 72
  25. 76
  26. 97
  27. 69
  28. 111
  29. 145
  30. 151
  31. 88
  32. 125
  33. 145
  34. 105
  35. 98
  36. 50
  37. 91
  38. 118
  39. 123
  40. 45

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