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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 946 · 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. 1.74 + 31 =
  2. 2.75 + 59 =
  3. 3.56 + 76 =
  4. 4.80 + 52 =
  5. 5.84 + 17 =
  6. 6.73 + 22 =
  7. 7.37 + 26 =
  8. 8.38 + 87 =
  9. 9.49 + 53 =
  10. 10.59 + 86 =
  11. 11.49 + 76 =
  12. 12.51 + 77 =
  13. 13.69 + 62 =
  14. 14.59 + 34 =
  15. 15.36 + 83 =
  16. 16.53 + 41 =
  17. 17.25 + 76 =
  18. 18.53 + 31 =
  19. 19.76 + 51 =
  20. 20.48 + 77 =
  21. 21.40 + 18 =
  22. 22.81 + 51 =
  23. 23.76 + 58 =
  24. 24.35 + 31 =
  25. 25.48 + 58 =
  26. 26.30 + 22 =
  27. 27.77 + 69 =
  28. 28.35 + 82 =
  29. 29.53 + 27 =
  30. 30.85 + 24 =
  31. 31.88 + 82 =
  32. 32.48 + 72 =
  33. 33.31 + 48 =
  34. 34.56 + 67 =
  35. 35.31 + 35 =
  36. 36.50 + 85 =
  37. 37.73 + 18 =
  38. 38.39 + 38 =
  39. 39.56 + 47 =
  40. 40.50 + 49 =

Answer key

  1. 105
  2. 134
  3. 132
  4. 132
  5. 101
  6. 95
  7. 63
  8. 125
  9. 102
  10. 145
  11. 125
  12. 128
  13. 131
  14. 93
  15. 119
  16. 94
  17. 101
  18. 84
  19. 127
  20. 125
  21. 58
  22. 132
  23. 134
  24. 66
  25. 106
  26. 52
  27. 146
  28. 117
  29. 80
  30. 109
  31. 170
  32. 120
  33. 79
  34. 123
  35. 66
  36. 135
  37. 91
  38. 77
  39. 103
  40. 99

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