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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 964 · 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. 1.35 + 33 =
  2. 2.43 + 72 =
  3. 3.36 + 69 =
  4. 4.76 + 76 =
  5. 5.85 + 64 =
  6. 6.80 + 75 =
  7. 7.77 + 38 =
  8. 8.31 + 51 =
  9. 9.76 + 24 =
  10. 10.80 + 71 =
  11. 11.77 + 71 =
  12. 12.80 + 83 =
  13. 13.66 + 31 =
  14. 14.44 + 13 =
  15. 15.53 + 54 =
  16. 16.50 + 53 =
  17. 17.23 + 26 =
  18. 18.24 + 41 =
  19. 19.45 + 49 =
  20. 20.59 + 41 =
  21. 21.31 + 26 =
  22. 22.42 + 59 =
  23. 23.77 + 16 =
  24. 24.75 + 54 =
  25. 25.38 + 48 =
  26. 26.30 + 66 =
  27. 27.26 + 88 =
  28. 28.35 + 49 =
  29. 29.89 + 43 =
  30. 30.41 + 27 =
  31. 31.62 + 37 =
  32. 32.27 + 45 =
  33. 33.60 + 82 =
  34. 34.58 + 53 =
  35. 35.56 + 31 =
  36. 36.33 + 21 =
  37. 37.37 + 61 =
  38. 38.41 + 72 =
  39. 39.61 + 34 =
  40. 40.74 + 59 =

Answer key

  1. 68
  2. 115
  3. 105
  4. 152
  5. 149
  6. 155
  7. 115
  8. 82
  9. 100
  10. 151
  11. 148
  12. 163
  13. 97
  14. 57
  15. 107
  16. 103
  17. 49
  18. 65
  19. 94
  20. 100
  21. 57
  22. 101
  23. 93
  24. 129
  25. 86
  26. 96
  27. 114
  28. 84
  29. 132
  30. 68
  31. 99
  32. 72
  33. 142
  34. 111
  35. 87
  36. 54
  37. 98
  38. 113
  39. 95
  40. 133

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