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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 934 · 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. 1.45 + 49 =
  2. 2.39 + 33 =
  3. 3.41 + 81 =
  4. 4.21 + 67 =
  5. 5.79 + 27 =
  6. 6.84 + 18 =
  7. 7.26 + 23 =
  8. 8.81 + 45 =
  9. 9.41 + 15 =
  10. 10.58 + 61 =
  11. 11.86 + 75 =
  12. 12.40 + 86 =
  13. 13.35 + 41 =
  14. 14.58 + 16 =
  15. 15.84 + 14 =
  16. 16.47 + 24 =
  17. 17.35 + 82 =
  18. 18.24 + 66 =
  19. 19.26 + 71 =
  20. 20.47 + 54 =
  21. 21.59 + 36 =
  22. 22.36 + 87 =
  23. 23.63 + 51 =
  24. 24.69 + 72 =
  25. 25.45 + 58 =
  26. 26.40 + 18 =
  27. 27.78 + 62 =
  28. 28.32 + 34 =
  29. 29.44 + 69 =
  30. 30.37 + 61 =
  31. 31.78 + 44 =
  32. 32.86 + 24 =
  33. 33.35 + 37 =
  34. 34.25 + 27 =
  35. 35.59 + 22 =
  36. 36.23 + 31 =
  37. 37.74 + 31 =
  38. 38.55 + 16 =
  39. 39.70 + 29 =
  40. 40.36 + 51 =

Answer key

  1. 94
  2. 72
  3. 122
  4. 88
  5. 106
  6. 102
  7. 49
  8. 126
  9. 56
  10. 119
  11. 161
  12. 126
  13. 76
  14. 74
  15. 98
  16. 71
  17. 117
  18. 90
  19. 97
  20. 101
  21. 95
  22. 123
  23. 114
  24. 141
  25. 103
  26. 58
  27. 140
  28. 66
  29. 113
  30. 98
  31. 122
  32. 110
  33. 72
  34. 52
  35. 81
  36. 54
  37. 105
  38. 71
  39. 99
  40. 87

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