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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 931 · 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. 1.80 + 28 =
  2. 2.27 + 59 =
  3. 3.80 + 32 =
  4. 4.56 + 65 =
  5. 5.68 + 22 =
  6. 6.73 + 49 =
  7. 7.52 + 63 =
  8. 8.33 + 22 =
  9. 9.41 + 31 =
  10. 10.81 + 22 =
  11. 11.21 + 38 =
  12. 12.28 + 71 =
  13. 13.87 + 37 =
  14. 14.36 + 59 =
  15. 15.85 + 83 =
  16. 16.33 + 24 =
  17. 17.43 + 52 =
  18. 18.24 + 31 =
  19. 19.38 + 32 =
  20. 20.55 + 55 =
  21. 21.24 + 83 =
  22. 22.56 + 79 =
  23. 23.45 + 55 =
  24. 24.22 + 68 =
  25. 25.62 + 56 =
  26. 26.65 + 14 =
  27. 27.61 + 22 =
  28. 28.78 + 76 =
  29. 29.37 + 59 =
  30. 30.79 + 83 =
  31. 31.71 + 65 =
  32. 32.63 + 53 =
  33. 33.66 + 23 =
  34. 34.26 + 71 =
  35. 35.87 + 48 =
  36. 36.30 + 86 =
  37. 37.48 + 65 =
  38. 38.59 + 43 =
  39. 39.35 + 18 =
  40. 40.52 + 46 =

Answer key

  1. 108
  2. 86
  3. 112
  4. 121
  5. 90
  6. 122
  7. 115
  8. 55
  9. 72
  10. 103
  11. 59
  12. 99
  13. 124
  14. 95
  15. 168
  16. 57
  17. 95
  18. 55
  19. 70
  20. 110
  21. 107
  22. 135
  23. 100
  24. 90
  25. 118
  26. 79
  27. 83
  28. 154
  29. 96
  30. 162
  31. 136
  32. 116
  33. 89
  34. 97
  35. 135
  36. 116
  37. 113
  38. 102
  39. 53
  40. 98

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