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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 949 · 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. 1.28 + 36 =
  2. 2.76 + 38 =
  3. 3.36 + 43 =
  4. 4.35 + 19 =
  5. 5.73 + 16 =
  6. 6.81 + 74 =
  7. 7.55 + 75 =
  8. 8.85 + 32 =
  9. 9.58 + 51 =
  10. 10.31 + 69 =
  11. 11.88 + 49 =
  12. 12.22 + 31 =
  13. 13.54 + 35 =
  14. 14.62 + 19 =
  15. 15.23 + 27 =
  16. 16.26 + 14 =
  17. 17.43 + 51 =
  18. 18.51 + 86 =
  19. 19.50 + 84 =
  20. 20.36 + 19 =
  21. 21.37 + 15 =
  22. 22.23 + 36 =
  23. 23.63 + 47 =
  24. 24.83 + 75 =
  25. 25.58 + 87 =
  26. 26.71 + 32 =
  27. 27.89 + 82 =
  28. 28.25 + 27 =
  29. 29.42 + 49 =
  30. 30.89 + 83 =
  31. 31.22 + 75 =
  32. 32.35 + 61 =
  33. 33.61 + 25 =
  34. 34.89 + 88 =
  35. 35.31 + 66 =
  36. 36.29 + 41 =
  37. 37.74 + 68 =
  38. 38.27 + 77 =
  39. 39.53 + 39 =
  40. 40.77 + 61 =

Answer key

  1. 64
  2. 114
  3. 79
  4. 54
  5. 89
  6. 155
  7. 130
  8. 117
  9. 109
  10. 100
  11. 137
  12. 53
  13. 89
  14. 81
  15. 50
  16. 40
  17. 94
  18. 137
  19. 134
  20. 55
  21. 52
  22. 59
  23. 110
  24. 158
  25. 145
  26. 103
  27. 171
  28. 52
  29. 91
  30. 172
  31. 97
  32. 96
  33. 86
  34. 177
  35. 97
  36. 70
  37. 142
  38. 104
  39. 92
  40. 138

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