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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 984 · 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. 1.40 + 87 =
  2. 2.42 + 83 =
  3. 3.85 + 33 =
  4. 4.60 + 74 =
  5. 5.53 + 15 =
  6. 6.53 + 55 =
  7. 7.60 + 65 =
  8. 8.34 + 45 =
  9. 9.68 + 51 =
  10. 10.44 + 72 =
  11. 11.84 + 67 =
  12. 12.89 + 65 =
  13. 13.39 + 65 =
  14. 14.89 + 62 =
  15. 15.52 + 19 =
  16. 16.86 + 71 =
  17. 17.72 + 34 =
  18. 18.41 + 66 =
  19. 19.27 + 64 =
  20. 20.38 + 72 =
  21. 21.29 + 36 =
  22. 22.85 + 19 =
  23. 23.32 + 26 =
  24. 24.64 + 66 =
  25. 25.89 + 41 =
  26. 26.88 + 54 =
  27. 27.66 + 87 =
  28. 28.84 + 36 =
  29. 29.76 + 71 =
  30. 30.55 + 59 =
  31. 31.21 + 19 =
  32. 32.32 + 15 =
  33. 33.27 + 32 =
  34. 34.60 + 13 =
  35. 35.85 + 83 =
  36. 36.56 + 21 =
  37. 37.51 + 17 =
  38. 38.38 + 64 =
  39. 39.62 + 36 =
  40. 40.43 + 53 =

Answer key

  1. 127
  2. 125
  3. 118
  4. 134
  5. 68
  6. 108
  7. 125
  8. 79
  9. 119
  10. 116
  11. 151
  12. 154
  13. 104
  14. 151
  15. 71
  16. 157
  17. 106
  18. 107
  19. 91
  20. 110
  21. 65
  22. 104
  23. 58
  24. 130
  25. 130
  26. 142
  27. 153
  28. 120
  29. 147
  30. 114
  31. 40
  32. 47
  33. 59
  34. 73
  35. 168
  36. 77
  37. 68
  38. 102
  39. 98
  40. 96

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