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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 183 · 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. 1.25 + 71 =
  2. 2.24 + 81 =
  3. 3.71 + 83 =
  4. 4.83 + 24 =
  5. 5.81 + 31 =
  6. 6.28 + 71 =
  7. 7.31 + 83 =
  8. 8.67 + 12 =
  9. 9.88 + 58 =
  10. 10.25 + 66 =
  11. 11.35 + 66 =
  12. 12.38 + 26 =
  13. 13.61 + 34 =
  14. 14.27 + 76 =
  15. 15.29 + 17 =
  16. 16.86 + 14 =
  17. 17.67 + 59 =
  18. 18.65 + 69 =
  19. 19.67 + 73 =
  20. 20.88 + 79 =
  21. 21.34 + 77 =
  22. 22.27 + 88 =
  23. 23.64 + 66 =
  24. 24.72 + 47 =
  25. 25.30 + 22 =
  26. 26.75 + 59 =
  27. 27.46 + 35 =
  28. 28.81 + 17 =
  29. 29.88 + 13 =
  30. 30.32 + 87 =
  31. 31.40 + 18 =
  32. 32.85 + 71 =
  33. 33.78 + 27 =
  34. 34.61 + 88 =
  35. 35.52 + 82 =
  36. 36.28 + 83 =
  37. 37.70 + 37 =
  38. 38.60 + 76 =
  39. 39.84 + 78 =
  40. 40.52 + 15 =

Answer key

  1. 96
  2. 105
  3. 154
  4. 107
  5. 112
  6. 99
  7. 114
  8. 79
  9. 146
  10. 91
  11. 101
  12. 64
  13. 95
  14. 103
  15. 46
  16. 100
  17. 126
  18. 134
  19. 140
  20. 167
  21. 111
  22. 115
  23. 130
  24. 119
  25. 52
  26. 134
  27. 81
  28. 98
  29. 101
  30. 119
  31. 58
  32. 156
  33. 105
  34. 149
  35. 134
  36. 111
  37. 107
  38. 136
  39. 162
  40. 67

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