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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 698 · 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. 1.27 + 87 =
  2. 2.49 + 36 =
  3. 3.35 + 62 =
  4. 4.49 + 64 =
  5. 5.48 + 83 =
  6. 6.38 + 42 =
  7. 7.63 + 48 =
  8. 8.28 + 27 =
  9. 9.82 + 61 =
  10. 10.75 + 72 =
  11. 11.85 + 88 =
  12. 12.70 + 25 =
  13. 13.41 + 69 =
  14. 14.21 + 16 =
  15. 15.86 + 17 =
  16. 16.34 + 74 =
  17. 17.55 + 61 =
  18. 18.36 + 63 =
  19. 19.80 + 84 =
  20. 20.80 + 49 =
  21. 21.48 + 13 =
  22. 22.81 + 32 =
  23. 23.79 + 21 =
  24. 24.39 + 34 =
  25. 25.51 + 81 =
  26. 26.82 + 29 =
  27. 27.62 + 86 =
  28. 28.32 + 62 =
  29. 29.54 + 19 =
  30. 30.77 + 84 =
  31. 31.57 + 41 =
  32. 32.49 + 34 =
  33. 33.61 + 68 =
  34. 34.78 + 52 =
  35. 35.43 + 18 =
  36. 36.82 + 14 =
  37. 37.80 + 83 =
  38. 38.33 + 87 =
  39. 39.74 + 19 =
  40. 40.77 + 66 =

Answer key

  1. 114
  2. 85
  3. 97
  4. 113
  5. 131
  6. 80
  7. 111
  8. 55
  9. 143
  10. 147
  11. 173
  12. 95
  13. 110
  14. 37
  15. 103
  16. 108
  17. 116
  18. 99
  19. 164
  20. 129
  21. 61
  22. 113
  23. 100
  24. 73
  25. 132
  26. 111
  27. 148
  28. 94
  29. 73
  30. 161
  31. 98
  32. 83
  33. 129
  34. 130
  35. 61
  36. 96
  37. 163
  38. 120
  39. 93
  40. 143

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