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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 613 · 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. 1.32 + 71 =
  2. 2.79 + 71 =
  3. 3.29 + 44 =
  4. 4.69 + 31 =
  5. 5.40 + 53 =
  6. 6.85 + 64 =
  7. 7.39 + 86 =
  8. 8.73 + 18 =
  9. 9.54 + 25 =
  10. 10.51 + 65 =
  11. 11.26 + 23 =
  12. 12.68 + 65 =
  13. 13.36 + 31 =
  14. 14.65 + 51 =
  15. 15.43 + 17 =
  16. 16.26 + 74 =
  17. 17.73 + 35 =
  18. 18.27 + 12 =
  19. 19.81 + 15 =
  20. 20.53 + 64 =
  21. 21.83 + 64 =
  22. 22.78 + 34 =
  23. 23.32 + 24 =
  24. 24.37 + 58 =
  25. 25.53 + 61 =
  26. 26.73 + 23 =
  27. 27.75 + 22 =
  28. 28.40 + 81 =
  29. 29.34 + 86 =
  30. 30.58 + 45 =
  31. 31.32 + 58 =
  32. 32.73 + 81 =
  33. 33.41 + 32 =
  34. 34.39 + 23 =
  35. 35.89 + 89 =
  36. 36.70 + 81 =
  37. 37.85 + 46 =
  38. 38.82 + 44 =
  39. 39.46 + 35 =
  40. 40.70 + 23 =

Answer key

  1. 103
  2. 150
  3. 73
  4. 100
  5. 93
  6. 149
  7. 125
  8. 91
  9. 79
  10. 116
  11. 49
  12. 133
  13. 67
  14. 116
  15. 60
  16. 100
  17. 108
  18. 39
  19. 96
  20. 117
  21. 147
  22. 112
  23. 56
  24. 95
  25. 114
  26. 96
  27. 97
  28. 121
  29. 120
  30. 103
  31. 90
  32. 154
  33. 73
  34. 62
  35. 178
  36. 151
  37. 131
  38. 126
  39. 81
  40. 93

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