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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 114 · 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. 1.60 + 62 =
  2. 2.73 + 26 =
  3. 3.68 + 38 =
  4. 4.61 + 54 =
  5. 5.48 + 29 =
  6. 6.81 + 71 =
  7. 7.60 + 36 =
  8. 8.32 + 71 =
  9. 9.21 + 79 =
  10. 10.59 + 32 =
  11. 11.59 + 72 =
  12. 12.39 + 69 =
  13. 13.24 + 65 =
  14. 14.67 + 85 =
  15. 15.51 + 25 =
  16. 16.53 + 35 =
  17. 17.77 + 73 =
  18. 18.78 + 12 =
  19. 19.33 + 26 =
  20. 20.35 + 65 =
  21. 21.54 + 55 =
  22. 22.70 + 85 =
  23. 23.33 + 46 =
  24. 24.66 + 87 =
  25. 25.43 + 37 =
  26. 26.28 + 66 =
  27. 27.85 + 39 =
  28. 28.31 + 22 =
  29. 29.77 + 69 =
  30. 30.86 + 77 =
  31. 31.83 + 86 =
  32. 32.71 + 46 =
  33. 33.84 + 33 =
  34. 34.61 + 47 =
  35. 35.57 + 29 =
  36. 36.79 + 63 =
  37. 37.32 + 79 =
  38. 38.67 + 51 =
  39. 39.78 + 83 =
  40. 40.84 + 36 =

Answer key

  1. 122
  2. 99
  3. 106
  4. 115
  5. 77
  6. 152
  7. 96
  8. 103
  9. 100
  10. 91
  11. 131
  12. 108
  13. 89
  14. 152
  15. 76
  16. 88
  17. 150
  18. 90
  19. 59
  20. 100
  21. 109
  22. 155
  23. 79
  24. 153
  25. 80
  26. 94
  27. 124
  28. 53
  29. 146
  30. 163
  31. 169
  32. 117
  33. 117
  34. 108
  35. 86
  36. 142
  37. 111
  38. 118
  39. 161
  40. 120

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