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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 467 · 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. 1.67 + 56 =
  2. 2.67 + 27 =
  3. 3.26 + 41 =
  4. 4.32 + 83 =
  5. 5.38 + 17 =
  6. 6.31 + 44 =
  7. 7.69 + 28 =
  8. 8.30 + 74 =
  9. 9.77 + 39 =
  10. 10.80 + 21 =
  11. 11.77 + 26 =
  12. 12.79 + 35 =
  13. 13.69 + 58 =
  14. 14.35 + 47 =
  15. 15.28 + 68 =
  16. 16.39 + 61 =
  17. 17.68 + 29 =
  18. 18.25 + 43 =
  19. 19.42 + 71 =
  20. 20.66 + 26 =
  21. 21.38 + 79 =
  22. 22.36 + 64 =
  23. 23.87 + 84 =
  24. 24.83 + 17 =
  25. 25.65 + 45 =
  26. 26.41 + 51 =
  27. 27.32 + 49 =
  28. 28.45 + 81 =
  29. 29.44 + 32 =
  30. 30.29 + 46 =
  31. 31.53 + 79 =
  32. 32.26 + 73 =
  33. 33.29 + 32 =
  34. 34.72 + 79 =
  35. 35.84 + 54 =
  36. 36.89 + 55 =
  37. 37.81 + 78 =
  38. 38.31 + 57 =
  39. 39.71 + 29 =
  40. 40.56 + 47 =

Answer key

  1. 123
  2. 94
  3. 67
  4. 115
  5. 55
  6. 75
  7. 97
  8. 104
  9. 116
  10. 101
  11. 103
  12. 114
  13. 127
  14. 82
  15. 96
  16. 100
  17. 97
  18. 68
  19. 113
  20. 92
  21. 117
  22. 100
  23. 171
  24. 100
  25. 110
  26. 92
  27. 81
  28. 126
  29. 76
  30. 75
  31. 132
  32. 99
  33. 61
  34. 151
  35. 138
  36. 144
  37. 159
  38. 88
  39. 100
  40. 103

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