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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 316 · 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. 1.22 + 46 =
  2. 2.82 + 42 =
  3. 3.28 + 84 =
  4. 4.59 + 31 =
  5. 5.37 + 26 =
  6. 6.54 + 22 =
  7. 7.61 + 21 =
  8. 8.83 + 87 =
  9. 9.21 + 59 =
  10. 10.65 + 47 =
  11. 11.46 + 19 =
  12. 12.21 + 61 =
  13. 13.77 + 38 =
  14. 14.30 + 47 =
  15. 15.41 + 69 =
  16. 16.81 + 25 =
  17. 17.24 + 24 =
  18. 18.68 + 75 =
  19. 19.21 + 41 =
  20. 20.63 + 87 =
  21. 21.68 + 32 =
  22. 22.56 + 57 =
  23. 23.62 + 17 =
  24. 24.49 + 41 =
  25. 25.44 + 21 =
  26. 26.51 + 14 =
  27. 27.33 + 37 =
  28. 28.37 + 17 =
  29. 29.21 + 62 =
  30. 30.73 + 51 =
  31. 31.64 + 51 =
  32. 32.47 + 21 =
  33. 33.56 + 83 =
  34. 34.68 + 42 =
  35. 35.88 + 77 =
  36. 36.47 + 69 =
  37. 37.53 + 34 =
  38. 38.35 + 31 =
  39. 39.31 + 39 =
  40. 40.71 + 37 =

Answer key

  1. 68
  2. 124
  3. 112
  4. 90
  5. 63
  6. 76
  7. 82
  8. 170
  9. 80
  10. 112
  11. 65
  12. 82
  13. 115
  14. 77
  15. 110
  16. 106
  17. 48
  18. 143
  19. 62
  20. 150
  21. 100
  22. 113
  23. 79
  24. 90
  25. 65
  26. 65
  27. 70
  28. 54
  29. 83
  30. 124
  31. 115
  32. 68
  33. 139
  34. 110
  35. 165
  36. 116
  37. 87
  38. 66
  39. 70
  40. 108

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