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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 792 · 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. 1.28 + 34 =
  2. 2.65 + 61 =
  3. 3.66 + 41 =
  4. 4.29 + 71 =
  5. 5.85 + 51 =
  6. 6.36 + 61 =
  7. 7.44 + 67 =
  8. 8.82 + 55 =
  9. 9.39 + 79 =
  10. 10.30 + 84 =
  11. 11.82 + 66 =
  12. 12.62 + 71 =
  13. 13.22 + 65 =
  14. 14.38 + 15 =
  15. 15.47 + 81 =
  16. 16.44 + 18 =
  17. 17.66 + 29 =
  18. 18.49 + 52 =
  19. 19.24 + 82 =
  20. 20.86 + 15 =
  21. 21.82 + 47 =
  22. 22.56 + 21 =
  23. 23.33 + 14 =
  24. 24.43 + 71 =
  25. 25.45 + 73 =
  26. 26.77 + 39 =
  27. 27.76 + 89 =
  28. 28.68 + 67 =
  29. 29.55 + 82 =
  30. 30.47 + 19 =
  31. 31.64 + 78 =
  32. 32.41 + 61 =
  33. 33.41 + 13 =
  34. 34.24 + 45 =
  35. 35.25 + 29 =
  36. 36.63 + 78 =
  37. 37.22 + 41 =
  38. 38.60 + 34 =
  39. 39.77 + 32 =
  40. 40.86 + 41 =

Answer key

  1. 62
  2. 126
  3. 107
  4. 100
  5. 136
  6. 97
  7. 111
  8. 137
  9. 118
  10. 114
  11. 148
  12. 133
  13. 87
  14. 53
  15. 128
  16. 62
  17. 95
  18. 101
  19. 106
  20. 101
  21. 129
  22. 77
  23. 47
  24. 114
  25. 118
  26. 116
  27. 165
  28. 135
  29. 137
  30. 66
  31. 142
  32. 102
  33. 54
  34. 69
  35. 54
  36. 141
  37. 63
  38. 94
  39. 109
  40. 127

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