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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 795 · 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. 1.34 + 67 =
  2. 2.78 + 29 =
  3. 3.53 + 39 =
  4. 4.23 + 31 =
  5. 5.29 + 14 =
  6. 6.65 + 68 =
  7. 7.38 + 73 =
  8. 8.28 + 51 =
  9. 9.81 + 33 =
  10. 10.38 + 19 =
  11. 11.42 + 89 =
  12. 12.40 + 69 =
  13. 13.22 + 47 =
  14. 14.55 + 46 =
  15. 15.36 + 79 =
  16. 16.63 + 82 =
  17. 17.45 + 24 =
  18. 18.25 + 67 =
  19. 19.31 + 85 =
  20. 20.36 + 31 =
  21. 21.52 + 15 =
  22. 22.47 + 63 =
  23. 23.62 + 66 =
  24. 24.72 + 81 =
  25. 25.33 + 42 =
  26. 26.35 + 26 =
  27. 27.54 + 34 =
  28. 28.47 + 47 =
  29. 29.33 + 13 =
  30. 30.22 + 87 =
  31. 31.88 + 41 =
  32. 32.60 + 81 =
  33. 33.42 + 12 =
  34. 34.65 + 82 =
  35. 35.83 + 86 =
  36. 36.67 + 27 =
  37. 37.84 + 87 =
  38. 38.61 + 42 =
  39. 39.41 + 53 =
  40. 40.26 + 63 =

Answer key

  1. 101
  2. 107
  3. 92
  4. 54
  5. 43
  6. 133
  7. 111
  8. 79
  9. 114
  10. 57
  11. 131
  12. 109
  13. 69
  14. 101
  15. 115
  16. 145
  17. 69
  18. 92
  19. 116
  20. 67
  21. 67
  22. 110
  23. 128
  24. 153
  25. 75
  26. 61
  27. 88
  28. 94
  29. 46
  30. 109
  31. 129
  32. 141
  33. 54
  34. 147
  35. 169
  36. 94
  37. 171
  38. 103
  39. 94
  40. 89

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