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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 94 · 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. 1.63 + 24 =
  2. 2.52 + 59 =
  3. 3.39 + 25 =
  4. 4.36 + 59 =
  5. 5.85 + 29 =
  6. 6.22 + 65 =
  7. 7.23 + 86 =
  8. 8.35 + 51 =
  9. 9.78 + 37 =
  10. 10.51 + 69 =
  11. 11.86 + 14 =
  12. 12.22 + 51 =
  13. 13.28 + 57 =
  14. 14.59 + 81 =
  15. 15.81 + 31 =
  16. 16.64 + 31 =
  17. 17.47 + 61 =
  18. 18.30 + 81 =
  19. 19.37 + 45 =
  20. 20.85 + 39 =
  21. 21.47 + 85 =
  22. 22.55 + 12 =
  23. 23.34 + 35 =
  24. 24.51 + 31 =
  25. 25.39 + 61 =
  26. 26.41 + 16 =
  27. 27.26 + 24 =
  28. 28.62 + 74 =
  29. 29.48 + 81 =
  30. 30.66 + 67 =
  31. 31.66 + 21 =
  32. 32.65 + 19 =
  33. 33.83 + 74 =
  34. 34.67 + 13 =
  35. 35.81 + 35 =
  36. 36.22 + 22 =
  37. 37.79 + 39 =
  38. 38.52 + 32 =
  39. 39.27 + 65 =
  40. 40.45 + 78 =

Answer key

  1. 87
  2. 111
  3. 64
  4. 95
  5. 114
  6. 87
  7. 109
  8. 86
  9. 115
  10. 120
  11. 100
  12. 73
  13. 85
  14. 140
  15. 112
  16. 95
  17. 108
  18. 111
  19. 82
  20. 124
  21. 132
  22. 67
  23. 69
  24. 82
  25. 100
  26. 57
  27. 50
  28. 136
  29. 129
  30. 133
  31. 87
  32. 84
  33. 157
  34. 80
  35. 116
  36. 44
  37. 118
  38. 84
  39. 92
  40. 123

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