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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 275 · 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. 1.61 + 32 =
  2. 2.76 + 32 =
  3. 3.62 + 51 =
  4. 4.32 + 81 =
  5. 5.52 + 47 =
  6. 6.40 + 34 =
  7. 7.24 + 44 =
  8. 8.85 + 48 =
  9. 9.84 + 44 =
  10. 10.80 + 56 =
  11. 11.84 + 43 =
  12. 12.41 + 38 =
  13. 13.31 + 33 =
  14. 14.25 + 46 =
  15. 15.56 + 36 =
  16. 16.33 + 13 =
  17. 17.52 + 32 =
  18. 18.81 + 79 =
  19. 19.61 + 21 =
  20. 20.44 + 19 =
  21. 21.27 + 68 =
  22. 22.33 + 61 =
  23. 23.68 + 19 =
  24. 24.63 + 17 =
  25. 25.52 + 78 =
  26. 26.54 + 56 =
  27. 27.25 + 41 =
  28. 28.31 + 81 =
  29. 29.68 + 65 =
  30. 30.25 + 87 =
  31. 31.51 + 21 =
  32. 32.48 + 62 =
  33. 33.76 + 54 =
  34. 34.21 + 27 =
  35. 35.46 + 41 =
  36. 36.41 + 88 =
  37. 37.52 + 21 =
  38. 38.53 + 62 =
  39. 39.57 + 35 =
  40. 40.44 + 56 =

Answer key

  1. 93
  2. 108
  3. 113
  4. 113
  5. 99
  6. 74
  7. 68
  8. 133
  9. 128
  10. 136
  11. 127
  12. 79
  13. 64
  14. 71
  15. 92
  16. 46
  17. 84
  18. 160
  19. 82
  20. 63
  21. 95
  22. 94
  23. 87
  24. 80
  25. 130
  26. 110
  27. 66
  28. 112
  29. 133
  30. 112
  31. 72
  32. 110
  33. 130
  34. 48
  35. 87
  36. 129
  37. 73
  38. 115
  39. 92
  40. 100

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