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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 296 · 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. 1.39 + 25 =
  2. 2.62 + 23 =
  3. 3.24 + 71 =
  4. 4.56 + 48 =
  5. 5.40 + 26 =
  6. 6.78 + 76 =
  7. 7.24 + 48 =
  8. 8.33 + 37 =
  9. 9.75 + 32 =
  10. 10.56 + 75 =
  11. 11.78 + 61 =
  12. 12.88 + 42 =
  13. 13.29 + 38 =
  14. 14.28 + 81 =
  15. 15.84 + 75 =
  16. 16.71 + 18 =
  17. 17.39 + 34 =
  18. 18.37 + 46 =
  19. 19.82 + 76 =
  20. 20.24 + 67 =
  21. 21.65 + 48 =
  22. 22.43 + 69 =
  23. 23.89 + 72 =
  24. 24.78 + 26 =
  25. 25.25 + 23 =
  26. 26.62 + 18 =
  27. 27.67 + 24 =
  28. 28.28 + 15 =
  29. 29.78 + 55 =
  30. 30.88 + 46 =
  31. 31.79 + 67 =
  32. 32.51 + 44 =
  33. 33.38 + 41 =
  34. 34.81 + 47 =
  35. 35.26 + 54 =
  36. 36.71 + 13 =
  37. 37.48 + 17 =
  38. 38.72 + 52 =
  39. 39.50 + 58 =
  40. 40.69 + 52 =

Answer key

  1. 64
  2. 85
  3. 95
  4. 104
  5. 66
  6. 154
  7. 72
  8. 70
  9. 107
  10. 131
  11. 139
  12. 130
  13. 67
  14. 109
  15. 159
  16. 89
  17. 73
  18. 83
  19. 158
  20. 91
  21. 113
  22. 112
  23. 161
  24. 104
  25. 48
  26. 80
  27. 91
  28. 43
  29. 133
  30. 134
  31. 146
  32. 95
  33. 79
  34. 128
  35. 80
  36. 84
  37. 65
  38. 124
  39. 108
  40. 121

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