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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 62 · 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. 1.46 + 41 =
  2. 2.21 + 31 =
  3. 3.77 + 35 =
  4. 4.37 + 73 =
  5. 5.41 + 12 =
  6. 6.33 + 14 =
  7. 7.89 + 63 =
  8. 8.32 + 57 =
  9. 9.69 + 16 =
  10. 10.23 + 76 =
  11. 11.44 + 39 =
  12. 12.40 + 41 =
  13. 13.79 + 43 =
  14. 14.34 + 85 =
  15. 15.42 + 38 =
  16. 16.55 + 61 =
  17. 17.28 + 42 =
  18. 18.38 + 27 =
  19. 19.22 + 58 =
  20. 20.65 + 81 =
  21. 21.84 + 17 =
  22. 22.72 + 18 =
  23. 23.78 + 37 =
  24. 24.41 + 14 =
  25. 25.60 + 62 =
  26. 26.57 + 26 =
  27. 27.66 + 73 =
  28. 28.66 + 71 =
  29. 29.47 + 37 =
  30. 30.31 + 69 =
  31. 31.38 + 37 =
  32. 32.84 + 64 =
  33. 33.84 + 37 =
  34. 34.22 + 75 =
  35. 35.31 + 77 =
  36. 36.21 + 75 =
  37. 37.26 + 58 =
  38. 38.87 + 55 =
  39. 39.76 + 61 =
  40. 40.21 + 49 =

Answer key

  1. 87
  2. 52
  3. 112
  4. 110
  5. 53
  6. 47
  7. 152
  8. 89
  9. 85
  10. 99
  11. 83
  12. 81
  13. 122
  14. 119
  15. 80
  16. 116
  17. 70
  18. 65
  19. 80
  20. 146
  21. 101
  22. 90
  23. 115
  24. 55
  25. 122
  26. 83
  27. 139
  28. 137
  29. 84
  30. 100
  31. 75
  32. 148
  33. 121
  34. 97
  35. 108
  36. 96
  37. 84
  38. 142
  39. 137
  40. 70

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