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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 649 · 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 + 75 =
  2. 2.69 + 26 =
  3. 3.29 + 54 =
  4. 4.49 + 68 =
  5. 5.23 + 14 =
  6. 6.58 + 14 =
  7. 7.80 + 86 =
  8. 8.29 + 31 =
  9. 9.63 + 64 =
  10. 10.29 + 77 =
  11. 11.77 + 75 =
  12. 12.43 + 78 =
  13. 13.58 + 33 =
  14. 14.21 + 88 =
  15. 15.74 + 57 =
  16. 16.36 + 65 =
  17. 17.54 + 32 =
  18. 18.86 + 47 =
  19. 19.70 + 36 =
  20. 20.77 + 73 =
  21. 21.82 + 61 =
  22. 22.86 + 61 =
  23. 23.61 + 75 =
  24. 24.26 + 77 =
  25. 25.48 + 21 =
  26. 26.37 + 85 =
  27. 27.37 + 59 =
  28. 28.68 + 37 =
  29. 29.42 + 31 =
  30. 30.59 + 84 =
  31. 31.59 + 42 =
  32. 32.22 + 31 =
  33. 33.84 + 57 =
  34. 34.79 + 76 =
  35. 35.34 + 65 =
  36. 36.32 + 74 =
  37. 37.88 + 48 =
  38. 38.65 + 26 =
  39. 39.58 + 46 =
  40. 40.48 + 85 =

Answer key

  1. 114
  2. 95
  3. 83
  4. 117
  5. 37
  6. 72
  7. 166
  8. 60
  9. 127
  10. 106
  11. 152
  12. 121
  13. 91
  14. 109
  15. 131
  16. 101
  17. 86
  18. 133
  19. 106
  20. 150
  21. 143
  22. 147
  23. 136
  24. 103
  25. 69
  26. 122
  27. 96
  28. 105
  29. 73
  30. 143
  31. 101
  32. 53
  33. 141
  34. 155
  35. 99
  36. 106
  37. 136
  38. 91
  39. 104
  40. 133

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