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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 593 · 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. 1.44 + 54 =
  2. 2.54 + 49 =
  3. 3.54 + 78 =
  4. 4.42 + 81 =
  5. 5.84 + 21 =
  6. 6.29 + 76 =
  7. 7.73 + 69 =
  8. 8.47 + 74 =
  9. 9.56 + 49 =
  10. 10.44 + 32 =
  11. 11.74 + 21 =
  12. 12.64 + 81 =
  13. 13.69 + 54 =
  14. 14.41 + 52 =
  15. 15.51 + 29 =
  16. 16.57 + 33 =
  17. 17.40 + 71 =
  18. 18.40 + 82 =
  19. 19.21 + 44 =
  20. 20.62 + 58 =
  21. 21.37 + 32 =
  22. 22.29 + 33 =
  23. 23.41 + 42 =
  24. 24.29 + 42 =
  25. 25.62 + 13 =
  26. 26.25 + 23 =
  27. 27.59 + 73 =
  28. 28.59 + 31 =
  29. 29.37 + 15 =
  30. 30.25 + 42 =
  31. 31.75 + 48 =
  32. 32.47 + 13 =
  33. 33.84 + 86 =
  34. 34.87 + 58 =
  35. 35.86 + 33 =
  36. 36.72 + 82 =
  37. 37.56 + 29 =
  38. 38.80 + 44 =
  39. 39.28 + 34 =
  40. 40.67 + 31 =

Answer key

  1. 98
  2. 103
  3. 132
  4. 123
  5. 105
  6. 105
  7. 142
  8. 121
  9. 105
  10. 76
  11. 95
  12. 145
  13. 123
  14. 93
  15. 80
  16. 90
  17. 111
  18. 122
  19. 65
  20. 120
  21. 69
  22. 62
  23. 83
  24. 71
  25. 75
  26. 48
  27. 132
  28. 90
  29. 52
  30. 67
  31. 123
  32. 60
  33. 170
  34. 145
  35. 119
  36. 154
  37. 85
  38. 124
  39. 62
  40. 98

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