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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 193 · 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. 1.80 + 12 =
  2. 2.40 + 19 =
  3. 3.40 + 14 =
  4. 4.87 + 52 =
  5. 5.73 + 22 =
  6. 6.68 + 47 =
  7. 7.44 + 82 =
  8. 8.67 + 12 =
  9. 9.22 + 26 =
  10. 10.51 + 51 =
  11. 11.38 + 26 =
  12. 12.53 + 61 =
  13. 13.73 + 34 =
  14. 14.66 + 24 =
  15. 15.40 + 31 =
  16. 16.42 + 69 =
  17. 17.52 + 47 =
  18. 18.47 + 44 =
  19. 19.80 + 56 =
  20. 20.77 + 85 =
  21. 21.28 + 81 =
  22. 22.31 + 66 =
  23. 23.71 + 37 =
  24. 24.57 + 82 =
  25. 25.77 + 58 =
  26. 26.38 + 47 =
  27. 27.37 + 57 =
  28. 28.26 + 55 =
  29. 29.62 + 56 =
  30. 30.45 + 54 =
  31. 31.32 + 41 =
  32. 32.21 + 75 =
  33. 33.38 + 85 =
  34. 34.58 + 53 =
  35. 35.52 + 29 =
  36. 36.49 + 48 =
  37. 37.42 + 35 =
  38. 38.21 + 64 =
  39. 39.48 + 57 =
  40. 40.75 + 31 =

Answer key

  1. 92
  2. 59
  3. 54
  4. 139
  5. 95
  6. 115
  7. 126
  8. 79
  9. 48
  10. 102
  11. 64
  12. 114
  13. 107
  14. 90
  15. 71
  16. 111
  17. 99
  18. 91
  19. 136
  20. 162
  21. 109
  22. 97
  23. 108
  24. 139
  25. 135
  26. 85
  27. 94
  28. 81
  29. 118
  30. 99
  31. 73
  32. 96
  33. 123
  34. 111
  35. 81
  36. 97
  37. 77
  38. 85
  39. 105
  40. 106

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