← Add 2-digit numbers left to right lesson New set →

Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 14 · 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. 1.21 + 21 =
  2. 2.72 + 81 =
  3. 3.56 + 77 =
  4. 4.59 + 13 =
  5. 5.44 + 67 =
  6. 6.40 + 59 =
  7. 7.73 + 48 =
  8. 8.31 + 38 =
  9. 9.66 + 29 =
  10. 10.28 + 21 =
  11. 11.72 + 36 =
  12. 12.27 + 38 =
  13. 13.53 + 59 =
  14. 14.26 + 45 =
  15. 15.79 + 71 =
  16. 16.77 + 41 =
  17. 17.61 + 21 =
  18. 18.75 + 71 =
  19. 19.42 + 85 =
  20. 20.38 + 45 =
  21. 21.32 + 14 =
  22. 22.31 + 54 =
  23. 23.83 + 39 =
  24. 24.71 + 52 =
  25. 25.40 + 63 =
  26. 26.56 + 33 =
  27. 27.42 + 21 =
  28. 28.38 + 24 =
  29. 29.70 + 18 =
  30. 30.26 + 36 =
  31. 31.83 + 68 =
  32. 32.36 + 27 =
  33. 33.79 + 81 =
  34. 34.80 + 41 =
  35. 35.72 + 51 =
  36. 36.74 + 19 =
  37. 37.86 + 57 =
  38. 38.22 + 89 =
  39. 39.89 + 38 =
  40. 40.43 + 43 =

Answer key

  1. 42
  2. 153
  3. 133
  4. 72
  5. 111
  6. 99
  7. 121
  8. 69
  9. 95
  10. 49
  11. 108
  12. 65
  13. 112
  14. 71
  15. 150
  16. 118
  17. 82
  18. 146
  19. 127
  20. 83
  21. 46
  22. 85
  23. 122
  24. 123
  25. 103
  26. 89
  27. 63
  28. 62
  29. 88
  30. 62
  31. 151
  32. 63
  33. 160
  34. 121
  35. 123
  36. 93
  37. 143
  38. 111
  39. 127
  40. 86

Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths