← 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 309 · 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. 1.75 + 25 =
  2. 2.71 + 65 =
  3. 3.56 + 13 =
  4. 4.77 + 81 =
  5. 5.24 + 28 =
  6. 6.30 + 63 =
  7. 7.38 + 58 =
  8. 8.22 + 46 =
  9. 9.36 + 41 =
  10. 10.42 + 16 =
  11. 11.57 + 42 =
  12. 12.23 + 23 =
  13. 13.89 + 21 =
  14. 14.24 + 66 =
  15. 15.36 + 43 =
  16. 16.85 + 27 =
  17. 17.48 + 82 =
  18. 18.86 + 87 =
  19. 19.84 + 28 =
  20. 20.49 + 26 =
  21. 21.33 + 72 =
  22. 22.60 + 51 =
  23. 23.55 + 33 =
  24. 24.31 + 67 =
  25. 25.47 + 48 =
  26. 26.42 + 27 =
  27. 27.23 + 49 =
  28. 28.22 + 16 =
  29. 29.23 + 19 =
  30. 30.47 + 17 =
  31. 31.88 + 63 =
  32. 32.32 + 51 =
  33. 33.31 + 42 =
  34. 34.64 + 35 =
  35. 35.81 + 18 =
  36. 36.76 + 36 =
  37. 37.47 + 33 =
  38. 38.59 + 19 =
  39. 39.75 + 76 =
  40. 40.88 + 54 =

Answer key

  1. 100
  2. 136
  3. 69
  4. 158
  5. 52
  6. 93
  7. 96
  8. 68
  9. 77
  10. 58
  11. 99
  12. 46
  13. 110
  14. 90
  15. 79
  16. 112
  17. 130
  18. 173
  19. 112
  20. 75
  21. 105
  22. 111
  23. 88
  24. 98
  25. 95
  26. 69
  27. 72
  28. 38
  29. 42
  30. 64
  31. 151
  32. 83
  33. 73
  34. 99
  35. 99
  36. 112
  37. 80
  38. 78
  39. 151
  40. 142

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