← 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 589 · 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. 1.63 + 66 =
  2. 2.35 + 39 =
  3. 3.40 + 81 =
  4. 4.47 + 25 =
  5. 5.52 + 74 =
  6. 6.72 + 31 =
  7. 7.78 + 61 =
  8. 8.33 + 64 =
  9. 9.72 + 81 =
  10. 10.41 + 55 =
  11. 11.72 + 48 =
  12. 12.65 + 12 =
  13. 13.69 + 81 =
  14. 14.71 + 57 =
  15. 15.29 + 58 =
  16. 16.67 + 29 =
  17. 17.45 + 13 =
  18. 18.45 + 78 =
  19. 19.44 + 25 =
  20. 20.34 + 64 =
  21. 21.33 + 25 =
  22. 22.54 + 33 =
  23. 23.75 + 15 =
  24. 24.72 + 61 =
  25. 25.24 + 44 =
  26. 26.65 + 41 =
  27. 27.74 + 23 =
  28. 28.84 + 13 =
  29. 29.34 + 61 =
  30. 30.57 + 49 =
  31. 31.66 + 39 =
  32. 32.25 + 69 =
  33. 33.77 + 54 =
  34. 34.45 + 26 =
  35. 35.51 + 73 =
  36. 36.43 + 59 =
  37. 37.34 + 68 =
  38. 38.89 + 53 =
  39. 39.68 + 16 =
  40. 40.38 + 89 =

Answer key

  1. 129
  2. 74
  3. 121
  4. 72
  5. 126
  6. 103
  7. 139
  8. 97
  9. 153
  10. 96
  11. 120
  12. 77
  13. 150
  14. 128
  15. 87
  16. 96
  17. 58
  18. 123
  19. 69
  20. 98
  21. 58
  22. 87
  23. 90
  24. 133
  25. 68
  26. 106
  27. 97
  28. 97
  29. 95
  30. 106
  31. 105
  32. 94
  33. 131
  34. 71
  35. 124
  36. 102
  37. 102
  38. 142
  39. 84
  40. 127

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