← 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 723 · 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. 1.39 + 12 =
  2. 2.47 + 15 =
  3. 3.65 + 21 =
  4. 4.87 + 21 =
  5. 5.45 + 21 =
  6. 6.40 + 27 =
  7. 7.42 + 19 =
  8. 8.58 + 32 =
  9. 9.86 + 41 =
  10. 10.85 + 12 =
  11. 11.84 + 16 =
  12. 12.42 + 23 =
  13. 13.48 + 46 =
  14. 14.29 + 62 =
  15. 15.50 + 52 =
  16. 16.24 + 51 =
  17. 17.80 + 69 =
  18. 18.29 + 79 =
  19. 19.27 + 54 =
  20. 20.76 + 85 =
  21. 21.87 + 81 =
  22. 22.31 + 17 =
  23. 23.89 + 58 =
  24. 24.79 + 73 =
  25. 25.57 + 35 =
  26. 26.38 + 65 =
  27. 27.72 + 21 =
  28. 28.28 + 87 =
  29. 29.49 + 41 =
  30. 30.52 + 58 =
  31. 31.36 + 43 =
  32. 32.43 + 58 =
  33. 33.50 + 78 =
  34. 34.35 + 66 =
  35. 35.36 + 89 =
  36. 36.25 + 37 =
  37. 37.67 + 52 =
  38. 38.59 + 54 =
  39. 39.42 + 88 =
  40. 40.69 + 63 =

Answer key

  1. 51
  2. 62
  3. 86
  4. 108
  5. 66
  6. 67
  7. 61
  8. 90
  9. 127
  10. 97
  11. 100
  12. 65
  13. 94
  14. 91
  15. 102
  16. 75
  17. 149
  18. 108
  19. 81
  20. 161
  21. 168
  22. 48
  23. 147
  24. 152
  25. 92
  26. 103
  27. 93
  28. 115
  29. 90
  30. 110
  31. 79
  32. 101
  33. 128
  34. 101
  35. 125
  36. 62
  37. 119
  38. 113
  39. 130
  40. 132

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