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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 246 · 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. 1.74 + 87 =
  2. 2.37 + 35 =
  3. 3.26 + 37 =
  4. 4.37 + 29 =
  5. 5.55 + 41 =
  6. 6.73 + 75 =
  7. 7.62 + 14 =
  8. 8.42 + 54 =
  9. 9.85 + 72 =
  10. 10.65 + 81 =
  11. 11.41 + 39 =
  12. 12.82 + 13 =
  13. 13.29 + 77 =
  14. 14.32 + 41 =
  15. 15.65 + 14 =
  16. 16.59 + 75 =
  17. 17.31 + 71 =
  18. 18.26 + 42 =
  19. 19.55 + 25 =
  20. 20.73 + 85 =
  21. 21.48 + 51 =
  22. 22.45 + 33 =
  23. 23.59 + 22 =
  24. 24.54 + 22 =
  25. 25.34 + 56 =
  26. 26.37 + 86 =
  27. 27.36 + 78 =
  28. 28.72 + 71 =
  29. 29.32 + 15 =
  30. 30.40 + 61 =
  31. 31.29 + 61 =
  32. 32.34 + 23 =
  33. 33.79 + 14 =
  34. 34.70 + 84 =
  35. 35.75 + 19 =
  36. 36.40 + 37 =
  37. 37.36 + 49 =
  38. 38.73 + 23 =
  39. 39.26 + 34 =
  40. 40.35 + 17 =

Answer key

  1. 161
  2. 72
  3. 63
  4. 66
  5. 96
  6. 148
  7. 76
  8. 96
  9. 157
  10. 146
  11. 80
  12. 95
  13. 106
  14. 73
  15. 79
  16. 134
  17. 102
  18. 68
  19. 80
  20. 158
  21. 99
  22. 78
  23. 81
  24. 76
  25. 90
  26. 123
  27. 114
  28. 143
  29. 47
  30. 101
  31. 90
  32. 57
  33. 93
  34. 154
  35. 94
  36. 77
  37. 85
  38. 96
  39. 60
  40. 52

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