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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 601 · 40 sums
TalentJR

The trick (Anurupyena): Top row: a³, a²b, ab², b³ (each term is the one before × b ÷ a). Under the two middle terms write double of them, and add: a³ | 3a²b | 3ab² | b³. Combine from the right with carries.

NameDateTime takenScore ___ / 40
  1. 1.75³ =
  2. 2.18³ =
  3. 3.13³ =
  4. 4.82³ =
  5. 5.31³ =
  6. 6.49³ =
  7. 7.91³ =
  8. 8.93³ =
  9. 9.19³ =
  10. 10.91³ =
  11. 11.33³ =
  12. 12.71³ =
  13. 13.95³ =
  14. 14.65³ =
  15. 15.92³ =
  16. 16.29³ =
  17. 17.29³ =
  18. 18.14³ =
  19. 19.19³ =
  20. 20.15³ =
  21. 21.41³ =
  22. 22.33³ =
  23. 23.65³ =
  24. 24.41³ =
  25. 25.19³ =
  26. 26.37³ =
  27. 27.21³ =
  28. 28.42³ =
  29. 29.68³ =
  30. 30.29³ =
  31. 31.31³ =
  32. 32.71³ =
  33. 33.62³ =
  34. 34.81³ =
  35. 35.21³ =
  36. 36.55³ =
  37. 37.86³ =
  38. 38.81³ =
  39. 39.29³ =
  40. 40.21³ =

Answer key

  1. 421875
  2. 5832
  3. 2197
  4. 551368
  5. 29791
  6. 117649
  7. 753571
  8. 804357
  9. 6859
  10. 753571
  11. 35937
  12. 357911
  13. 857375
  14. 274625
  15. 778688
  16. 24389
  17. 24389
  18. 2744
  19. 6859
  20. 3375
  21. 68921
  22. 35937
  23. 274625
  24. 68921
  25. 6859
  26. 50653
  27. 9261
  28. 74088
  29. 314432
  30. 24389
  31. 29791
  32. 357911
  33. 238328
  34. 531441
  35. 9261
  36. 166375
  37. 636056
  38. 531441
  39. 24389
  40. 9261

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