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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 688 · 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. 1.81³ =
  2. 2.85³ =
  3. 3.62³ =
  4. 4.15³ =
  5. 5.77³ =
  6. 6.71³ =
  7. 7.16³ =
  8. 8.12³ =
  9. 9.71³ =
  10. 10.37³ =
  11. 11.29³ =
  12. 12.22³ =
  13. 13.84³ =
  14. 14.84³ =
  15. 15.27³ =
  16. 16.63³ =
  17. 17.61³ =
  18. 18.88³ =
  19. 19.22³ =
  20. 20.45³ =
  21. 21.89³ =
  22. 22.94³ =
  23. 23.89³ =
  24. 24.74³ =
  25. 25.81³ =
  26. 26.96³ =
  27. 27.97³ =
  28. 28.91³ =
  29. 29.72³ =
  30. 30.53³ =
  31. 31.65³ =
  32. 32.94³ =
  33. 33.22³ =
  34. 34.53³ =
  35. 35.31³ =
  36. 36.21³ =
  37. 37.57³ =
  38. 38.31³ =
  39. 39.46³ =
  40. 40.35³ =

Answer key

  1. 531441
  2. 614125
  3. 238328
  4. 3375
  5. 456533
  6. 357911
  7. 4096
  8. 1728
  9. 357911
  10. 50653
  11. 24389
  12. 10648
  13. 592704
  14. 592704
  15. 19683
  16. 250047
  17. 226981
  18. 681472
  19. 10648
  20. 91125
  21. 704969
  22. 830584
  23. 704969
  24. 405224
  25. 531441
  26. 884736
  27. 912673
  28. 753571
  29. 373248
  30. 148877
  31. 274625
  32. 830584
  33. 10648
  34. 148877
  35. 29791
  36. 9261
  37. 185193
  38. 29791
  39. 97336
  40. 42875

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