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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 619 · 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. 1.61³ =
  2. 2.77³ =
  3. 3.71³ =
  4. 4.39³ =
  5. 5.98³ =
  6. 6.91³ =
  7. 7.13³ =
  8. 8.27³ =
  9. 9.81³ =
  10. 10.85³ =
  11. 11.99³ =
  12. 12.85³ =
  13. 13.82³ =
  14. 14.63³ =
  15. 15.78³ =
  16. 16.69³ =
  17. 17.91³ =
  18. 18.16³ =
  19. 19.48³ =
  20. 20.28³ =
  21. 21.61³ =
  22. 22.31³ =
  23. 23.13³ =
  24. 24.56³ =
  25. 25.49³ =
  26. 26.81³ =
  27. 27.83³ =
  28. 28.46³ =
  29. 29.32³ =
  30. 30.91³ =
  31. 31.98³ =
  32. 32.81³ =
  33. 33.77³ =
  34. 34.24³ =
  35. 35.18³ =
  36. 36.15³ =
  37. 37.31³ =
  38. 38.64³ =
  39. 39.12³ =
  40. 40.43³ =

Answer key

  1. 226981
  2. 456533
  3. 357911
  4. 59319
  5. 941192
  6. 753571
  7. 2197
  8. 19683
  9. 531441
  10. 614125
  11. 970299
  12. 614125
  13. 551368
  14. 250047
  15. 474552
  16. 328509
  17. 753571
  18. 4096
  19. 110592
  20. 21952
  21. 226981
  22. 29791
  23. 2197
  24. 175616
  25. 117649
  26. 531441
  27. 571787
  28. 97336
  29. 32768
  30. 753571
  31. 941192
  32. 531441
  33. 456533
  34. 13824
  35. 5832
  36. 3375
  37. 29791
  38. 262144
  39. 1728
  40. 79507

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