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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 729 · 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. 1.97³ =
  2. 2.85³ =
  3. 3.99³ =
  4. 4.47³ =
  5. 5.46³ =
  6. 6.36³ =
  7. 7.53³ =
  8. 8.18³ =
  9. 9.78³ =
  10. 10.85³ =
  11. 11.17³ =
  12. 12.71³ =
  13. 13.76³ =
  14. 14.43³ =
  15. 15.37³ =
  16. 16.56³ =
  17. 17.21³ =
  18. 18.81³ =
  19. 19.44³ =
  20. 20.31³ =
  21. 21.21³ =
  22. 22.43³ =
  23. 23.24³ =
  24. 24.43³ =
  25. 25.61³ =
  26. 26.82³ =
  27. 27.25³ =
  28. 28.61³ =
  29. 29.51³ =
  30. 30.71³ =
  31. 31.31³ =
  32. 32.21³ =
  33. 33.91³ =
  34. 34.84³ =
  35. 35.32³ =
  36. 36.66³ =
  37. 37.61³ =
  38. 38.23³ =
  39. 39.89³ =
  40. 40.26³ =

Answer key

  1. 912673
  2. 614125
  3. 970299
  4. 103823
  5. 97336
  6. 46656
  7. 148877
  8. 5832
  9. 474552
  10. 614125
  11. 4913
  12. 357911
  13. 438976
  14. 79507
  15. 50653
  16. 175616
  17. 9261
  18. 531441
  19. 85184
  20. 29791
  21. 9261
  22. 79507
  23. 13824
  24. 79507
  25. 226981
  26. 551368
  27. 15625
  28. 226981
  29. 132651
  30. 357911
  31. 29791
  32. 9261
  33. 753571
  34. 592704
  35. 32768
  36. 287496
  37. 226981
  38. 12167
  39. 704969
  40. 17576

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