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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 491 · 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. 1.47³ =
  2. 2.29³ =
  3. 3.51³ =
  4. 4.69³ =
  5. 5.71³ =
  6. 6.46³ =
  7. 7.97³ =
  8. 8.54³ =
  9. 9.66³ =
  10. 10.61³ =
  11. 11.35³ =
  12. 12.47³ =
  13. 13.28³ =
  14. 14.77³ =
  15. 15.69³ =
  16. 16.62³ =
  17. 17.53³ =
  18. 18.92³ =
  19. 19.71³ =
  20. 20.91³ =
  21. 21.39³ =
  22. 22.29³ =
  23. 23.58³ =
  24. 24.61³ =
  25. 25.34³ =
  26. 26.54³ =
  27. 27.14³ =
  28. 28.36³ =
  29. 29.71³ =
  30. 30.52³ =
  31. 31.27³ =
  32. 32.39³ =
  33. 33.24³ =
  34. 34.32³ =
  35. 35.62³ =
  36. 36.63³ =
  37. 37.63³ =
  38. 38.51³ =
  39. 39.17³ =
  40. 40.84³ =

Answer key

  1. 103823
  2. 24389
  3. 132651
  4. 328509
  5. 357911
  6. 97336
  7. 912673
  8. 157464
  9. 287496
  10. 226981
  11. 42875
  12. 103823
  13. 21952
  14. 456533
  15. 328509
  16. 238328
  17. 148877
  18. 778688
  19. 357911
  20. 753571
  21. 59319
  22. 24389
  23. 195112
  24. 226981
  25. 39304
  26. 157464
  27. 2744
  28. 46656
  29. 357911
  30. 140608
  31. 19683
  32. 59319
  33. 13824
  34. 32768
  35. 238328
  36. 250047
  37. 250047
  38. 132651
  39. 4913
  40. 592704

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