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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 787 · 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. 1.45³ =
  2. 2.29³ =
  3. 3.71³ =
  4. 4.21³ =
  5. 5.38³ =
  6. 6.23³ =
  7. 7.71³ =
  8. 8.33³ =
  9. 9.19³ =
  10. 10.17³ =
  11. 11.84³ =
  12. 12.66³ =
  13. 13.21³ =
  14. 14.63³ =
  15. 15.53³ =
  16. 16.33³ =
  17. 17.34³ =
  18. 18.39³ =
  19. 19.61³ =
  20. 20.13³ =
  21. 21.51³ =
  22. 22.92³ =
  23. 23.27³ =
  24. 24.85³ =
  25. 25.39³ =
  26. 26.37³ =
  27. 27.25³ =
  28. 28.52³ =
  29. 29.28³ =
  30. 30.43³ =
  31. 31.38³ =
  32. 32.91³ =
  33. 33.39³ =
  34. 34.45³ =
  35. 35.59³ =
  36. 36.15³ =
  37. 37.89³ =
  38. 38.61³ =
  39. 39.15³ =
  40. 40.49³ =

Answer key

  1. 91125
  2. 24389
  3. 357911
  4. 9261
  5. 54872
  6. 12167
  7. 357911
  8. 35937
  9. 6859
  10. 4913
  11. 592704
  12. 287496
  13. 9261
  14. 250047
  15. 148877
  16. 35937
  17. 39304
  18. 59319
  19. 226981
  20. 2197
  21. 132651
  22. 778688
  23. 19683
  24. 614125
  25. 59319
  26. 50653
  27. 15625
  28. 140608
  29. 21952
  30. 79507
  31. 54872
  32. 753571
  33. 59319
  34. 91125
  35. 205379
  36. 3375
  37. 704969
  38. 226981
  39. 3375
  40. 117649

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