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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 67 · 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. 1.76³ =
  2. 2.31³ =
  3. 3.55³ =
  4. 4.55³ =
  5. 5.61³ =
  6. 6.35³ =
  7. 7.84³ =
  8. 8.21³ =
  9. 9.46³ =
  10. 10.61³ =
  11. 11.58³ =
  12. 12.24³ =
  13. 13.16³ =
  14. 14.29³ =
  15. 15.81³ =
  16. 16.51³ =
  17. 17.42³ =
  18. 18.19³ =
  19. 19.99³ =
  20. 20.13³ =
  21. 21.89³ =
  22. 22.89³ =
  23. 23.46³ =
  24. 24.89³ =
  25. 25.83³ =
  26. 26.61³ =
  27. 27.35³ =
  28. 28.63³ =
  29. 29.17³ =
  30. 30.34³ =
  31. 31.64³ =
  32. 32.33³ =
  33. 33.94³ =
  34. 34.91³ =
  35. 35.73³ =
  36. 36.63³ =
  37. 37.43³ =
  38. 38.71³ =
  39. 39.51³ =
  40. 40.81³ =

Answer key

  1. 438976
  2. 29791
  3. 166375
  4. 166375
  5. 226981
  6. 42875
  7. 592704
  8. 9261
  9. 97336
  10. 226981
  11. 195112
  12. 13824
  13. 4096
  14. 24389
  15. 531441
  16. 132651
  17. 74088
  18. 6859
  19. 970299
  20. 2197
  21. 704969
  22. 704969
  23. 97336
  24. 704969
  25. 571787
  26. 226981
  27. 42875
  28. 250047
  29. 4913
  30. 39304
  31. 262144
  32. 35937
  33. 830584
  34. 753571
  35. 389017
  36. 250047
  37. 79507
  38. 357911
  39. 132651
  40. 531441

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