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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 20 · 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. 1.78³ =
  2. 2.32³ =
  3. 3.39³ =
  4. 4.29³ =
  5. 5.83³ =
  6. 6.83³ =
  7. 7.87³ =
  8. 8.13³ =
  9. 9.54³ =
  10. 10.65³ =
  11. 11.63³ =
  12. 12.43³ =
  13. 13.58³ =
  14. 14.26³ =
  15. 15.44³ =
  16. 16.84³ =
  17. 17.12³ =
  18. 18.58³ =
  19. 19.83³ =
  20. 20.15³ =
  21. 21.54³ =
  22. 22.28³ =
  23. 23.54³ =
  24. 24.46³ =
  25. 25.28³ =
  26. 26.81³ =
  27. 27.49³ =
  28. 28.51³ =
  29. 29.14³ =
  30. 30.71³ =
  31. 31.23³ =
  32. 32.21³ =
  33. 33.81³ =
  34. 34.91³ =
  35. 35.93³ =
  36. 36.89³ =
  37. 37.24³ =
  38. 38.34³ =
  39. 39.51³ =
  40. 40.36³ =

Answer key

  1. 474552
  2. 32768
  3. 59319
  4. 24389
  5. 571787
  6. 571787
  7. 658503
  8. 2197
  9. 157464
  10. 274625
  11. 250047
  12. 79507
  13. 195112
  14. 17576
  15. 85184
  16. 592704
  17. 1728
  18. 195112
  19. 571787
  20. 3375
  21. 157464
  22. 21952
  23. 157464
  24. 97336
  25. 21952
  26. 531441
  27. 117649
  28. 132651
  29. 2744
  30. 357911
  31. 12167
  32. 9261
  33. 531441
  34. 753571
  35. 804357
  36. 704969
  37. 13824
  38. 39304
  39. 132651
  40. 46656

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