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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 682 · 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. 1.81³ =
  2. 2.79³ =
  3. 3.99³ =
  4. 4.95³ =
  5. 5.62³ =
  6. 6.94³ =
  7. 7.87³ =
  8. 8.22³ =
  9. 9.81³ =
  10. 10.51³ =
  11. 11.77³ =
  12. 12.56³ =
  13. 13.44³ =
  14. 14.12³ =
  15. 15.83³ =
  16. 16.83³ =
  17. 17.53³ =
  18. 18.91³ =
  19. 19.14³ =
  20. 20.15³ =
  21. 21.16³ =
  22. 22.91³ =
  23. 23.71³ =
  24. 24.63³ =
  25. 25.32³ =
  26. 26.68³ =
  27. 27.67³ =
  28. 28.66³ =
  29. 29.69³ =
  30. 30.83³ =
  31. 31.23³ =
  32. 32.61³ =
  33. 33.92³ =
  34. 34.34³ =
  35. 35.59³ =
  36. 36.41³ =
  37. 37.89³ =
  38. 38.24³ =
  39. 39.82³ =
  40. 40.47³ =

Answer key

  1. 531441
  2. 493039
  3. 970299
  4. 857375
  5. 238328
  6. 830584
  7. 658503
  8. 10648
  9. 531441
  10. 132651
  11. 456533
  12. 175616
  13. 85184
  14. 1728
  15. 571787
  16. 571787
  17. 148877
  18. 753571
  19. 2744
  20. 3375
  21. 4096
  22. 753571
  23. 357911
  24. 250047
  25. 32768
  26. 314432
  27. 300763
  28. 287496
  29. 328509
  30. 571787
  31. 12167
  32. 226981
  33. 778688
  34. 39304
  35. 205379
  36. 68921
  37. 704969
  38. 13824
  39. 551368
  40. 103823

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