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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 489 · 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. 1.49³ =
  2. 2.67³ =
  3. 3.89³ =
  4. 4.84³ =
  5. 5.44³ =
  6. 6.23³ =
  7. 7.67³ =
  8. 8.57³ =
  9. 9.37³ =
  10. 10.78³ =
  11. 11.18³ =
  12. 12.28³ =
  13. 13.93³ =
  14. 14.44³ =
  15. 15.41³ =
  16. 16.76³ =
  17. 17.27³ =
  18. 18.91³ =
  19. 19.49³ =
  20. 20.26³ =
  21. 21.31³ =
  22. 22.38³ =
  23. 23.21³ =
  24. 24.32³ =
  25. 25.91³ =
  26. 26.34³ =
  27. 27.83³ =
  28. 28.59³ =
  29. 29.94³ =
  30. 30.78³ =
  31. 31.78³ =
  32. 32.91³ =
  33. 33.53³ =
  34. 34.12³ =
  35. 35.99³ =
  36. 36.29³ =
  37. 37.61³ =
  38. 38.21³ =
  39. 39.18³ =
  40. 40.55³ =

Answer key

  1. 117649
  2. 300763
  3. 704969
  4. 592704
  5. 85184
  6. 12167
  7. 300763
  8. 185193
  9. 50653
  10. 474552
  11. 5832
  12. 21952
  13. 804357
  14. 85184
  15. 68921
  16. 438976
  17. 19683
  18. 753571
  19. 117649
  20. 17576
  21. 29791
  22. 54872
  23. 9261
  24. 32768
  25. 753571
  26. 39304
  27. 571787
  28. 205379
  29. 830584
  30. 474552
  31. 474552
  32. 753571
  33. 148877
  34. 1728
  35. 970299
  36. 24389
  37. 226981
  38. 9261
  39. 5832
  40. 166375

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