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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 580 · 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. 1.11³ =
  2. 2.86³ =
  3. 3.23³ =
  4. 4.31³ =
  5. 5.61³ =
  6. 6.91³ =
  7. 7.91³ =
  8. 8.49³ =
  9. 9.61³ =
  10. 10.89³ =
  11. 11.29³ =
  12. 12.79³ =
  13. 13.61³ =
  14. 14.98³ =
  15. 15.31³ =
  16. 16.31³ =
  17. 17.15³ =
  18. 18.21³ =
  19. 19.67³ =
  20. 20.31³ =
  21. 21.64³ =
  22. 22.95³ =
  23. 23.81³ =
  24. 24.83³ =
  25. 25.13³ =
  26. 26.54³ =
  27. 27.13³ =
  28. 28.18³ =
  29. 29.28³ =
  30. 30.53³ =
  31. 31.43³ =
  32. 32.79³ =
  33. 33.26³ =
  34. 34.94³ =
  35. 35.99³ =
  36. 36.86³ =
  37. 37.66³ =
  38. 38.94³ =
  39. 39.18³ =
  40. 40.49³ =

Answer key

  1. 1331
  2. 636056
  3. 12167
  4. 29791
  5. 226981
  6. 753571
  7. 753571
  8. 117649
  9. 226981
  10. 704969
  11. 24389
  12. 493039
  13. 226981
  14. 941192
  15. 29791
  16. 29791
  17. 3375
  18. 9261
  19. 300763
  20. 29791
  21. 262144
  22. 857375
  23. 531441
  24. 571787
  25. 2197
  26. 157464
  27. 2197
  28. 5832
  29. 21952
  30. 148877
  31. 79507
  32. 493039
  33. 17576
  34. 830584
  35. 970299
  36. 636056
  37. 287496
  38. 830584
  39. 5832
  40. 117649

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