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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 212 · 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. 1.51³ =
  2. 2.47³ =
  3. 3.14³ =
  4. 4.81³ =
  5. 5.49³ =
  6. 6.94³ =
  7. 7.81³ =
  8. 8.98³ =
  9. 9.98³ =
  10. 10.66³ =
  11. 11.79³ =
  12. 12.63³ =
  13. 13.67³ =
  14. 14.53³ =
  15. 15.91³ =
  16. 16.79³ =
  17. 17.17³ =
  18. 18.97³ =
  19. 19.73³ =
  20. 20.49³ =
  21. 21.95³ =
  22. 22.15³ =
  23. 23.81³ =
  24. 24.15³ =
  25. 25.32³ =
  26. 26.33³ =
  27. 27.68³ =
  28. 28.33³ =
  29. 29.77³ =
  30. 30.74³ =
  31. 31.35³ =
  32. 32.31³ =
  33. 33.33³ =
  34. 34.89³ =
  35. 35.54³ =
  36. 36.58³ =
  37. 37.37³ =
  38. 38.82³ =
  39. 39.13³ =
  40. 40.21³ =

Answer key

  1. 132651
  2. 103823
  3. 2744
  4. 531441
  5. 117649
  6. 830584
  7. 531441
  8. 941192
  9. 941192
  10. 287496
  11. 493039
  12. 250047
  13. 300763
  14. 148877
  15. 753571
  16. 493039
  17. 4913
  18. 912673
  19. 389017
  20. 117649
  21. 857375
  22. 3375
  23. 531441
  24. 3375
  25. 32768
  26. 35937
  27. 314432
  28. 35937
  29. 456533
  30. 405224
  31. 42875
  32. 29791
  33. 35937
  34. 704969
  35. 157464
  36. 195112
  37. 50653
  38. 551368
  39. 2197
  40. 9261

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