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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 411 · 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. 1.27³ =
  2. 2.73³ =
  3. 3.46³ =
  4. 4.32³ =
  5. 5.21³ =
  6. 6.63³ =
  7. 7.82³ =
  8. 8.27³ =
  9. 9.61³ =
  10. 10.71³ =
  11. 11.29³ =
  12. 12.26³ =
  13. 13.67³ =
  14. 14.67³ =
  15. 15.17³ =
  16. 16.25³ =
  17. 17.42³ =
  18. 18.56³ =
  19. 19.14³ =
  20. 20.47³ =
  21. 21.55³ =
  22. 22.94³ =
  23. 23.23³ =
  24. 24.66³ =
  25. 25.16³ =
  26. 26.16³ =
  27. 27.26³ =
  28. 28.49³ =
  29. 29.47³ =
  30. 30.48³ =
  31. 31.11³ =
  32. 32.16³ =
  33. 33.21³ =
  34. 34.53³ =
  35. 35.83³ =
  36. 36.87³ =
  37. 37.18³ =
  38. 38.94³ =
  39. 39.51³ =
  40. 40.83³ =

Answer key

  1. 19683
  2. 389017
  3. 97336
  4. 32768
  5. 9261
  6. 250047
  7. 551368
  8. 19683
  9. 226981
  10. 357911
  11. 24389
  12. 17576
  13. 300763
  14. 300763
  15. 4913
  16. 15625
  17. 74088
  18. 175616
  19. 2744
  20. 103823
  21. 166375
  22. 830584
  23. 12167
  24. 287496
  25. 4096
  26. 4096
  27. 17576
  28. 117649
  29. 103823
  30. 110592
  31. 1331
  32. 4096
  33. 9261
  34. 148877
  35. 571787
  36. 658503
  37. 5832
  38. 830584
  39. 132651
  40. 571787

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