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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 665 · 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. 1.87³ =
  2. 2.94³ =
  3. 3.69³ =
  4. 4.38³ =
  5. 5.86³ =
  6. 6.84³ =
  7. 7.16³ =
  8. 8.84³ =
  9. 9.75³ =
  10. 10.27³ =
  11. 11.63³ =
  12. 12.21³ =
  13. 13.71³ =
  14. 14.41³ =
  15. 15.75³ =
  16. 16.71³ =
  17. 17.67³ =
  18. 18.14³ =
  19. 19.21³ =
  20. 20.79³ =
  21. 21.31³ =
  22. 22.81³ =
  23. 23.12³ =
  24. 24.41³ =
  25. 25.48³ =
  26. 26.72³ =
  27. 27.65³ =
  28. 28.71³ =
  29. 29.81³ =
  30. 30.99³ =
  31. 31.66³ =
  32. 32.97³ =
  33. 33.91³ =
  34. 34.17³ =
  35. 35.38³ =
  36. 36.36³ =
  37. 37.34³ =
  38. 38.27³ =
  39. 39.84³ =
  40. 40.91³ =

Answer key

  1. 658503
  2. 830584
  3. 328509
  4. 54872
  5. 636056
  6. 592704
  7. 4096
  8. 592704
  9. 421875
  10. 19683
  11. 250047
  12. 9261
  13. 357911
  14. 68921
  15. 421875
  16. 357911
  17. 300763
  18. 2744
  19. 9261
  20. 493039
  21. 29791
  22. 531441
  23. 1728
  24. 68921
  25. 110592
  26. 373248
  27. 274625
  28. 357911
  29. 531441
  30. 970299
  31. 287496
  32. 912673
  33. 753571
  34. 4913
  35. 54872
  36. 46656
  37. 39304
  38. 19683
  39. 592704
  40. 753571

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