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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 514 · 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. 1.43³ =
  2. 2.24³ =
  3. 3.86³ =
  4. 4.29³ =
  5. 5.81³ =
  6. 6.97³ =
  7. 7.17³ =
  8. 8.71³ =
  9. 9.28³ =
  10. 10.92³ =
  11. 11.83³ =
  12. 12.59³ =
  13. 13.93³ =
  14. 14.34³ =
  15. 15.17³ =
  16. 16.75³ =
  17. 17.25³ =
  18. 18.21³ =
  19. 19.49³ =
  20. 20.28³ =
  21. 21.14³ =
  22. 22.24³ =
  23. 23.73³ =
  24. 24.12³ =
  25. 25.48³ =
  26. 26.91³ =
  27. 27.93³ =
  28. 28.89³ =
  29. 29.91³ =
  30. 30.93³ =
  31. 31.97³ =
  32. 32.23³ =
  33. 33.56³ =
  34. 34.56³ =
  35. 35.88³ =
  36. 36.48³ =
  37. 37.32³ =
  38. 38.36³ =
  39. 39.21³ =
  40. 40.73³ =

Answer key

  1. 79507
  2. 13824
  3. 636056
  4. 24389
  5. 531441
  6. 912673
  7. 4913
  8. 357911
  9. 21952
  10. 778688
  11. 571787
  12. 205379
  13. 804357
  14. 39304
  15. 4913
  16. 421875
  17. 15625
  18. 9261
  19. 117649
  20. 21952
  21. 2744
  22. 13824
  23. 389017
  24. 1728
  25. 110592
  26. 753571
  27. 804357
  28. 704969
  29. 753571
  30. 804357
  31. 912673
  32. 12167
  33. 175616
  34. 175616
  35. 681472
  36. 110592
  37. 32768
  38. 46656
  39. 9261
  40. 389017

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