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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 331 · 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. 1.49³ =
  2. 2.83³ =
  3. 3.71³ =
  4. 4.73³ =
  5. 5.51³ =
  6. 6.37³ =
  7. 7.91³ =
  8. 8.16³ =
  9. 9.46³ =
  10. 10.27³ =
  11. 11.49³ =
  12. 12.77³ =
  13. 13.11³ =
  14. 14.91³ =
  15. 15.46³ =
  16. 16.84³ =
  17. 17.89³ =
  18. 18.35³ =
  19. 19.23³ =
  20. 20.71³ =
  21. 21.61³ =
  22. 22.55³ =
  23. 23.24³ =
  24. 24.98³ =
  25. 25.69³ =
  26. 26.15³ =
  27. 27.16³ =
  28. 28.73³ =
  29. 29.92³ =
  30. 30.26³ =
  31. 31.76³ =
  32. 32.53³ =
  33. 33.41³ =
  34. 34.21³ =
  35. 35.18³ =
  36. 36.34³ =
  37. 37.93³ =
  38. 38.27³ =
  39. 39.91³ =
  40. 40.95³ =

Answer key

  1. 117649
  2. 571787
  3. 357911
  4. 389017
  5. 132651
  6. 50653
  7. 753571
  8. 4096
  9. 97336
  10. 19683
  11. 117649
  12. 456533
  13. 1331
  14. 753571
  15. 97336
  16. 592704
  17. 704969
  18. 42875
  19. 12167
  20. 357911
  21. 226981
  22. 166375
  23. 13824
  24. 941192
  25. 328509
  26. 3375
  27. 4096
  28. 389017
  29. 778688
  30. 17576
  31. 438976
  32. 148877
  33. 68921
  34. 9261
  35. 5832
  36. 39304
  37. 804357
  38. 19683
  39. 753571
  40. 857375

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