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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 28 · 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. 1.89³ =
  2. 2.12³ =
  3. 3.66³ =
  4. 4.24³ =
  5. 5.99³ =
  6. 6.22³ =
  7. 7.71³ =
  8. 8.31³ =
  9. 9.19³ =
  10. 10.51³ =
  11. 11.41³ =
  12. 12.68³ =
  13. 13.37³ =
  14. 14.85³ =
  15. 15.75³ =
  16. 16.76³ =
  17. 17.31³ =
  18. 18.75³ =
  19. 19.29³ =
  20. 20.77³ =
  21. 21.91³ =
  22. 22.81³ =
  23. 23.96³ =
  24. 24.51³ =
  25. 25.23³ =
  26. 26.28³ =
  27. 27.83³ =
  28. 28.35³ =
  29. 29.97³ =
  30. 30.19³ =
  31. 31.51³ =
  32. 32.32³ =
  33. 33.34³ =
  34. 34.85³ =
  35. 35.25³ =
  36. 36.43³ =
  37. 37.45³ =
  38. 38.75³ =
  39. 39.26³ =
  40. 40.51³ =

Answer key

  1. 704969
  2. 1728
  3. 287496
  4. 13824
  5. 970299
  6. 10648
  7. 357911
  8. 29791
  9. 6859
  10. 132651
  11. 68921
  12. 314432
  13. 50653
  14. 614125
  15. 421875
  16. 438976
  17. 29791
  18. 421875
  19. 24389
  20. 456533
  21. 753571
  22. 531441
  23. 884736
  24. 132651
  25. 12167
  26. 21952
  27. 571787
  28. 42875
  29. 912673
  30. 6859
  31. 132651
  32. 32768
  33. 39304
  34. 614125
  35. 15625
  36. 79507
  37. 91125
  38. 421875
  39. 17576
  40. 132651

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