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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 74 · 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. 1.25³ =
  2. 2.38³ =
  3. 3.89³ =
  4. 4.15³ =
  5. 5.42³ =
  6. 6.55³ =
  7. 7.26³ =
  8. 8.31³ =
  9. 9.51³ =
  10. 10.81³ =
  11. 11.87³ =
  12. 12.65³ =
  13. 13.84³ =
  14. 14.68³ =
  15. 15.89³ =
  16. 16.22³ =
  17. 17.39³ =
  18. 18.94³ =
  19. 19.97³ =
  20. 20.28³ =
  21. 21.93³ =
  22. 22.39³ =
  23. 23.39³ =
  24. 24.75³ =
  25. 25.31³ =
  26. 26.91³ =
  27. 27.71³ =
  28. 28.21³ =
  29. 29.12³ =
  30. 30.79³ =
  31. 31.64³ =
  32. 32.75³ =
  33. 33.92³ =
  34. 34.24³ =
  35. 35.27³ =
  36. 36.35³ =
  37. 37.19³ =
  38. 38.21³ =
  39. 39.69³ =
  40. 40.18³ =

Answer key

  1. 15625
  2. 54872
  3. 704969
  4. 3375
  5. 74088
  6. 166375
  7. 17576
  8. 29791
  9. 132651
  10. 531441
  11. 658503
  12. 274625
  13. 592704
  14. 314432
  15. 704969
  16. 10648
  17. 59319
  18. 830584
  19. 912673
  20. 21952
  21. 804357
  22. 59319
  23. 59319
  24. 421875
  25. 29791
  26. 753571
  27. 357911
  28. 9261
  29. 1728
  30. 493039
  31. 262144
  32. 421875
  33. 778688
  34. 13824
  35. 19683
  36. 42875
  37. 6859
  38. 9261
  39. 328509
  40. 5832

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