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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 55 · 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. 1.37³ =
  2. 2.91³ =
  3. 3.54³ =
  4. 4.22³ =
  5. 5.13³ =
  6. 6.27³ =
  7. 7.19³ =
  8. 8.37³ =
  9. 9.43³ =
  10. 10.38³ =
  11. 11.44³ =
  12. 12.14³ =
  13. 13.53³ =
  14. 14.31³ =
  15. 15.15³ =
  16. 16.88³ =
  17. 17.76³ =
  18. 18.34³ =
  19. 19.77³ =
  20. 20.12³ =
  21. 21.46³ =
  22. 22.71³ =
  23. 23.31³ =
  24. 24.62³ =
  25. 25.71³ =
  26. 26.34³ =
  27. 27.66³ =
  28. 28.55³ =
  29. 29.93³ =
  30. 30.62³ =
  31. 31.16³ =
  32. 32.41³ =
  33. 33.87³ =
  34. 34.23³ =
  35. 35.85³ =
  36. 36.38³ =
  37. 37.19³ =
  38. 38.18³ =
  39. 39.91³ =
  40. 40.79³ =

Answer key

  1. 50653
  2. 753571
  3. 157464
  4. 10648
  5. 2197
  6. 19683
  7. 6859
  8. 50653
  9. 79507
  10. 54872
  11. 85184
  12. 2744
  13. 148877
  14. 29791
  15. 3375
  16. 681472
  17. 438976
  18. 39304
  19. 456533
  20. 1728
  21. 97336
  22. 357911
  23. 29791
  24. 238328
  25. 357911
  26. 39304
  27. 287496
  28. 166375
  29. 804357
  30. 238328
  31. 4096
  32. 68921
  33. 658503
  34. 12167
  35. 614125
  36. 54872
  37. 6859
  38. 5832
  39. 753571
  40. 493039

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