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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 784 · 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. 1.79³ =
  2. 2.71³ =
  3. 3.27³ =
  4. 4.13³ =
  5. 5.98³ =
  6. 6.92³ =
  7. 7.98³ =
  8. 8.54³ =
  9. 9.86³ =
  10. 10.53³ =
  11. 11.72³ =
  12. 12.88³ =
  13. 13.17³ =
  14. 14.13³ =
  15. 15.71³ =
  16. 16.21³ =
  17. 17.28³ =
  18. 18.24³ =
  19. 19.31³ =
  20. 20.24³ =
  21. 21.79³ =
  22. 22.12³ =
  23. 23.14³ =
  24. 24.35³ =
  25. 25.91³ =
  26. 26.14³ =
  27. 27.79³ =
  28. 28.28³ =
  29. 29.41³ =
  30. 30.99³ =
  31. 31.35³ =
  32. 32.91³ =
  33. 33.23³ =
  34. 34.32³ =
  35. 35.34³ =
  36. 36.65³ =
  37. 37.28³ =
  38. 38.98³ =
  39. 39.77³ =
  40. 40.35³ =

Answer key

  1. 493039
  2. 357911
  3. 19683
  4. 2197
  5. 941192
  6. 778688
  7. 941192
  8. 157464
  9. 636056
  10. 148877
  11. 373248
  12. 681472
  13. 4913
  14. 2197
  15. 357911
  16. 9261
  17. 21952
  18. 13824
  19. 29791
  20. 13824
  21. 493039
  22. 1728
  23. 2744
  24. 42875
  25. 753571
  26. 2744
  27. 493039
  28. 21952
  29. 68921
  30. 970299
  31. 42875
  32. 753571
  33. 12167
  34. 32768
  35. 39304
  36. 274625
  37. 21952
  38. 941192
  39. 456533
  40. 42875

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