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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 728 · 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. 1.21³ =
  2. 2.96³ =
  3. 3.63³ =
  4. 4.21³ =
  5. 5.41³ =
  6. 6.97³ =
  7. 7.47³ =
  8. 8.16³ =
  9. 9.58³ =
  10. 10.45³ =
  11. 11.12³ =
  12. 12.64³ =
  13. 13.27³ =
  14. 14.75³ =
  15. 15.59³ =
  16. 16.11³ =
  17. 17.77³ =
  18. 18.61³ =
  19. 19.28³ =
  20. 20.34³ =
  21. 21.17³ =
  22. 22.13³ =
  23. 23.14³ =
  24. 24.34³ =
  25. 25.73³ =
  26. 26.92³ =
  27. 27.31³ =
  28. 28.97³ =
  29. 29.26³ =
  30. 30.21³ =
  31. 31.91³ =
  32. 32.48³ =
  33. 33.16³ =
  34. 34.34³ =
  35. 35.34³ =
  36. 36.39³ =
  37. 37.84³ =
  38. 38.32³ =
  39. 39.11³ =
  40. 40.47³ =

Answer key

  1. 9261
  2. 884736
  3. 250047
  4. 9261
  5. 68921
  6. 912673
  7. 103823
  8. 4096
  9. 195112
  10. 91125
  11. 1728
  12. 262144
  13. 19683
  14. 421875
  15. 205379
  16. 1331
  17. 456533
  18. 226981
  19. 21952
  20. 39304
  21. 4913
  22. 2197
  23. 2744
  24. 39304
  25. 389017
  26. 778688
  27. 29791
  28. 912673
  29. 17576
  30. 9261
  31. 753571
  32. 110592
  33. 4096
  34. 39304
  35. 39304
  36. 59319
  37. 592704
  38. 32768
  39. 1331
  40. 103823

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