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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 699 · 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. 1.12³ =
  2. 2.13³ =
  3. 3.79³ =
  4. 4.86³ =
  5. 5.25³ =
  6. 6.96³ =
  7. 7.83³ =
  8. 8.27³ =
  9. 9.62³ =
  10. 10.79³ =
  11. 11.66³ =
  12. 12.55³ =
  13. 13.73³ =
  14. 14.61³ =
  15. 15.13³ =
  16. 16.89³ =
  17. 17.67³ =
  18. 18.34³ =
  19. 19.46³ =
  20. 20.14³ =
  21. 21.68³ =
  22. 22.88³ =
  23. 23.94³ =
  24. 24.42³ =
  25. 25.39³ =
  26. 26.47³ =
  27. 27.32³ =
  28. 28.45³ =
  29. 29.41³ =
  30. 30.51³ =
  31. 31.71³ =
  32. 32.25³ =
  33. 33.14³ =
  34. 34.24³ =
  35. 35.87³ =
  36. 36.41³ =
  37. 37.62³ =
  38. 38.53³ =
  39. 39.62³ =
  40. 40.74³ =

Answer key

  1. 1728
  2. 2197
  3. 493039
  4. 636056
  5. 15625
  6. 884736
  7. 571787
  8. 19683
  9. 238328
  10. 493039
  11. 287496
  12. 166375
  13. 389017
  14. 226981
  15. 2197
  16. 704969
  17. 300763
  18. 39304
  19. 97336
  20. 2744
  21. 314432
  22. 681472
  23. 830584
  24. 74088
  25. 59319
  26. 103823
  27. 32768
  28. 91125
  29. 68921
  30. 132651
  31. 357911
  32. 15625
  33. 2744
  34. 13824
  35. 658503
  36. 68921
  37. 238328
  38. 148877
  39. 238328
  40. 405224

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