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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 420 · 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. 2.42³ =
  3. 3.16³ =
  4. 4.33³ =
  5. 5.83³ =
  6. 6.31³ =
  7. 7.53³ =
  8. 8.92³ =
  9. 9.13³ =
  10. 10.25³ =
  11. 11.77³ =
  12. 12.71³ =
  13. 13.21³ =
  14. 14.38³ =
  15. 15.32³ =
  16. 16.62³ =
  17. 17.58³ =
  18. 18.16³ =
  19. 19.79³ =
  20. 20.69³ =
  21. 21.52³ =
  22. 22.65³ =
  23. 23.94³ =
  24. 24.46³ =
  25. 25.39³ =
  26. 26.41³ =
  27. 27.27³ =
  28. 28.94³ =
  29. 29.31³ =
  30. 30.47³ =
  31. 31.34³ =
  32. 32.36³ =
  33. 33.21³ =
  34. 34.95³ =
  35. 35.44³ =
  36. 36.12³ =
  37. 37.21³ =
  38. 38.41³ =
  39. 39.39³ =
  40. 40.88³ =

Answer key

  1. 9261
  2. 74088
  3. 4096
  4. 35937
  5. 571787
  6. 29791
  7. 148877
  8. 778688
  9. 2197
  10. 15625
  11. 456533
  12. 357911
  13. 9261
  14. 54872
  15. 32768
  16. 238328
  17. 195112
  18. 4096
  19. 493039
  20. 328509
  21. 140608
  22. 274625
  23. 830584
  24. 97336
  25. 59319
  26. 68921
  27. 19683
  28. 830584
  29. 29791
  30. 103823
  31. 39304
  32. 46656
  33. 9261
  34. 857375
  35. 85184
  36. 1728
  37. 9261
  38. 68921
  39. 59319
  40. 681472

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