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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 423 · 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. 2.76³ =
  3. 3.66³ =
  4. 4.34³ =
  5. 5.21³ =
  6. 6.42³ =
  7. 7.37³ =
  8. 8.75³ =
  9. 9.25³ =
  10. 10.54³ =
  11. 11.36³ =
  12. 12.95³ =
  13. 13.81³ =
  14. 14.17³ =
  15. 15.52³ =
  16. 16.81³ =
  17. 17.46³ =
  18. 18.86³ =
  19. 19.38³ =
  20. 20.66³ =
  21. 21.85³ =
  22. 22.53³ =
  23. 23.54³ =
  24. 24.78³ =
  25. 25.41³ =
  26. 26.89³ =
  27. 27.51³ =
  28. 28.31³ =
  29. 29.83³ =
  30. 30.31³ =
  31. 31.25³ =
  32. 32.86³ =
  33. 33.83³ =
  34. 34.66³ =
  35. 35.37³ =
  36. 36.33³ =
  37. 37.93³ =
  38. 38.88³ =
  39. 39.18³ =
  40. 40.59³ =

Answer key

  1. 9261
  2. 438976
  3. 287496
  4. 39304
  5. 9261
  6. 74088
  7. 50653
  8. 421875
  9. 15625
  10. 157464
  11. 46656
  12. 857375
  13. 531441
  14. 4913
  15. 140608
  16. 531441
  17. 97336
  18. 636056
  19. 54872
  20. 287496
  21. 614125
  22. 148877
  23. 157464
  24. 474552
  25. 68921
  26. 704969
  27. 132651
  28. 29791
  29. 571787
  30. 29791
  31. 15625
  32. 636056
  33. 571787
  34. 287496
  35. 50653
  36. 35937
  37. 804357
  38. 681472
  39. 5832
  40. 205379

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