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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 399 · 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. 1.31³ =
  2. 2.42³ =
  3. 3.54³ =
  4. 4.42³ =
  5. 5.63³ =
  6. 6.64³ =
  7. 7.24³ =
  8. 8.67³ =
  9. 9.34³ =
  10. 10.85³ =
  11. 11.19³ =
  12. 12.21³ =
  13. 13.57³ =
  14. 14.89³ =
  15. 15.55³ =
  16. 16.38³ =
  17. 17.82³ =
  18. 18.84³ =
  19. 19.71³ =
  20. 20.18³ =
  21. 21.63³ =
  22. 22.89³ =
  23. 23.34³ =
  24. 24.11³ =
  25. 25.63³ =
  26. 26.73³ =
  27. 27.68³ =
  28. 28.61³ =
  29. 29.41³ =
  30. 30.78³ =
  31. 31.55³ =
  32. 32.51³ =
  33. 33.56³ =
  34. 34.64³ =
  35. 35.31³ =
  36. 36.92³ =
  37. 37.82³ =
  38. 38.65³ =
  39. 39.59³ =
  40. 40.27³ =

Answer key

  1. 29791
  2. 74088
  3. 157464
  4. 74088
  5. 250047
  6. 262144
  7. 13824
  8. 300763
  9. 39304
  10. 614125
  11. 6859
  12. 9261
  13. 185193
  14. 704969
  15. 166375
  16. 54872
  17. 551368
  18. 592704
  19. 357911
  20. 5832
  21. 250047
  22. 704969
  23. 39304
  24. 1331
  25. 250047
  26. 389017
  27. 314432
  28. 226981
  29. 68921
  30. 474552
  31. 166375
  32. 132651
  33. 175616
  34. 262144
  35. 29791
  36. 778688
  37. 551368
  38. 274625
  39. 205379
  40. 19683

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