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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 330 · 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. 1.63³ =
  2. 2.41³ =
  3. 3.32³ =
  4. 4.84³ =
  5. 5.59³ =
  6. 6.78³ =
  7. 7.45³ =
  8. 8.69³ =
  9. 9.12³ =
  10. 10.62³ =
  11. 11.11³ =
  12. 12.65³ =
  13. 13.41³ =
  14. 14.99³ =
  15. 15.59³ =
  16. 16.75³ =
  17. 17.44³ =
  18. 18.32³ =
  19. 19.49³ =
  20. 20.56³ =
  21. 21.46³ =
  22. 22.61³ =
  23. 23.41³ =
  24. 24.31³ =
  25. 25.99³ =
  26. 26.59³ =
  27. 27.11³ =
  28. 28.99³ =
  29. 29.49³ =
  30. 30.35³ =
  31. 31.73³ =
  32. 32.27³ =
  33. 33.66³ =
  34. 34.13³ =
  35. 35.73³ =
  36. 36.48³ =
  37. 37.77³ =
  38. 38.62³ =
  39. 39.87³ =
  40. 40.71³ =

Answer key

  1. 250047
  2. 68921
  3. 32768
  4. 592704
  5. 205379
  6. 474552
  7. 91125
  8. 328509
  9. 1728
  10. 238328
  11. 1331
  12. 274625
  13. 68921
  14. 970299
  15. 205379
  16. 421875
  17. 85184
  18. 32768
  19. 117649
  20. 175616
  21. 97336
  22. 226981
  23. 68921
  24. 29791
  25. 970299
  26. 205379
  27. 1331
  28. 970299
  29. 117649
  30. 42875
  31. 389017
  32. 19683
  33. 287496
  34. 2197
  35. 389017
  36. 110592
  37. 456533
  38. 238328
  39. 658503
  40. 357911

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