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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 925 · 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. 1.81³ =
  2. 2.15³ =
  3. 3.61³ =
  4. 4.64³ =
  5. 5.63³ =
  6. 6.48³ =
  7. 7.26³ =
  8. 8.22³ =
  9. 9.64³ =
  10. 10.15³ =
  11. 11.66³ =
  12. 12.91³ =
  13. 13.34³ =
  14. 14.12³ =
  15. 15.35³ =
  16. 16.19³ =
  17. 17.91³ =
  18. 18.48³ =
  19. 19.83³ =
  20. 20.96³ =
  21. 21.72³ =
  22. 22.28³ =
  23. 23.69³ =
  24. 24.91³ =
  25. 25.31³ =
  26. 26.91³ =
  27. 27.52³ =
  28. 28.31³ =
  29. 29.38³ =
  30. 30.61³ =
  31. 31.46³ =
  32. 32.24³ =
  33. 33.49³ =
  34. 34.68³ =
  35. 35.21³ =
  36. 36.53³ =
  37. 37.25³ =
  38. 38.22³ =
  39. 39.33³ =
  40. 40.49³ =

Answer key

  1. 531441
  2. 3375
  3. 226981
  4. 262144
  5. 250047
  6. 110592
  7. 17576
  8. 10648
  9. 262144
  10. 3375
  11. 287496
  12. 753571
  13. 39304
  14. 1728
  15. 42875
  16. 6859
  17. 753571
  18. 110592
  19. 571787
  20. 884736
  21. 373248
  22. 21952
  23. 328509
  24. 753571
  25. 29791
  26. 753571
  27. 140608
  28. 29791
  29. 54872
  30. 226981
  31. 97336
  32. 13824
  33. 117649
  34. 314432
  35. 9261
  36. 148877
  37. 15625
  38. 10648
  39. 35937
  40. 117649

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