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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 321 · 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. 1.61³ =
  2. 2.41³ =
  3. 3.75³ =
  4. 4.87³ =
  5. 5.71³ =
  6. 6.25³ =
  7. 7.73³ =
  8. 8.31³ =
  9. 9.73³ =
  10. 10.71³ =
  11. 11.71³ =
  12. 12.64³ =
  13. 13.15³ =
  14. 14.14³ =
  15. 15.78³ =
  16. 16.63³ =
  17. 17.18³ =
  18. 18.12³ =
  19. 19.84³ =
  20. 20.39³ =
  21. 21.95³ =
  22. 22.87³ =
  23. 23.52³ =
  24. 24.73³ =
  25. 25.89³ =
  26. 26.41³ =
  27. 27.18³ =
  28. 28.62³ =
  29. 29.91³ =
  30. 30.96³ =
  31. 31.68³ =
  32. 32.19³ =
  33. 33.35³ =
  34. 34.61³ =
  35. 35.48³ =
  36. 36.36³ =
  37. 37.31³ =
  38. 38.62³ =
  39. 39.29³ =
  40. 40.82³ =

Answer key

  1. 226981
  2. 68921
  3. 421875
  4. 658503
  5. 357911
  6. 15625
  7. 389017
  8. 29791
  9. 389017
  10. 357911
  11. 357911
  12. 262144
  13. 3375
  14. 2744
  15. 474552
  16. 250047
  17. 5832
  18. 1728
  19. 592704
  20. 59319
  21. 857375
  22. 658503
  23. 140608
  24. 389017
  25. 704969
  26. 68921
  27. 5832
  28. 238328
  29. 753571
  30. 884736
  31. 314432
  32. 6859
  33. 42875
  34. 226981
  35. 110592
  36. 46656
  37. 29791
  38. 238328
  39. 24389
  40. 551368

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