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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 981 · 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. 2.45³ =
  3. 3.23³ =
  4. 4.17³ =
  5. 5.71³ =
  6. 6.13³ =
  7. 7.74³ =
  8. 8.39³ =
  9. 9.66³ =
  10. 10.21³ =
  11. 11.25³ =
  12. 12.23³ =
  13. 13.47³ =
  14. 14.43³ =
  15. 15.27³ =
  16. 16.71³ =
  17. 17.76³ =
  18. 18.41³ =
  19. 19.17³ =
  20. 20.76³ =
  21. 21.13³ =
  22. 22.23³ =
  23. 23.34³ =
  24. 24.61³ =
  25. 25.81³ =
  26. 26.54³ =
  27. 27.23³ =
  28. 28.27³ =
  29. 29.21³ =
  30. 30.15³ =
  31. 31.67³ =
  32. 32.44³ =
  33. 33.72³ =
  34. 34.29³ =
  35. 35.44³ =
  36. 36.91³ =
  37. 37.69³ =
  38. 38.27³ =
  39. 39.45³ =
  40. 40.83³ =

Answer key

  1. 250047
  2. 91125
  3. 12167
  4. 4913
  5. 357911
  6. 2197
  7. 405224
  8. 59319
  9. 287496
  10. 9261
  11. 15625
  12. 12167
  13. 103823
  14. 79507
  15. 19683
  16. 357911
  17. 438976
  18. 68921
  19. 4913
  20. 438976
  21. 2197
  22. 12167
  23. 39304
  24. 226981
  25. 531441
  26. 157464
  27. 12167
  28. 19683
  29. 9261
  30. 3375
  31. 300763
  32. 85184
  33. 373248
  34. 24389
  35. 85184
  36. 753571
  37. 328509
  38. 19683
  39. 91125
  40. 571787

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