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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 383 · 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. 1.99³ =
  2. 2.58³ =
  3. 3.64³ =
  4. 4.95³ =
  5. 5.97³ =
  6. 6.21³ =
  7. 7.49³ =
  8. 8.81³ =
  9. 9.91³ =
  10. 10.99³ =
  11. 11.31³ =
  12. 12.98³ =
  13. 13.89³ =
  14. 14.96³ =
  15. 15.17³ =
  16. 16.15³ =
  17. 17.41³ =
  18. 18.29³ =
  19. 19.91³ =
  20. 20.14³ =
  21. 21.71³ =
  22. 22.68³ =
  23. 23.12³ =
  24. 24.99³ =
  25. 25.38³ =
  26. 26.81³ =
  27. 27.66³ =
  28. 28.65³ =
  29. 29.16³ =
  30. 30.16³ =
  31. 31.34³ =
  32. 32.53³ =
  33. 33.33³ =
  34. 34.14³ =
  35. 35.31³ =
  36. 36.71³ =
  37. 37.41³ =
  38. 38.22³ =
  39. 39.15³ =
  40. 40.81³ =

Answer key

  1. 970299
  2. 195112
  3. 262144
  4. 857375
  5. 912673
  6. 9261
  7. 117649
  8. 531441
  9. 753571
  10. 970299
  11. 29791
  12. 941192
  13. 704969
  14. 884736
  15. 4913
  16. 3375
  17. 68921
  18. 24389
  19. 753571
  20. 2744
  21. 357911
  22. 314432
  23. 1728
  24. 970299
  25. 54872
  26. 531441
  27. 287496
  28. 274625
  29. 4096
  30. 4096
  31. 39304
  32. 148877
  33. 35937
  34. 2744
  35. 29791
  36. 357911
  37. 68921
  38. 10648
  39. 3375
  40. 531441

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