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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 782 · 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. 1.79³ =
  2. 2.29³ =
  3. 3.35³ =
  4. 4.45³ =
  5. 5.41³ =
  6. 6.19³ =
  7. 7.63³ =
  8. 8.92³ =
  9. 9.91³ =
  10. 10.21³ =
  11. 11.91³ =
  12. 12.29³ =
  13. 13.19³ =
  14. 14.37³ =
  15. 15.64³ =
  16. 16.84³ =
  17. 17.85³ =
  18. 18.76³ =
  19. 19.19³ =
  20. 20.98³ =
  21. 21.39³ =
  22. 22.28³ =
  23. 23.92³ =
  24. 24.61³ =
  25. 25.14³ =
  26. 26.89³ =
  27. 27.18³ =
  28. 28.39³ =
  29. 29.21³ =
  30. 30.57³ =
  31. 31.22³ =
  32. 32.47³ =
  33. 33.61³ =
  34. 34.41³ =
  35. 35.31³ =
  36. 36.58³ =
  37. 37.58³ =
  38. 38.67³ =
  39. 39.51³ =
  40. 40.81³ =

Answer key

  1. 493039
  2. 24389
  3. 42875
  4. 91125
  5. 68921
  6. 6859
  7. 250047
  8. 778688
  9. 753571
  10. 9261
  11. 753571
  12. 24389
  13. 6859
  14. 50653
  15. 262144
  16. 592704
  17. 614125
  18. 438976
  19. 6859
  20. 941192
  21. 59319
  22. 21952
  23. 778688
  24. 226981
  25. 2744
  26. 704969
  27. 5832
  28. 59319
  29. 9261
  30. 185193
  31. 10648
  32. 103823
  33. 226981
  34. 68921
  35. 29791
  36. 195112
  37. 195112
  38. 300763
  39. 132651
  40. 531441

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