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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 436 · 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. 1.88³ =
  2. 2.12³ =
  3. 3.45³ =
  4. 4.64³ =
  5. 5.38³ =
  6. 6.27³ =
  7. 7.46³ =
  8. 8.39³ =
  9. 9.76³ =
  10. 10.89³ =
  11. 11.15³ =
  12. 12.77³ =
  13. 13.92³ =
  14. 14.57³ =
  15. 15.16³ =
  16. 16.91³ =
  17. 17.28³ =
  18. 18.94³ =
  19. 19.96³ =
  20. 20.47³ =
  21. 21.26³ =
  22. 22.34³ =
  23. 23.21³ =
  24. 24.91³ =
  25. 25.35³ =
  26. 26.26³ =
  27. 27.81³ =
  28. 28.74³ =
  29. 29.61³ =
  30. 30.91³ =
  31. 31.63³ =
  32. 32.58³ =
  33. 33.88³ =
  34. 34.11³ =
  35. 35.53³ =
  36. 36.99³ =
  37. 37.77³ =
  38. 38.82³ =
  39. 39.13³ =
  40. 40.35³ =

Answer key

  1. 681472
  2. 1728
  3. 91125
  4. 262144
  5. 54872
  6. 19683
  7. 97336
  8. 59319
  9. 438976
  10. 704969
  11. 3375
  12. 456533
  13. 778688
  14. 185193
  15. 4096
  16. 753571
  17. 21952
  18. 830584
  19. 884736
  20. 103823
  21. 17576
  22. 39304
  23. 9261
  24. 753571
  25. 42875
  26. 17576
  27. 531441
  28. 405224
  29. 226981
  30. 753571
  31. 250047
  32. 195112
  33. 681472
  34. 1331
  35. 148877
  36. 970299
  37. 456533
  38. 551368
  39. 2197
  40. 42875

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