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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 730 · 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. 1.21³ =
  2. 2.36³ =
  3. 3.14³ =
  4. 4.64³ =
  5. 5.33³ =
  6. 6.21³ =
  7. 7.77³ =
  8. 8.91³ =
  9. 9.77³ =
  10. 10.57³ =
  11. 11.66³ =
  12. 12.58³ =
  13. 13.39³ =
  14. 14.31³ =
  15. 15.74³ =
  16. 16.76³ =
  17. 17.55³ =
  18. 18.93³ =
  19. 19.85³ =
  20. 20.98³ =
  21. 21.41³ =
  22. 22.71³ =
  23. 23.64³ =
  24. 24.32³ =
  25. 25.12³ =
  26. 26.88³ =
  27. 27.91³ =
  28. 28.41³ =
  29. 29.83³ =
  30. 30.81³ =
  31. 31.65³ =
  32. 32.81³ =
  33. 33.61³ =
  34. 34.26³ =
  35. 35.82³ =
  36. 36.91³ =
  37. 37.79³ =
  38. 38.84³ =
  39. 39.44³ =
  40. 40.48³ =

Answer key

  1. 9261
  2. 46656
  3. 2744
  4. 262144
  5. 35937
  6. 9261
  7. 456533
  8. 753571
  9. 456533
  10. 185193
  11. 287496
  12. 195112
  13. 59319
  14. 29791
  15. 405224
  16. 438976
  17. 166375
  18. 804357
  19. 614125
  20. 941192
  21. 68921
  22. 357911
  23. 262144
  24. 32768
  25. 1728
  26. 681472
  27. 753571
  28. 68921
  29. 571787
  30. 531441
  31. 274625
  32. 531441
  33. 226981
  34. 17576
  35. 551368
  36. 753571
  37. 493039
  38. 592704
  39. 85184
  40. 110592

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