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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 926 · 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. 1.81³ =
  2. 2.77³ =
  3. 3.82³ =
  4. 4.66³ =
  5. 5.37³ =
  6. 6.54³ =
  7. 7.84³ =
  8. 8.94³ =
  9. 9.92³ =
  10. 10.91³ =
  11. 11.25³ =
  12. 12.91³ =
  13. 13.74³ =
  14. 14.76³ =
  15. 15.39³ =
  16. 16.36³ =
  17. 17.88³ =
  18. 18.37³ =
  19. 19.19³ =
  20. 20.84³ =
  21. 21.32³ =
  22. 22.54³ =
  23. 23.11³ =
  24. 24.17³ =
  25. 25.47³ =
  26. 26.14³ =
  27. 27.31³ =
  28. 28.41³ =
  29. 29.55³ =
  30. 30.59³ =
  31. 31.79³ =
  32. 32.61³ =
  33. 33.97³ =
  34. 34.55³ =
  35. 35.99³ =
  36. 36.29³ =
  37. 37.51³ =
  38. 38.76³ =
  39. 39.42³ =
  40. 40.62³ =

Answer key

  1. 531441
  2. 456533
  3. 551368
  4. 287496
  5. 50653
  6. 157464
  7. 592704
  8. 830584
  9. 778688
  10. 753571
  11. 15625
  12. 753571
  13. 405224
  14. 438976
  15. 59319
  16. 46656
  17. 681472
  18. 50653
  19. 6859
  20. 592704
  21. 32768
  22. 157464
  23. 1331
  24. 4913
  25. 103823
  26. 2744
  27. 29791
  28. 68921
  29. 166375
  30. 205379
  31. 493039
  32. 226981
  33. 912673
  34. 166375
  35. 970299
  36. 24389
  37. 132651
  38. 438976
  39. 74088
  40. 238328

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