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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 320 · 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. 1.64³ =
  2. 2.81³ =
  3. 3.28³ =
  4. 4.59³ =
  5. 5.65³ =
  6. 6.71³ =
  7. 7.61³ =
  8. 8.83³ =
  9. 9.28³ =
  10. 10.32³ =
  11. 11.58³ =
  12. 12.84³ =
  13. 13.91³ =
  14. 14.58³ =
  15. 15.63³ =
  16. 16.26³ =
  17. 17.26³ =
  18. 18.31³ =
  19. 19.62³ =
  20. 20.81³ =
  21. 21.43³ =
  22. 22.45³ =
  23. 23.16³ =
  24. 24.82³ =
  25. 25.68³ =
  26. 26.28³ =
  27. 27.16³ =
  28. 28.56³ =
  29. 29.51³ =
  30. 30.48³ =
  31. 31.16³ =
  32. 32.19³ =
  33. 33.46³ =
  34. 34.73³ =
  35. 35.82³ =
  36. 36.29³ =
  37. 37.71³ =
  38. 38.41³ =
  39. 39.43³ =
  40. 40.16³ =

Answer key

  1. 262144
  2. 531441
  3. 21952
  4. 205379
  5. 274625
  6. 357911
  7. 226981
  8. 571787
  9. 21952
  10. 32768
  11. 195112
  12. 592704
  13. 753571
  14. 195112
  15. 250047
  16. 17576
  17. 17576
  18. 29791
  19. 238328
  20. 531441
  21. 79507
  22. 91125
  23. 4096
  24. 551368
  25. 314432
  26. 21952
  27. 4096
  28. 175616
  29. 132651
  30. 110592
  31. 4096
  32. 6859
  33. 97336
  34. 389017
  35. 551368
  36. 24389
  37. 357911
  38. 68921
  39. 79507
  40. 4096

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