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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 922 · 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. 1.27³ =
  2. 2.71³ =
  3. 3.34³ =
  4. 4.21³ =
  5. 5.19³ =
  6. 6.21³ =
  7. 7.89³ =
  8. 8.29³ =
  9. 9.76³ =
  10. 10.92³ =
  11. 11.22³ =
  12. 12.41³ =
  13. 13.83³ =
  14. 14.86³ =
  15. 15.99³ =
  16. 16.54³ =
  17. 17.75³ =
  18. 18.11³ =
  19. 19.75³ =
  20. 20.92³ =
  21. 21.81³ =
  22. 22.24³ =
  23. 23.63³ =
  24. 24.47³ =
  25. 25.61³ =
  26. 26.72³ =
  27. 27.34³ =
  28. 28.48³ =
  29. 29.19³ =
  30. 30.91³ =
  31. 31.37³ =
  32. 32.37³ =
  33. 33.99³ =
  34. 34.11³ =
  35. 35.18³ =
  36. 36.57³ =
  37. 37.52³ =
  38. 38.72³ =
  39. 39.78³ =
  40. 40.88³ =

Answer key

  1. 19683
  2. 357911
  3. 39304
  4. 9261
  5. 6859
  6. 9261
  7. 704969
  8. 24389
  9. 438976
  10. 778688
  11. 10648
  12. 68921
  13. 571787
  14. 636056
  15. 970299
  16. 157464
  17. 421875
  18. 1331
  19. 421875
  20. 778688
  21. 531441
  22. 13824
  23. 250047
  24. 103823
  25. 226981
  26. 373248
  27. 39304
  28. 110592
  29. 6859
  30. 753571
  31. 50653
  32. 50653
  33. 970299
  34. 1331
  35. 5832
  36. 185193
  37. 140608
  38. 373248
  39. 474552
  40. 681472

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