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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 131 · 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. 1.85³ =
  2. 2.27³ =
  3. 3.89³ =
  4. 4.69³ =
  5. 5.75³ =
  6. 6.55³ =
  7. 7.59³ =
  8. 8.63³ =
  9. 9.27³ =
  10. 10.95³ =
  11. 11.19³ =
  12. 12.64³ =
  13. 13.41³ =
  14. 14.17³ =
  15. 15.91³ =
  16. 16.29³ =
  17. 17.75³ =
  18. 18.97³ =
  19. 19.65³ =
  20. 20.88³ =
  21. 21.96³ =
  22. 22.31³ =
  23. 23.79³ =
  24. 24.56³ =
  25. 25.65³ =
  26. 26.21³ =
  27. 27.33³ =
  28. 28.62³ =
  29. 29.64³ =
  30. 30.61³ =
  31. 31.42³ =
  32. 32.67³ =
  33. 33.31³ =
  34. 34.65³ =
  35. 35.26³ =
  36. 36.16³ =
  37. 37.42³ =
  38. 38.51³ =
  39. 39.89³ =
  40. 40.21³ =

Answer key

  1. 614125
  2. 19683
  3. 704969
  4. 328509
  5. 421875
  6. 166375
  7. 205379
  8. 250047
  9. 19683
  10. 857375
  11. 6859
  12. 262144
  13. 68921
  14. 4913
  15. 753571
  16. 24389
  17. 421875
  18. 912673
  19. 274625
  20. 681472
  21. 884736
  22. 29791
  23. 493039
  24. 175616
  25. 274625
  26. 9261
  27. 35937
  28. 238328
  29. 262144
  30. 226981
  31. 74088
  32. 300763
  33. 29791
  34. 274625
  35. 17576
  36. 4096
  37. 74088
  38. 132651
  39. 704969
  40. 9261

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