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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 172 · 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. 1.69³ =
  2. 2.73³ =
  3. 3.45³ =
  4. 4.57³ =
  5. 5.34³ =
  6. 6.74³ =
  7. 7.27³ =
  8. 8.65³ =
  9. 9.41³ =
  10. 10.16³ =
  11. 11.75³ =
  12. 12.77³ =
  13. 13.87³ =
  14. 14.71³ =
  15. 15.17³ =
  16. 16.21³ =
  17. 17.94³ =
  18. 18.88³ =
  19. 19.79³ =
  20. 20.58³ =
  21. 21.68³ =
  22. 22.82³ =
  23. 23.94³ =
  24. 24.23³ =
  25. 25.31³ =
  26. 26.96³ =
  27. 27.49³ =
  28. 28.47³ =
  29. 29.73³ =
  30. 30.15³ =
  31. 31.34³ =
  32. 32.27³ =
  33. 33.67³ =
  34. 34.38³ =
  35. 35.85³ =
  36. 36.14³ =
  37. 37.56³ =
  38. 38.39³ =
  39. 39.82³ =
  40. 40.23³ =

Answer key

  1. 328509
  2. 389017
  3. 91125
  4. 185193
  5. 39304
  6. 405224
  7. 19683
  8. 274625
  9. 68921
  10. 4096
  11. 421875
  12. 456533
  13. 658503
  14. 357911
  15. 4913
  16. 9261
  17. 830584
  18. 681472
  19. 493039
  20. 195112
  21. 314432
  22. 551368
  23. 830584
  24. 12167
  25. 29791
  26. 884736
  27. 117649
  28. 103823
  29. 389017
  30. 3375
  31. 39304
  32. 19683
  33. 300763
  34. 54872
  35. 614125
  36. 2744
  37. 175616
  38. 59319
  39. 551368
  40. 12167

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