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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 60 · 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. 1.95³ =
  2. 2.74³ =
  3. 3.13³ =
  4. 4.63³ =
  5. 5.53³ =
  6. 6.53³ =
  7. 7.35³ =
  8. 8.86³ =
  9. 9.81³ =
  10. 10.58³ =
  11. 11.71³ =
  12. 12.84³ =
  13. 13.66³ =
  14. 14.48³ =
  15. 15.21³ =
  16. 16.57³ =
  17. 17.65³ =
  18. 18.12³ =
  19. 19.29³ =
  20. 20.14³ =
  21. 21.85³ =
  22. 22.33³ =
  23. 23.27³ =
  24. 24.31³ =
  25. 25.82³ =
  26. 26.47³ =
  27. 27.21³ =
  28. 28.52³ =
  29. 29.43³ =
  30. 30.99³ =
  31. 31.73³ =
  32. 32.27³ =
  33. 33.14³ =
  34. 34.24³ =
  35. 35.97³ =
  36. 36.35³ =
  37. 37.22³ =
  38. 38.44³ =
  39. 39.93³ =
  40. 40.36³ =

Answer key

  1. 857375
  2. 405224
  3. 2197
  4. 250047
  5. 148877
  6. 148877
  7. 42875
  8. 636056
  9. 531441
  10. 195112
  11. 357911
  12. 592704
  13. 287496
  14. 110592
  15. 9261
  16. 185193
  17. 274625
  18. 1728
  19. 24389
  20. 2744
  21. 614125
  22. 35937
  23. 19683
  24. 29791
  25. 551368
  26. 103823
  27. 9261
  28. 140608
  29. 79507
  30. 970299
  31. 389017
  32. 19683
  33. 2744
  34. 13824
  35. 912673
  36. 42875
  37. 10648
  38. 85184
  39. 804357
  40. 46656

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