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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 600 · 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. 1.97³ =
  2. 2.18³ =
  3. 3.54³ =
  4. 4.87³ =
  5. 5.56³ =
  6. 6.77³ =
  7. 7.66³ =
  8. 8.51³ =
  9. 9.94³ =
  10. 10.35³ =
  11. 11.32³ =
  12. 12.39³ =
  13. 13.75³ =
  14. 14.38³ =
  15. 15.86³ =
  16. 16.54³ =
  17. 17.83³ =
  18. 18.64³ =
  19. 19.99³ =
  20. 20.27³ =
  21. 21.74³ =
  22. 22.59³ =
  23. 23.87³ =
  24. 24.77³ =
  25. 25.47³ =
  26. 26.28³ =
  27. 27.88³ =
  28. 28.65³ =
  29. 29.98³ =
  30. 30.81³ =
  31. 31.31³ =
  32. 32.66³ =
  33. 33.21³ =
  34. 34.48³ =
  35. 35.13³ =
  36. 36.61³ =
  37. 37.95³ =
  38. 38.61³ =
  39. 39.21³ =
  40. 40.37³ =

Answer key

  1. 912673
  2. 5832
  3. 157464
  4. 658503
  5. 175616
  6. 456533
  7. 287496
  8. 132651
  9. 830584
  10. 42875
  11. 32768
  12. 59319
  13. 421875
  14. 54872
  15. 636056
  16. 157464
  17. 571787
  18. 262144
  19. 970299
  20. 19683
  21. 405224
  22. 205379
  23. 658503
  24. 456533
  25. 103823
  26. 21952
  27. 681472
  28. 274625
  29. 941192
  30. 531441
  31. 29791
  32. 287496
  33. 9261
  34. 110592
  35. 2197
  36. 226981
  37. 857375
  38. 226981
  39. 9261
  40. 50653

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