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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 389 · 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. 1.82³ =
  2. 2.13³ =
  3. 3.49³ =
  4. 4.17³ =
  5. 5.87³ =
  6. 6.54³ =
  7. 7.87³ =
  8. 8.34³ =
  9. 9.51³ =
  10. 10.11³ =
  11. 11.12³ =
  12. 12.14³ =
  13. 13.67³ =
  14. 14.29³ =
  15. 15.64³ =
  16. 16.18³ =
  17. 17.44³ =
  18. 18.41³ =
  19. 19.78³ =
  20. 20.14³ =
  21. 21.31³ =
  22. 22.84³ =
  23. 23.31³ =
  24. 24.19³ =
  25. 25.68³ =
  26. 26.31³ =
  27. 27.21³ =
  28. 28.75³ =
  29. 29.77³ =
  30. 30.69³ =
  31. 31.37³ =
  32. 32.36³ =
  33. 33.84³ =
  34. 34.21³ =
  35. 35.51³ =
  36. 36.52³ =
  37. 37.54³ =
  38. 38.61³ =
  39. 39.71³ =
  40. 40.21³ =

Answer key

  1. 551368
  2. 2197
  3. 117649
  4. 4913
  5. 658503
  6. 157464
  7. 658503
  8. 39304
  9. 132651
  10. 1331
  11. 1728
  12. 2744
  13. 300763
  14. 24389
  15. 262144
  16. 5832
  17. 85184
  18. 68921
  19. 474552
  20. 2744
  21. 29791
  22. 592704
  23. 29791
  24. 6859
  25. 314432
  26. 29791
  27. 9261
  28. 421875
  29. 456533
  30. 328509
  31. 50653
  32. 46656
  33. 592704
  34. 9261
  35. 132651
  36. 140608
  37. 157464
  38. 226981
  39. 357911
  40. 9261

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