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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 404 · 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. 1.17³ =
  2. 2.54³ =
  3. 3.77³ =
  4. 4.64³ =
  5. 5.41³ =
  6. 6.21³ =
  7. 7.41³ =
  8. 8.49³ =
  9. 9.21³ =
  10. 10.51³ =
  11. 11.14³ =
  12. 12.73³ =
  13. 13.91³ =
  14. 14.22³ =
  15. 15.31³ =
  16. 16.57³ =
  17. 17.63³ =
  18. 18.61³ =
  19. 19.36³ =
  20. 20.78³ =
  21. 21.13³ =
  22. 22.72³ =
  23. 23.53³ =
  24. 24.43³ =
  25. 25.91³ =
  26. 26.94³ =
  27. 27.75³ =
  28. 28.43³ =
  29. 29.84³ =
  30. 30.28³ =
  31. 31.99³ =
  32. 32.55³ =
  33. 33.14³ =
  34. 34.22³ =
  35. 35.91³ =
  36. 36.28³ =
  37. 37.33³ =
  38. 38.91³ =
  39. 39.22³ =
  40. 40.46³ =

Answer key

  1. 4913
  2. 157464
  3. 456533
  4. 262144
  5. 68921
  6. 9261
  7. 68921
  8. 117649
  9. 9261
  10. 132651
  11. 2744
  12. 389017
  13. 753571
  14. 10648
  15. 29791
  16. 185193
  17. 250047
  18. 226981
  19. 46656
  20. 474552
  21. 2197
  22. 373248
  23. 148877
  24. 79507
  25. 753571
  26. 830584
  27. 421875
  28. 79507
  29. 592704
  30. 21952
  31. 970299
  32. 166375
  33. 2744
  34. 10648
  35. 753571
  36. 21952
  37. 35937
  38. 753571
  39. 10648
  40. 97336

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