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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 249 · 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. 1.27³ =
  2. 2.17³ =
  3. 3.61³ =
  4. 4.85³ =
  5. 5.91³ =
  6. 6.67³ =
  7. 7.36³ =
  8. 8.22³ =
  9. 9.41³ =
  10. 10.78³ =
  11. 11.29³ =
  12. 12.46³ =
  13. 13.64³ =
  14. 14.28³ =
  15. 15.42³ =
  16. 16.81³ =
  17. 17.39³ =
  18. 18.25³ =
  19. 19.21³ =
  20. 20.29³ =
  21. 21.28³ =
  22. 22.94³ =
  23. 23.49³ =
  24. 24.95³ =
  25. 25.68³ =
  26. 26.18³ =
  27. 27.68³ =
  28. 28.31³ =
  29. 29.14³ =
  30. 30.11³ =
  31. 31.73³ =
  32. 32.81³ =
  33. 33.92³ =
  34. 34.15³ =
  35. 35.61³ =
  36. 36.55³ =
  37. 37.13³ =
  38. 38.87³ =
  39. 39.69³ =
  40. 40.41³ =

Answer key

  1. 19683
  2. 4913
  3. 226981
  4. 614125
  5. 753571
  6. 300763
  7. 46656
  8. 10648
  9. 68921
  10. 474552
  11. 24389
  12. 97336
  13. 262144
  14. 21952
  15. 74088
  16. 531441
  17. 59319
  18. 15625
  19. 9261
  20. 24389
  21. 21952
  22. 830584
  23. 117649
  24. 857375
  25. 314432
  26. 5832
  27. 314432
  28. 29791
  29. 2744
  30. 1331
  31. 389017
  32. 531441
  33. 778688
  34. 3375
  35. 226981
  36. 166375
  37. 2197
  38. 658503
  39. 328509
  40. 68921

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