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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 206 · 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. 1.39³ =
  2. 2.72³ =
  3. 3.28³ =
  4. 4.99³ =
  5. 5.17³ =
  6. 6.47³ =
  7. 7.49³ =
  8. 8.59³ =
  9. 9.76³ =
  10. 10.28³ =
  11. 11.17³ =
  12. 12.97³ =
  13. 13.13³ =
  14. 14.59³ =
  15. 15.41³ =
  16. 16.17³ =
  17. 17.99³ =
  18. 18.81³ =
  19. 19.68³ =
  20. 20.44³ =
  21. 21.68³ =
  22. 22.61³ =
  23. 23.13³ =
  24. 24.41³ =
  25. 25.54³ =
  26. 26.22³ =
  27. 27.32³ =
  28. 28.64³ =
  29. 29.67³ =
  30. 30.85³ =
  31. 31.67³ =
  32. 32.66³ =
  33. 33.44³ =
  34. 34.62³ =
  35. 35.16³ =
  36. 36.78³ =
  37. 37.68³ =
  38. 38.27³ =
  39. 39.38³ =
  40. 40.16³ =

Answer key

  1. 59319
  2. 373248
  3. 21952
  4. 970299
  5. 4913
  6. 103823
  7. 117649
  8. 205379
  9. 438976
  10. 21952
  11. 4913
  12. 912673
  13. 2197
  14. 205379
  15. 68921
  16. 4913
  17. 970299
  18. 531441
  19. 314432
  20. 85184
  21. 314432
  22. 226981
  23. 2197
  24. 68921
  25. 157464
  26. 10648
  27. 32768
  28. 262144
  29. 300763
  30. 614125
  31. 300763
  32. 287496
  33. 85184
  34. 238328
  35. 4096
  36. 474552
  37. 314432
  38. 19683
  39. 54872
  40. 4096

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