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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 138 · 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. 2.53³ =
  3. 3.64³ =
  4. 4.61³ =
  5. 5.46³ =
  6. 6.15³ =
  7. 7.81³ =
  8. 8.12³ =
  9. 9.52³ =
  10. 10.69³ =
  11. 11.14³ =
  12. 12.63³ =
  13. 13.38³ =
  14. 14.67³ =
  15. 15.32³ =
  16. 16.67³ =
  17. 17.14³ =
  18. 18.82³ =
  19. 19.22³ =
  20. 20.61³ =
  21. 21.22³ =
  22. 22.62³ =
  23. 23.28³ =
  24. 24.88³ =
  25. 25.46³ =
  26. 26.38³ =
  27. 27.78³ =
  28. 28.49³ =
  29. 29.96³ =
  30. 30.63³ =
  31. 31.34³ =
  32. 32.41³ =
  33. 33.11³ =
  34. 34.18³ =
  35. 35.22³ =
  36. 36.25³ =
  37. 37.48³ =
  38. 38.99³ =
  39. 39.24³ =
  40. 40.66³ =

Answer key

  1. 551368
  2. 148877
  3. 262144
  4. 226981
  5. 97336
  6. 3375
  7. 531441
  8. 1728
  9. 140608
  10. 328509
  11. 2744
  12. 250047
  13. 54872
  14. 300763
  15. 32768
  16. 300763
  17. 2744
  18. 551368
  19. 10648
  20. 226981
  21. 10648
  22. 238328
  23. 21952
  24. 681472
  25. 97336
  26. 54872
  27. 474552
  28. 117649
  29. 884736
  30. 250047
  31. 39304
  32. 68921
  33. 1331
  34. 5832
  35. 10648
  36. 15625
  37. 110592
  38. 970299
  39. 13824
  40. 287496

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