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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 78 · 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. 2.63³ =
  3. 3.44³ =
  4. 4.61³ =
  5. 5.61³ =
  6. 6.16³ =
  7. 7.92³ =
  8. 8.95³ =
  9. 9.17³ =
  10. 10.92³ =
  11. 11.21³ =
  12. 12.76³ =
  13. 13.91³ =
  14. 14.32³ =
  15. 15.97³ =
  16. 16.18³ =
  17. 17.56³ =
  18. 18.43³ =
  19. 19.14³ =
  20. 20.21³ =
  21. 21.45³ =
  22. 22.39³ =
  23. 23.63³ =
  24. 24.58³ =
  25. 25.62³ =
  26. 26.77³ =
  27. 27.83³ =
  28. 28.91³ =
  29. 29.49³ =
  30. 30.96³ =
  31. 31.11³ =
  32. 32.61³ =
  33. 33.26³ =
  34. 34.61³ =
  35. 35.29³ =
  36. 36.15³ =
  37. 37.65³ =
  38. 38.91³ =
  39. 39.92³ =
  40. 40.81³ =

Answer key

  1. 19683
  2. 250047
  3. 85184
  4. 226981
  5. 226981
  6. 4096
  7. 778688
  8. 857375
  9. 4913
  10. 778688
  11. 9261
  12. 438976
  13. 753571
  14. 32768
  15. 912673
  16. 5832
  17. 175616
  18. 79507
  19. 2744
  20. 9261
  21. 91125
  22. 59319
  23. 250047
  24. 195112
  25. 238328
  26. 456533
  27. 571787
  28. 753571
  29. 117649
  30. 884736
  31. 1331
  32. 226981
  33. 17576
  34. 226981
  35. 24389
  36. 3375
  37. 274625
  38. 753571
  39. 778688
  40. 531441

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