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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 471 · 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. 1.49³ =
  2. 2.21³ =
  3. 3.81³ =
  4. 4.58³ =
  5. 5.26³ =
  6. 6.52³ =
  7. 7.45³ =
  8. 8.27³ =
  9. 9.15³ =
  10. 10.23³ =
  11. 11.45³ =
  12. 12.16³ =
  13. 13.11³ =
  14. 14.31³ =
  15. 15.14³ =
  16. 16.89³ =
  17. 17.55³ =
  18. 18.92³ =
  19. 19.55³ =
  20. 20.21³ =
  21. 21.31³ =
  22. 22.51³ =
  23. 23.21³ =
  24. 24.82³ =
  25. 25.85³ =
  26. 26.75³ =
  27. 27.15³ =
  28. 28.34³ =
  29. 29.34³ =
  30. 30.22³ =
  31. 31.21³ =
  32. 32.59³ =
  33. 33.71³ =
  34. 34.57³ =
  35. 35.17³ =
  36. 36.85³ =
  37. 37.69³ =
  38. 38.31³ =
  39. 39.27³ =
  40. 40.21³ =

Answer key

  1. 117649
  2. 9261
  3. 531441
  4. 195112
  5. 17576
  6. 140608
  7. 91125
  8. 19683
  9. 3375
  10. 12167
  11. 91125
  12. 4096
  13. 1331
  14. 29791
  15. 2744
  16. 704969
  17. 166375
  18. 778688
  19. 166375
  20. 9261
  21. 29791
  22. 132651
  23. 9261
  24. 551368
  25. 614125
  26. 421875
  27. 3375
  28. 39304
  29. 39304
  30. 10648
  31. 9261
  32. 205379
  33. 357911
  34. 185193
  35. 4913
  36. 614125
  37. 328509
  38. 29791
  39. 19683
  40. 9261

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