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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 208 · 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. 1.89³ =
  2. 2.58³ =
  3. 3.13³ =
  4. 4.31³ =
  5. 5.16³ =
  6. 6.11³ =
  7. 7.86³ =
  8. 8.76³ =
  9. 9.84³ =
  10. 10.29³ =
  11. 11.52³ =
  12. 12.39³ =
  13. 13.98³ =
  14. 14.49³ =
  15. 15.89³ =
  16. 16.11³ =
  17. 17.29³ =
  18. 18.76³ =
  19. 19.68³ =
  20. 20.69³ =
  21. 21.56³ =
  22. 22.91³ =
  23. 23.12³ =
  24. 24.99³ =
  25. 25.31³ =
  26. 26.28³ =
  27. 27.64³ =
  28. 28.71³ =
  29. 29.61³ =
  30. 30.98³ =
  31. 31.71³ =
  32. 32.27³ =
  33. 33.55³ =
  34. 34.65³ =
  35. 35.68³ =
  36. 36.81³ =
  37. 37.45³ =
  38. 38.85³ =
  39. 39.25³ =
  40. 40.65³ =

Answer key

  1. 704969
  2. 195112
  3. 2197
  4. 29791
  5. 4096
  6. 1331
  7. 636056
  8. 438976
  9. 592704
  10. 24389
  11. 140608
  12. 59319
  13. 941192
  14. 117649
  15. 704969
  16. 1331
  17. 24389
  18. 438976
  19. 314432
  20. 328509
  21. 175616
  22. 753571
  23. 1728
  24. 970299
  25. 29791
  26. 21952
  27. 262144
  28. 357911
  29. 226981
  30. 941192
  31. 357911
  32. 19683
  33. 166375
  34. 274625
  35. 314432
  36. 531441
  37. 91125
  38. 614125
  39. 15625
  40. 274625

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