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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 672 · 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. 1.74³ =
  2. 2.41³ =
  3. 3.57³ =
  4. 4.23³ =
  5. 5.41³ =
  6. 6.18³ =
  7. 7.23³ =
  8. 8.54³ =
  9. 9.35³ =
  10. 10.16³ =
  11. 11.69³ =
  12. 12.16³ =
  13. 13.18³ =
  14. 14.77³ =
  15. 15.63³ =
  16. 16.47³ =
  17. 17.81³ =
  18. 18.17³ =
  19. 19.56³ =
  20. 20.15³ =
  21. 21.35³ =
  22. 22.91³ =
  23. 23.28³ =
  24. 24.52³ =
  25. 25.51³ =
  26. 26.31³ =
  27. 27.61³ =
  28. 28.36³ =
  29. 29.29³ =
  30. 30.35³ =
  31. 31.74³ =
  32. 32.98³ =
  33. 33.67³ =
  34. 34.46³ =
  35. 35.76³ =
  36. 36.82³ =
  37. 37.85³ =
  38. 38.95³ =
  39. 39.35³ =
  40. 40.88³ =

Answer key

  1. 405224
  2. 68921
  3. 185193
  4. 12167
  5. 68921
  6. 5832
  7. 12167
  8. 157464
  9. 42875
  10. 4096
  11. 328509
  12. 4096
  13. 5832
  14. 456533
  15. 250047
  16. 103823
  17. 531441
  18. 4913
  19. 175616
  20. 3375
  21. 42875
  22. 753571
  23. 21952
  24. 140608
  25. 132651
  26. 29791
  27. 226981
  28. 46656
  29. 24389
  30. 42875
  31. 405224
  32. 941192
  33. 300763
  34. 97336
  35. 438976
  36. 551368
  37. 614125
  38. 857375
  39. 42875
  40. 681472

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