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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 84 · 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. 1.26³ =
  2. 2.31³ =
  3. 3.47³ =
  4. 4.93³ =
  5. 5.71³ =
  6. 6.73³ =
  7. 7.97³ =
  8. 8.21³ =
  9. 9.58³ =
  10. 10.73³ =
  11. 11.29³ =
  12. 12.51³ =
  13. 13.67³ =
  14. 14.31³ =
  15. 15.75³ =
  16. 16.95³ =
  17. 17.69³ =
  18. 18.25³ =
  19. 19.81³ =
  20. 20.55³ =
  21. 21.76³ =
  22. 22.31³ =
  23. 23.28³ =
  24. 24.97³ =
  25. 25.92³ =
  26. 26.14³ =
  27. 27.34³ =
  28. 28.42³ =
  29. 29.58³ =
  30. 30.23³ =
  31. 31.79³ =
  32. 32.83³ =
  33. 33.99³ =
  34. 34.22³ =
  35. 35.64³ =
  36. 36.21³ =
  37. 37.51³ =
  38. 38.24³ =
  39. 39.38³ =
  40. 40.27³ =

Answer key

  1. 17576
  2. 29791
  3. 103823
  4. 804357
  5. 357911
  6. 389017
  7. 912673
  8. 9261
  9. 195112
  10. 389017
  11. 24389
  12. 132651
  13. 300763
  14. 29791
  15. 421875
  16. 857375
  17. 328509
  18. 15625
  19. 531441
  20. 166375
  21. 438976
  22. 29791
  23. 21952
  24. 912673
  25. 778688
  26. 2744
  27. 39304
  28. 74088
  29. 195112
  30. 12167
  31. 493039
  32. 571787
  33. 970299
  34. 10648
  35. 262144
  36. 9261
  37. 132651
  38. 13824
  39. 54872
  40. 19683

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