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Cubes of 2 Digit Numbers Worksheet

Vedic maths trick 17: Cubes of 2-digit numbers · Set 14 · 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. 1.51³ =
  2. 2.76³ =
  3. 3.69³ =
  4. 4.84³ =
  5. 5.95³ =
  6. 6.38³ =
  7. 7.71³ =
  8. 8.52³ =
  9. 9.16³ =
  10. 10.31³ =
  11. 11.31³ =
  12. 12.91³ =
  13. 13.85³ =
  14. 14.49³ =
  15. 15.13³ =
  16. 16.44³ =
  17. 17.33³ =
  18. 18.46³ =
  19. 19.47³ =
  20. 20.73³ =
  21. 21.37³ =
  22. 22.17³ =
  23. 23.75³ =
  24. 24.57³ =
  25. 25.67³ =
  26. 26.46³ =
  27. 27.26³ =
  28. 28.72³ =
  29. 29.46³ =
  30. 30.74³ =
  31. 31.73³ =
  32. 32.69³ =
  33. 33.53³ =
  34. 34.43³ =
  35. 35.91³ =
  36. 36.34³ =
  37. 37.91³ =
  38. 38.39³ =
  39. 39.24³ =
  40. 40.18³ =

Answer key

  1. 132651
  2. 438976
  3. 328509
  4. 592704
  5. 857375
  6. 54872
  7. 357911
  8. 140608
  9. 4096
  10. 29791
  11. 29791
  12. 753571
  13. 614125
  14. 117649
  15. 2197
  16. 85184
  17. 35937
  18. 97336
  19. 103823
  20. 389017
  21. 50653
  22. 4913
  23. 421875
  24. 185193
  25. 300763
  26. 97336
  27. 17576
  28. 373248
  29. 97336
  30. 405224
  31. 389017
  32. 328509
  33. 148877
  34. 79507
  35. 753571
  36. 39304
  37. 753571
  38. 59319
  39. 13824
  40. 5832

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