五毛 or 5毛 - 5 _mao_ is half a yuan, so the equivalent of 50¢. “Fifty cent” is an Americanized translation. Edit: the wiki page you linked has it in simplified a

五毛 or 5毛 - 5 _mao_ is half a yuan, so the equivalent of 50¢. “Fifty cent” is an Americanized translation. Edit: the wiki page you linked has it in simplified and traditional characters.