Jeu 1 :

Mes solutions :

796 = 25+25+75×10−4
796 = 75+25×10×3−(25+4)
796 = 75×10+25×3−(25+4)
796 = 25×(25+10−3)−4
796 = 25×(25+10)−(75+4)
796 = 4+(25/25+10)×(75−3)