Jeu 1 :

Mes solutions :

980 = (7+7)×(50+100/(3+2))
980 = 7×(100+50−(7+3))
980 = 50+(100−7)×(7+3)
980 = (7+3)×(100−2)
980 = 7×(100×2−(50+7+3))
980 = 100×7×7/(3+2)
980 = 100×(50−7/7)/(3+2)