Jeu 1 :

Mes solutions :

835 = 100×10−(50+5)×(2+1)
835 = (100×50+10)/(5+2−1)
835 = 100+(10+5)×(50−1)
835 = 100+(10×2−5)×(50−1)
835 = 100+(10+5)×(50+1−2)
835 = (100×50+10)/(5+1)