Jeu 1 :

Mes solutions :

964 = 4×(50×(2+2+1)−9)
964 = 4+(50−2)×2×(9+1)
964 = 4+2×(50−2)×(9+1)
964 = 4×(50×(2×2+1)−9)
964 = (2+2)×(50×(4+1)−9)
964 = 2×2×(50×(4+1)−9)

On étudie les probabilités au cycle 4.