NIVEAU 5 (CE1 - CE2)

Combinaison : [1,1,3,3] = 9

Calcul 1 Calcul 2 Calcul Final
1 * 1 = 1 3 * 3 = 9 1 * 9 = 9
1 * 3 = 3 1 * 3 = 3 3 * 3 = 9