NIVEAU 4 (CE1 - CE2)

Combinaison : [1,3,6,6] = 15

Calcul 1 Calcul 2 Calcul Final
1 * 3 = 3 6 + 6 = 12 3 + 12 = 15
1 * 6 = 6 3 + 6 = 9 6 + 9 = 15