NIVEAU 4 (CE1 - CE2)

Combinaison : [1,3,3,9] = 15

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