NIVEAU 7 (CM1 - CM2)

Combinaison : [1,4,5,9] = 41

Calcul 1 Calcul 2 Calcul Final
1 * 5 = 5 4 * 9 = 36 5 + 36 = 41
5 * 9 = 45 1 * 4 = 4 45 - 4 = 41