NIVEAU 5 (CE1 - CE2)

Combinaison : [1,3,8,9] = 20

Calcul 1 Calcul 2 Calcul Final
1 * 3 = 3 8 + 9 = 17 3 + 17 = 20
1 * 8 = 8 3 + 9 = 12 8 + 12 = 20
1 * 9 = 9 3 + 8 = 11 9 + 11 = 20