NIVEAU 4 (CE1 - CE2)

Combinaison : [1,2,6,7] = 15

Calcul 1 Calcul 2 Calcul Final
1 * 2 = 2 6 + 7 = 13 2 + 13 = 15
1 * 6 = 6 2 + 7 = 9 6 + 9 = 15
1 * 7 = 7 2 + 6 = 8 7 + 8 = 15