NIVEAU 5 (CE1 - CE2)

Combinaison : [1,6,7,8] = 21

Calcul 1 Calcul 2 Calcul Final
1 * 6 = 6 7 + 8 = 15 6 + 15 = 21
1 * 7 = 7 6 + 8 = 14 7 + 14 = 21
1 * 8 = 8 6 + 7 = 13 8 + 13 = 21