NIVEAU 5 (CE1 - CE2)

Combinaison : [1,2,7,8] = 17

Calcul 1 Calcul 2 Calcul Final
1 * 2 = 2 7 + 8 = 15 2 + 15 = 17
1 * 7 = 7 2 + 8 = 10 7 + 10 = 17
1 * 8 = 8 2 + 7 = 9 8 + 9 = 17