NIVEAU 5 (CE1 - CE2)

Combinaison : [1,5,5,7] = 17

Calcul 1 Calcul 2 Calcul Final
1 * 5 = 5 5 + 7 = 12 5 + 12 = 17
1 * 7 = 7 5 + 5 = 10 7 + 10 = 17
5 * 5 = 25 1 + 7 = 8 25 - 8 = 17