NIVEAU 6 (CE1 - CE2)

Combinaison : [2,3,7,9] = 10

Calcul 1 Calcul 2 Calcul Final
3 * 7 = 21 2 + 9 = 11 21 - 11 = 10
7 + 9 = 16 2 * 3 = 6 16 - 6 = 10