NIVEAU 3 (CE1 - CE2)

Combinaison : [1,2,7,8] = 18

Calcul 1 Calcul 2 Calcul Final
1 + 2 = 3 7 + 8 = 15 3 + 15 = 18
1 + 7 = 8 2 + 8 = 10 8 + 10 = 18
1 + 8 = 9 2 + 7 = 9 9 + 9 = 18