NIVEAU 4 (CE1 - CE2)

Combinaison : [1,4,7,8] = 20

Calcul 1 Calcul 2 Calcul Final
1 + 4 = 5 7 + 8 = 15 5 + 15 = 20
1 + 7 = 8 4 + 8 = 12 8 + 12 = 20
1 + 8 = 9 4 + 7 = 11 9 + 11 = 20