NIVEAU 4 (CE1 - CE2)

Combinaison : [2,5,6,7] = 20

Calcul 1 Calcul 2 Calcul Final
2 + 5 = 7 6 + 7 = 13 7 + 13 = 20
2 + 6 = 8 5 + 7 = 12 8 + 12 = 20
2 + 7 = 9 5 + 6 = 11 9 + 11 = 20