NIVEAU 4 (CE1 - CE2)

Combinaison : [1,2,8,9] = 20

Calcul 1 Calcul 2 Calcul Final
1 + 2 = 3 8 + 9 = 17 3 + 17 = 20
1 + 8 = 9 2 + 9 = 11 9 + 11 = 20
1 + 9 = 10 2 + 8 = 10 10 + 10 = 20