NIVEAU 4 (CE1 - CE2)

Combinaison : [1,5,6,9] = 21

Calcul 1 Calcul 2 Calcul Final
1 + 5 = 6 6 + 9 = 15 6 + 15 = 21
1 + 6 = 7 5 + 9 = 14 7 + 14 = 21
1 + 9 = 10 5 + 6 = 11 10 + 11 = 21