NIVEAU 4 (CE1 - CE2)

Combinaison : [1,3,7,9] = 20

Calcul 1 Calcul 2 Calcul Final
1 + 3 = 4 7 + 9 = 16 4 + 16 = 20
1 + 7 = 8 3 + 9 = 12 8 + 12 = 20
1 + 9 = 10 3 + 7 = 10 10 + 10 = 20