NIVEAU 5 (CE1 - CE2)

Combinaison : [1,7,8,9] = 25

Calcul 1 Calcul 2 Calcul Final
1 + 7 = 8 8 + 9 = 17 8 + 17 = 25
1 + 8 = 9 7 + 9 = 16 9 + 16 = 25
1 + 9 = 10 7 + 8 = 15 10 + 15 = 25