NIVEAU 5 (CE1 - CE2)

Combinaison : [1,4,8,9] = 21

Calcul 1 Calcul 2 Calcul Final
1 * 4 = 4 8 + 9 = 17 4 + 17 = 21
1 * 8 = 8 4 + 9 = 13 8 + 13 = 21
1 * 9 = 9 4 + 8 = 12 9 + 12 = 21