NIVEAU 4 (CE1 - CE2)

Combinaison : [1,4,7,9] = 21

Calcul 1 Calcul 2 Calcul Final
1 + 4 = 5 7 + 9 = 16 5 + 16 = 21
1 + 7 = 8 4 + 9 = 13 8 + 13 = 21
1 + 9 = 10 4 + 7 = 11 10 + 11 = 21