Respuesta :
In general to make a Spanish noun plural add an "ES" is the noun ends in a vowel then add "S". Silla----->Sillas Teciado-------->Teciados Cartel-------->Carteles
Singular nouns that end in "Z" change the "Z" to a "CES" in the plural.
El Lapiz--------->Los Lapices
Singular nouns that end in "Z" change the "Z" to a "CES" in the plural.
El Lapiz--------->Los Lapices