Quick answer
"Diez" is an adjective which is often translated as "ten", and "cincuenta" is an adjective which is often translated as "fifty". Learn more about the difference between "diez" and "cincuenta" below.
diez(
dyehs
)
An adjective is a word that describes a noun (e.g. the big dog).
1. (number)
a. ten
Solo había diez personas en la oficina hoy a causa de la nieve.There were only ten people in the office today because of the snow.
A masculine noun is used with masculine articles and adjectives (e.g. el hombre guapo, el sol amarillo).
2. (number)
a. ten
Ella lleva un diez en su camiseta en honor a su jugadora favorita.She wears a ten on her jersey in honor of her favorite player.
b. tenth (in dates)
Celebraremos mi cumpleaños el diez de enero.We'll celebrate my birthday on the tenth of January.
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cincuenta(
seeng
-
kwehn
-
tah
)
An adjective is a word that describes a noun (e.g. the big dog).
1. (number)
a. fifty
Hay más o menos cincuenta casas en el barrio.There are more or less fifty houses in the neighborhood.
b. fiftieth (ordinal)
Hoy es el cincuenta aniversario del terremoto que destruyó la ciudad.Today is the fiftieth anniversary of the earthquake that destroyed the city.
A masculine noun is used with masculine articles and adjectives (e.g. el hombre guapo, el sol amarillo).
2. (number)
a. fifty
El número escrito en la pizarra es cincuenta.The number written on the chalkboard is fifty.
3. (decade)
a. fifties
Mis padres nacieron en los cincuenta.My parents were born in the fifties.
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