If you would like to make any corrections or additions to this page, or if
you can provide recordings, please contact me.
When counting one is uno, but with masculine nouns uno
becomes un, and it becomes una with feminine nouns. This also applies
to other numbers containing one, e.g. veintiún coches (21 cars),
veintiuna casas (21 houses).
100s also change to indicate gender, e.g. doscientos coches (200
cars), doscientas casas (200 houses).
Fullstops (periods) are used to separte thousands and commas for decimal
points, e.g. $1.234,50 = $1,234.50, except in Mexico, Central America and Puerto Rico.
The numbers from 16 to 19 and 21 to 29 used to be spelled diez y seis,
diez y siete, diez y ocho, veinte y uno, veinte y dos, etc.
The ordinal numbers above 10 are used mainly in formal writing. In speech
the cardinal numbers are generally used. E.g. the 20th century is usually
el siglo veinte / el siglo 20 rather than el siglo vigésimo.