Spanish numbers

Cardinal numbers (números cardinales) express a quantity (how many).

They are used both as adjectives and pronouns. If they are placed before a noun, they are used as adjectives. 

Example: 

María tiene dos gatos. (María has got two cats.)

Spanish numbers 0-30

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Javier Á.

Ane C.

Laura M.

Jolanda F.

Guadalupe R.

María Jesús Á.

Paula C.

Juan Carlos O.

Claudia O.

Giada Z.

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Spanish numbers to 100

* From 31 onwards, use "y" to separate tens and units.

Spanish numbers to 1000

Spanish numbers to 1,000,000,000

* Unlike English, Spanish uses periods to indicate the value of units.

Numbers ending in uno (one)

If  a number ends in -uno, it agrees with the noun it precedes. The masculine form drops the -o, while the feminine turns into -una.

Examples: 

• Tengo sólo ventiún euros en la cartera. (I only have twenty-one euros in the wallet.)
• Hay treinta y una mochilas en esta tienda. (There are thirty-one backpacks in this shop.)

When not followed by a noun, a number ending in -uno does not change to un.

  Example: 

  A: "¿Cuantos estudiantes hay en esta biblioteca?" ("How many students are there in the library?")

  B: "Treinta y uno". (Thirty-one.)

Numbers ending in ciento (one hundred)

Numbers that end in ciento must agree with the nouns that follow them.

Example: 

Hay doscientas mujeres esperando a Enrique Iglesias. (There are two hundred women waiting for Enrique Iglesias.)

Cien is used before mil (thousand) and millones (million).

  Examples:

• Gastó cien mil euros en el casino. (He spent one hundred thousand euros in the casino.)
• Miguel tiene cien millones de euros en el banco. (Miguel has a hundred million euros in the bank.)

Uses of cardinal numbers