# Explanation

Just like in English, Spanish *cardinal numbers* (**números cardinales**) can be both nouns and adjectives. But before we get into that, let's learn how to say *the numbers in Spanish from 0 to 100* (**los números de cero a cien**).

Cardinal numbers denote quantity, as opposed to order. To talk about order, you can use ordinal numbers.

## Basic Cardinal Number Forms

Here are the numbers from 0 to 20, as well as the multiples of 10 from 10 to 100.

Numeral | Spanish | Numeral | Spanish |
---|---|---|---|

0 | 15 | ||

1 | 16 | ||

2 | 17 | ||

3 | 18 | ||

4 | 19 | ||

5 | 20 | ||

6 | 30 | ||

7 | 40 | ||

8 | 50 | ||

9 | 60 | ||

10 | 70 | ||

11 | 80 | ||

12 | 90 | ||

13 | 100 | cien/ ciento | |

14 |

## Twenties

The numbers from 21 to 29 use a combination of **veinti-** and a number from 1-9 (with no space in between).

Numeral | Spanish |
---|---|

21 | |

22 | |

23 | |

24 | |

25 | |

26 | |

27 | |

28 | |

29 |

Note that **veintidós, veintitrés**, and **veintiséis** and have an accent on the last syllable.

## 31-99

Forming the numbers from 31 to 99 is a cinch. You just use a multiple of 10 plus the conjunction **y** and a number from 1 to 9. Here are some examples.

Numeral | Spanish |
---|---|

31 | |

42 | |

53 | |

64 | |

75 | |

86 | |

97 |

## When to Use Cardinal Numbers

Besides being used to simply count, cardinal numbers are used in Spanish to tell the time and talk about dates and age.

### Telling Time

To tell the time in Spanish, you use the verb **ser**, a feminine definite article (**la** or **las**), and a cardinal number.

### Dates

To talk about dates, use the masculine singular definite article (**el**) and a cardinal number.

To talk about the first of the month, you use the ordinal number **primero**(*first*) instead of the cardinal number **uno**.

examples |
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### Age

To talk about age, use the verb **tener**and a cardinal number.

examples |
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## Cardinal Numbers as Adjectives

As mentioned before, cardinal numbers can be both nouns and adjectives. When a cardinal number is used as an adjective, it doesn't change to match the gender or number of the noun it modifies except in the cases of **uno** and **cien**.

### Uno

**Uno** becomes **un**when used to describe masculine nouns and **una**when used to describe feminine nouns. Numbers ending in **uno** (**veintiuno, treinta y uno**, etc.) also undergo these changes.

### Cien

**Cien** changes to **ciento** in numbers above 100 and changes according to the gender of the noun.

examples |
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Would you like to review more numbers? Check out the following articles!

**Cardinal Numbers**with our interactive video lessons.