In this lesson you learn to count from 16 to 29 in Spanish. You'll see that from 16 onward there is a regularity in counting. From 30 onward, slightly different rules apply, which luckily also follow a regular pattern.
| 0 - cero | 10 - diez | 20 - veinte |
| 1 - uno | 11 - once | 21 - veintiuno |
| 2 - dos | 12 - doce | 22 - veintidós |
| 3 - tres | 13 - trece | 23 - veintitrés |
| 4 - cuatro | 14 - catorce | 24 - veinticuatro |
| 5 - cinco | 15 - quince | 25 - veinticinco |
| 6 - seis | 16 - dieciséis | 26 - veintiséis |
| 7 - siete | 17 - diecisiete | 27 - veintisiete |
| 8 - ocho | 18 - dieciocho | 28 - veintiocho |
| 9 - nueve | 19 - diecinueve | 29 - veintinueve |
You have already learned that one before a masculine noun becomes un and before a feminine noun becomese una. The same principle applies to numbers that end in uno.
| the twenty-one books | los veintiún libros |
| the twenty-one houses | las veintiunas casas |
