The numbers in Spanish are straightforward with only a few spelling changes to remember.
The numbers from 0-30 are written as one word, for example: uno, dos, tres...veintiocho, veintinueve, treinta.
The numbers from 31-99 are written as three words separated by "y". For example: treinta y uno, treinta y dos, treinta y tres...noventa y siete, noventa y ocho, noventa y nueve.
99 is the last number to use "y" in it.
100 is simply "cien". When we add to 100, cien changes to ciento: ciento uno (101) ciento dos(102).
| cien |
| ciento uno |
| ciento dos |
| ciento tres |
| ciento cuatro |
| ciento cinco |
| ciento veintitrés |
| ciento cuarenta y ocho |
| ciento noventa y nueve |
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In writing numbers, Spanish commonly uses a period where English uses a comma, and vice-versa:
English: $121,250.50 = Spanish: $121.250,50 Remember this when you are shopping and looking at prices since in many Hispanic countries prices are in the hundreds or in the thousands (pesos, etc.) for regular items like foods, books, and clothing.
Years are not broken into two digit groups but are said as the entire number:
1989 (in English: Nineteen eighty-nine) is Mil novecientos ochenta y nueve.
Remember that any form of uno drops it's "o" when used as an adjective:
Hay veintiún estudiantes. Tengo treinta y un años. Hay ciento un perros.