The number for one in Spanish is uno. It loses its o and becomes un when used before a masculine noun.
When used before a feminine noun it changes to una.
For example:
un niño - one boy
una niña - one girl
You should use uno when counting generically, as in:
uno, dos, tres, cuatro - one, two, three, four
You should use un or una when counting specifically, as in:
un plátano, una manzana - one banana, one apple
Now that you know the various forms of one in Spanish and when to use them, let´s look at the Numbers from 1 to 100 in Spanish!
Cardinal Numbers - 0 to 10
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| 1 |
uno |
6 |
seis |
| 2 |
dos |
7 |
siete |
| 3 |
tres |
8 |
ocho |
| 4 |
cuatro |
9 |
nueve |
| 5 |
cinco |
10 |
diez |
Cardinal Numbers - 11 to 20
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| 11 |
once |
16 |
dieciséis |
| 12 |
doce |
17 |
diecisiete |
| 13 |
trece |
18 |
dieciocho |
| 14 |
catorce |
19 |
diecinueve |
| 15 |
quince |
20 |
veinte |
The Spanish numbers 16 through to 19 are actually contractions.
For example, the Spanish for 16 - dieciséis - literally means ten and six, but is joined together, as shown below:
dieciséis = diez y seis
diecisiete = diez y siete
dieciocho = diez y ocho
diecinueve = diez y nueve
For cardinal numbers (one, two, etc.) usually one-word forms are used from zero to 30, after which multiple word forms are used:
Cardinal Numbers - 40 to 90
Let us now look at the Spanish numbers, going up in tens, from 40 to 90.
cuarenta - 40 setenta - 70
cincuenta - 50 ochenta - 80
sesenta - 60 noventa - 90
With these, you just have to add ... y uno, ... y dos, ... y tres onto them and they are not usually done as contractions. For example:
cuarenta y uno - 41
cuarenta y dos - 42
cuarenta y tres - 43
cuarenta y cuatro - 44
cuarenta y cinco - 45
This pattern continues all the way up to 99, which brings us up to our final number for this page - one hundred!
Cardinal Numbers - 100
The Spanish number for one hundred is cien and sometimes ciento.
When there is exactly one hundred of something and the number is used with the noun - be it masculine or feminine - use the shortened form cien. For example:
cien euros - 100 euros
cien libras - 100 pounds
