Please note: There is a short delay when playing the audio clips.
After thirty, you carry on saying the number of tens and then the number of units, but you write them as separate words.
treinta - thirty
treinta y uno - thirty-one
Now you know all the numbers you need to say dates!
Mi cumpleaños es el treinta y uno de diciembre. - My birthday is the 31st December.
What about prices, or door numbers though? It helps to know some bigger numbers.
cuarenta - forty
cincuenta - fifty
cincuenta y seis - fifty-six
sesenta - sixty
setenta - seventy
ochenta - eighty
noventa - ninety
noventa y nueve - ninety-nine
cien - one hundred
Did you see the pattern with the '-ty' numbers? From thirty to ninety, they all end -NTA.
La pelota cuesta dos euros sesenta. - The ball costs €2,60.
You have to pay particular attention to sesenta (sixty) and setenta (seventy) - they're easy to confuse!