English : Spanish
one = uno
two = dos
three = tres
four = cuatro
five = cinco
six = seis
seven = siete
eight = ocho
nine = nueve
ten = diez
eleven = once
twelve = doce
thirteen = trece
fourteen = catorce
fifteen = quince
sixteen = dieciséis
seventeen = diecisiete
eighteen = dieciocho
nineteen = diecinueve
twenty = veinte