Numbers - Counting in Spanish
I have seen the number 31, written like treinta y uno and treintauno, are they both correct? Is all Spanish counted like thirty and one in stead of thirty one like we would say in English? Thanks, Gracias ;)

Question

Numbers - Counting in Spanish
I have seen the number 31, written like  treinta y uno and treintauno, are they both correct? Is all Spanish counted like thirty and one in stead of thirty one like we would say in English? Thanks, Gracias ;)

Answer

The correct form is "treinta y uno", but in the spoken language, you can hear contractions as "trentidós" or "trentitrés", but the correct way to write it as separate words. This is a rule for all numbers  EXCEPT with the 20's. With this series, you can write " ventiuno, ventidos, ventitrés, venticuatro, venticinco, ventiseis, ventisiete, ventiocho, ventinueve", but it is because of the ending in "e" which together with the conjunction "y" would create a very long and stressful sound ( veinte y uno), that almost nobody uses.

Answer

http://www.jvlnet.com/~liliana/Spanish_Numbers.html

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