Questions about numbers:
Q: Why is it veintiún carros and NOT veintiuno carros?
When any number ending with the form uno (uno, veintiuno, treinta y uno, ciento uno, etc.), the "o" is dropped when it occurs directly before a masculine noun.
Q: Why is it ciento tres and NOT ciento y tres?
Do not use the conjunction y after the hundreds or thousands place, they are only used after the tens place.
Q: Why is it dieciséis and NOT diez y seis?
The numbers from 16-29 are written as one word. Note there are accents on some of these numbers so review the information given above if you are unsure.
Q: Why is it 1.436.700,75 and NOT 1,436,700.75?
Spanish uses periods to separate thousands and a comma to mark the decimal.
Q: Why is it hay mil doscientas mujeres and NOT hay un mil doscientos mujeres?
Do not use the article un before mil or cien and the hundreds from doscientas-novecientas have feminine forms that must be used before feminine nouns.
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