Okay, so I'm not having trouble with the numbers themselves, I do know them, but one thing confuses me; why is it that I must include the der, die, or das for it? It askes me to translate (for example) 'the seventeen', rather than just 'seventeen', or 'the six' rather than 'six'. Is there any reason for this?
I do not known. But numbers can be nouns. If they are used as noun you have to know the right articel. But when I think about it they are all femal, so it doesn`t make sense. In colloquial language numbers are often used without articles.
In general numerals get the die article. The article is more useful for when it is in a sentence and you just need to know the gender to properly use it. So i consider it more for sentence grammar rather than actually saying 'the six' instead of 'six'.
seventeen is just siebzehn. If you want to say "the 17" you mean "the (number) 17)" so it's "die siebzehn" as a special one.
Sometimes DL is a bit weird. Of course do we Germans count "eins, zwei, drei, ...". There is no way you will find one counting "die Eins, die Zwei, die Drei,...".
Leonie - I don't know why anyone would down-vote your answer. I up-voted and give you a Lingot.