I'm not German, but if I recall correctly: - "Eins" is for the actual number "one" - "Ein" is "a" for masculine/neuter genders - "Ein" is also used for expressi

I'm not German, but if I recall correctly: - "Eins" is for the actual number "one" - "Ein" is "a" for masculine/neuter genders - "Ein" is also used for expressing the amount, e.g. "ein Auto, zwei Autos" That said, high school was a long time ago, so I might be way off :)