Basic German Vocabulary - What Are the Numbers Eleven to Twenty in German?

In this video, we learn the numbers (and how they are pronounced) from eleven to twenty in German as follows:
eleven - elf
twelve - zwölf
thirteen - dreizehn
fourteen - vierzehn
fifteen - fünfzehn
sixteen - sechzehn
seventeen - siebzehn
eighteen - achtzehn
nineteen - neunzehn
twenty - zwanzig