

Mein Opa ist neunzig Jahre alt.
[ˈmaɪ̯n ˈoːpaː ˈɪst ˈnɔɪ̯ntsɪç ˈjaːrə ˈalt.]
My grandpa is ninety years old.
Ein Fußballspiel dauert neunzig Minuten.
[ˈaɪ̯n ˈfuːsbalˌʃpiːl ˈdaʊ̯ɐt ˈnɔɪ̯ntsɪç miˈnuːtn̩.]
A football match lasts ninety minutes.
Kostet der Kurs wirklich neunzig Euro?
[ˈkɔstət deːɐ ˈkʊrs ˈvɪrklɪç ˈnɔɪ̯ntsɪç ˈɔɪ̯ro?]
Does the course really cost ninety euros?
"neunzig" is in the lesson "Big numbers" (Level 4), along with 11 other useful words. LinDuo has 180 topic lessons like this one, 2,375 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.