

クラスの四分の一が風邪で休んでいます。
テストの問題の四分の一しかできませんでした。
ねえ、ピザの四分の一を食べてもいい?
"よんぶんのいち(四分の一)" is in the lesson "Education" (Level 35), along with 10 other useful words. LinDuo has 180 topic lessons like this one, 2,379 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.