This article consists of several lessons on expressing how to inform time. Through chapter 4 page 33 in Minna no Nihongo, we can exercise to inform time with the available clock pictures which is provided as a question for practicising. To view the complete question or the pictures of the clock, please buy the original Minna no Nihongo book.
１． 07.30.
Answer I
Answer ：７時半です。
Hiragana：７じはんです。
Romaji :sichiji han desu.
Meaning：It’s seven and a half.
Answer II
Answer ：７時３０分です。
Hiragana：７じ３０ぷんです。
Romaji ：sichiji sanjyuppun desu.
Meaning：It’s seven thirty.
２． 12.15.
Answer ：１２時１５分です。
Hiragana：１２じ１５ふんです。
Romaji ：jyuuniji jyuugofun desu.
Meaning：It’s twelve and a quarter.
３． 14.45.
Answer：２時４５分です。
Hiragana：２じ４５ふんです。
Romaji：nijiyonjyuugofun desu.
Meaning：It’s two fortyfive.
４． 22.20.
Answer：１０時２０分です。
Hiragana：１０じ２０ふんです。
Romaji：jyuuji nijyuppun desu.
Meaning：It’s ten twenty.