Translation guide
The number 100. In Japanese, this is expressed with the native word 百 (ひゃく) or combined with other numbers. There are some sound changes to be aware of when counting.
百
one hundred
Expressing the exact number one hundred.
The standard word for 100. Used in counting, prices, ages, etc.
りんごが百個あります。
There are 100 apples.
この本は百ページです。
This book is 100 pages.
Expressing multiples of 100.
Combine a number from 2 to 9 with 百. Note the sound changes: 三百 is さんびゃく, 六百 is ろっぴゃく, 八百 is はっぴゃく, etc.
Expressing approximate large numbers or emphasizing a large quantity.
Means 'hundreds of'. Used to indicate an unspecified large number in the hundreds.
何百人もの人が集まった。
Hundreds of people gathered.
Means 'several hundred'. More formal/literary than 何百.
Using 'hundred' in expressions meaning 'many' or 'all kinds of'.
Literally 'knowing a hundred', meaning 'knowing full well'. Used when someone is already well aware of something.
そんなことは百も承知だ。
I know that perfectly well.
Proverb: 'Seeing is believing' (literally: hearing a hundred times is not as good as seeing once).
百聞は一見に如かず、実際に行ってみよう。
Seeing is believing; let's actually go and see.
When 百 follows certain numbers, its pronunciation changes. 三百 is さんびゃく (not さんひゃく), 六百 is ろっぴゃく, 八百 is はっぴゃく, and 一千 is not used (use 千 instead).
When counting objects, 百 is combined with counters: 百個 (ひゃっこ, 100 small items), 百人 (ひゃくにん, 100 people), 百匹 (ひゃっぴき, 100 small animals). Note the sound changes in the counter itself.
It's a building from several hundred years ago.