• 百円ひゃくえん — 100 yen
• 三百さんびゃく円 — 300 yen
• 百分率ひゃくぶんりつ — percentage
• 百貨店ひゃっかてん — department store
• 百均ひゃっきん — 100-yen shop
• 百戦錬磨ひゃくせんれんま — 百戦錬磨 — seasoned by many battles; veteran (literally “tempered by 100 battles”)
• 百発百中ひゃっぱつひゃくちゅう — unfailing accuracy; always hitting the mark

百華ひゃっか繚りょう乱らんという四字熟語よじゅくご：様々さまざまな花はなが咲さき乱みだれる様子ようす。 — A hundred flowers blooming in profusion” — it describes a scene where various flowers are blooming vibrantly and beautifully all at once.

百人力ひゃくにんりき — an idiomatic expression meaning someone or something is incredibly reliable or powerful — like the strength of 100 people.

彼かれがいれば 百人力ひゃくにんりきです。
With him around, it’s like having a hundred people on our side.

百回ひゃっかいやっても 失敗しっぱいするでしょう。
Even after trying a hundred times, you’ll probably fail.