Master "10000" in Japanese — the most important large number that shapes how Japanese people think about money, population, and quantities.
Here are 5 practical examples in polite everyday Japanese:
"Man" (万) is the Japanese counting unit for 10,000. This is fundamentally different from Western counting, which groups by thousands. Here's how the "man" system works:
This is why Japanese banknotes go up to 10,000 yen — it's the base unit of large transactions. If you're visiting Japan, mastering "man" is non-negotiable for understanding prices, salaries, and population figures.
Now that you've conquered the entire number chain from 1 to 10 to 100 to 1000 to 10,000, you've built the complete foundation of Japanese numeracy.
The "ichiman en satsu" (一万円札) — the 10,000-yen bill — is the highest denomination of Japanese currency in regular circulation. It features Fukuzawa Yukichi, the founder of Keio University and one of Japan's most influential intellectuals who modernized the nation during the Meiji Restoration. Carrying a few of these bills is standard for any Japanese person, and they're accepted everywhere from tiny ramen shops to luxury department stores.
In Japanese business culture, "man-en" (万円) is the default unit for discussing salaries, rent, and major purchases. When a Japanese person says their rent is "8 man," they mean 80,000 yen (about $520 USD). When they talk about a "30-man salary," that's 300,000 yen per month — a solid middle-class income. The "man" unit is so embedded in daily life that Japanese people often struggle to convert prices into foreign currencies that use the thousand-based system.
The concept of 10,000 also appears in the famous Japanese saying "ichi-man kai no shippai kara, ichi-kai no seikou ga umareru" (一万回の失敗から、一回の成功が生まれる) — "From ten thousand failures, one success is born." This philosophy of persistence through massive repetition is central to Japanese craftsmanship traditions like kaizen (continuous improvement). It's also why Japanese athletes, artists, and craftsmen are known for their obsessive dedication — the idea that mastery requires ten thousand repetitions is practically a national belief. Even Hideo Kojima, the legendary game designer behind Metal Gear Solid, famously said he went through "ten thousand" iterations to perfect his storytelling craft.
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