What are the units of money in South Korea?
Let's start with the coins first.
10 won (sheeb-wuhn) - worth about one cent (penny)
50 won (oh-sheeb-wuhn) - worth about five cents (nickel)
100 won (baeg-wuhn) - worth about ten cents (dime)
500 won (oh-baeg-wuhn) - worth about 50 cents (two quarters)
Now the paper money.
1000 won (chuhn-wuhn) - worth about one dollar (U.S. currency)
5000 won (oh-chuhn-wuhn) - worth about five dollars ($5)
10,000 won (mahn-wuhn) - worth about ten dollars ($10)
50,000 won (oh-mahn-wuhn) - worth about 50 dollars ($50)
100,000 won (sheeb-mahn-wuhn) - worth about 100 dollars ($100)
Starting at 100,000 won, money becomes a cashier's check and not a regular bill. You must have an ID and sign on the backside of the check to use it in Korea. Some places may not accept this type of money. Personal checks are very seldom used in Korea.