Money and Banking
Many business transactions done in the United States require knowledge of commerce and banking. You must be 18 years of age to establish an account, or else a parent or guardian will have to complete the necessary forms on your behalf.
The US Monetary System is a decimal system, with one dollar equal to one hundred cents. One dollar is written as $1 or $1.00. One cent is written as 1¢. One dollar and twenty-five cents would be written as $1.25. Dollar amounts are written with a comma every three digits, so one thousand dollars would be written as $1,000.00.Paper currency is used for amounts of $1 or more, and coins are used for amounts under $1.