Dollars and cents are written together. Thus, two dollars and sixteen
cents is written, $2.16.
The dollars are separated from the cents by a period. If the number of
cents is less than ten, the tens’ place is filled by a 0. Thus, we write
twenty dollars and two cents, $20.02.
Mills, or tenths of a cent, are written to the right of the cents. Five
dollars, six cents, four mills is written, $5.064.
NOTE.--The rules and processes of decimals apply to the addition,
subtraction, multiplication, and division of United States money.