A dollar is made up of exactly 20 nickels. Each nickel is worth 5 cents, while a dollar is made up of 100 cents. There are 20 nickels in dollar because 20 multiplied by 5 equals 100.
The nickel is the second-lowest denomination coin in the US currency system, after the penny, which has a denomination of one cent. A nickel is mostly made up of copper, but it also contains approximately 25% nickel. In 1866, the first official nickel was produced. The silver half dime, on the other hand, was a previous coin that had been around since the late 1800s. Because a dime is worth ten cents, a nickel is also worth ten cents.