What is one eighth of 100?

12.51/8 of 100 is 12.5.

To find the answer, divide the numerator by the denominator:

100 divided by 8 equals 12.5.

If you want to know what 3/8 of 100 is, divide 100 by 8 and then multiply the answer by 3, which is 37.5. You would use the same steps to find 1/9, 10/17, and any other fractions that you want to change into decimals.