How do you write -1/818 as a decimal?

1 Answer
Nov 30, 2016

-1/8 = -0.12518=0.125

Explanation:

Decimals can be negative or positive. In this case it will be negative.

Find an equivalent fraction with a denominator of a power of 10.
In this case we will use 10001000

-1/8 xx 125/125 = -125/100018×125125=1251000

This can now be written as a decimal with 3 decimal places (because we have thousandths.)

-125/1000 = -0.1251251000=0.125

Another method is to divide: -1 div 81÷8

" "-8|ul(1.0^(2)0^(4)0)
=" "-0.1color(white)(.)2color(white)(.)5

It is a huge advantage to know some of the more common fractions, decimals and percents by heart. These include the 'eighths'

1/8 = 0.125" "3/8 = 0.375" "5/8 = 0.625" "7/8 = 0.875