They use a decimal point separating the fraction from the whole number, and without writing the denominator.
Decimal numbers make it easy to work with fractional amounts.
We show fractions of dollars using the decimal system. Each side of the fence is made up of ten boards. Jeff agreed with his dad to paint one half of the fence. So far Jeff has painted one side of the fence and three boards on another side. It takes 100 shingles to complete the roof.