# Decimal and unit fractions

You know that a fraction is a part of a whole. Learn what unit fractions and decimal fractions are!

## Notes

Learn decimal fractions and unit fractions

Fractions have a numerator and a denominator.

When the denominator is 10, the fraction is a decimal fraction.

A unit fraction is a fraction where the numerator is 1. A unit fraction is one part of a whole.

## Decimal fractions

Fractions have a numerator and a denominator. When the denominator is 10, the fraction is a decimal fraction.

Decimal fractions have 10, 100 or 1000 as a denominator. When the whole is a power of 10, you have special fractions: you can write them as decimal numbers.

£$\dfrac{1}{10} = 0{.}1 =$£ one tenth

£$\dfrac{4}{100} = 0{.}04 =$£ four hundredths

£$\dfrac{3}{1000} = 0{.}003 =$£ three thousandths