Convert mixed number to fraction.
$$\dfrac{ 45 }{ 100 }$$ .Simplify $ \dfrac{ 45 }{ 100 } $ by dividing both 45 and 100 by their GCD, which is 5. GCD(45, 100) = 5.
$$ \frac{ 45 }{ 100 } = \frac{ 45 : \color{blue}{ 5 } }{ 100 : \color{blue}{ 5 } } = \frac{ 9 }{ 20 } $$