Write the fractions as percentages.

a) [[$ \displaystyle\frac {18} {100} = $]] [[$ \% $]]

b) [[$ \displaystyle\frac {1} {5} = $]] [[$ \% $]]

c) [[$ \displaystyle\frac {11} {20} = $]] [[$ \% $]]

d) [[$ \displaystyle\frac {1} {8} = $]] [[$ \% $]]