jednostka: (0,5-0):10=0,5:10=0,05

$0,05=\frac{5}{100}=\frac{1}{20}$

$0,1=\frac{1}{10}$

$0,15=\frac{15}{100}=\frac{3}{20}$

$0,2=\frac{2}{10}=\frac{1}{5}$

$0,25=\frac{25}{100}=\frac{1}{4}$

$0,3=\frac{3}{10}$

$0,35=\frac{35}{100}=\frac{7}{20}$

$0,4=\frac{4}{10}=\frac{2}{5}$

$0,45=\frac{45}{100}=\frac{9}{20}$

$0,5=\frac{5}{10}=\frac{1}{2}$

$0,55=\frac{55}{100}=\frac{11}{20}$