a) 

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

$0,6=\frac{6}{10}=\frac{3}{5}$

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

b) 

$0,36=\frac{36}{100}=\frac{9}{25}$

$0,08=\frac{8}{100}=\frac{2}{25}$

$0,60=\frac{60}{100}=\frac{6}{10}=\frac{3}{5}$

c) 

$0,358=\frac{358}{1000}=\frac{179}{500}$

$0,045=\frac{45}{1000}=\frac{9}{200}$

$0,06=\frac{6}{100}=\frac{3}{50}$

d)

$0,375=\frac{375}{1000}=\frac{3}{8}$

$0,625=\frac{625}{1000}=\frac{5}{8}$

$0,048=\frac{48}{1000}=\frac{6}{125}$