a) \(0,3 = \dfrac{3}{10}\); \( 0,72 =\dfrac{72}{100}\);
\(1,5 =\dfrac{15}{10}\) ; \(9,347 =\dfrac{9347}{1000}\).
b) \(\dfrac{1}{2} = \dfrac{15}{10}\) ; \(\dfrac{2}{5} = \dfrac{4}{10}\) ;
\(\dfrac{3}{4}= \dfrac{75}{100}\) ; \(\dfrac{6}{25} = \dfrac{24}{100}\).