a) \(\dfrac{3}{10}= 0,3 \) ; \(\dfrac{3}{100}= 0,03\) ;
\(4\dfrac{25}{100}= 4,25\) ; \(\dfrac{2002}{1000}= 2,002 \).
b) \(\dfrac{1}{4}=\dfrac{25}{100}=0,25\) ;
\(\dfrac{3}{5}= \dfrac{6}{10}= 0,6\)
\(\dfrac{7}{8} = \dfrac{7 \times 125}{8 \times 125} = \dfrac{875}{1000} = 0,875\);
\(1\dfrac{1}{2} = 1\dfrac{5}{10}= 1,5\) .