Question

transformando a fração 9
-
4 em numero decimal, teremos:

Answer 1

$\large\begin{array}{lr}\rm \dfrac{9}{4}=\dfrac{9}{2} \cdot \dfrac{1}{2} = \dfrac{4{,}5}{2} = (4 + 0{,}5 )\cdot \dfrac{1}{2} = \dfrac{4}{2} + \dfrac{0{,}5}{2} = 2 + 0{,}25 = 2{,}25 \end{array}$