1/8+1/2
\(\begin{array}{lcl} \frac{1}{8} + \frac{1}{2}\\\\ &=& \frac{1}{8} + \frac{1}{2}\cdot \frac{4}{4}\\\\ &=& \frac{1}{8} + \frac{4}{8}\\\\ &=& \frac{5}{8}\\\\ &=& 0.625 \end{array}\)
