tính 27 + 48

\(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{27}\\{48}\end{array}} \\\,\,\,\,75\end{array}\)

\(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{73}\\{35}\end{array}} \\\,\,\,\,38\end{array}\)

\(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{12}\\{48}\end{array}} \\\,\,\,\,60\end{array}\)

\(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{100}\\{\,\,\,38}\end{array}} \\\,\,\,\,\,\,\,62\end{array}\)