tính 49 + 27
36/44
\(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{49}\\{27}\end{array}} \\\,\,\,\,76\end{array}\) | \(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{66}\\{15}\end{array}} \\\,\,\,\,81\end{array}\) | \(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{34}\\{39}\end{array}} \\\,\,\,\,73\end{array}\) | \(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{19}\\{79}\end{array}} \\\,\,\,\,98\end{array}\) | \(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{58}\\{17}\end{array}} \\\,\,\,\,75\end{array}\) | \(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{23}\\{27}\end{array}} \\\,\,\,\,50\end{array}\) | \(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{73}\\{18}\end{array}} \\\,\,\,\,91\end{array}\) | \(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{15}\\{75}\end{array}} \\\,\,\,\,90\end{array}\) |