tính 27 + 64
30/44
\(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{27}\\{64}\end{array}} \\\,\,\,\,91\end{array}\) | \(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{36}\\{34}\end{array}} \\\,\,\,\,70\end{array}\) | \(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{24}\\{56}\end{array}} \\\,\,\,\,80\end{array}\) | \(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{27}\\{23}\end{array}} \\\,\,\,\,50\end{array}\) | \(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{35}\\{39}\end{array}} \\\,\,\,\,74\end{array}\) | \(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{16}\\{39}\end{array}} \\\,\,\,\,55\end{array}\) | \(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{54}\\{19}\end{array}} \\\,\,\,\,73\end{array}\) | \(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{26}\\{37}\end{array}} \\\,\,\,\,63\end{array}\) |