tính 581 + 173

\(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{581}\\{173}\end{array}} \\\,\,\,754\end{array}\)

\(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{608}\\{\,\,\,77}\end{array}} \\\,\,\,\,685\end{array}\)

\(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{368}\\{250}\end{array}} \\\,\,\,\,618\end{array}\)

\(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{336}\\{329}\end{array}} \\\,\,\,\,665\end{array}\)

\(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{154}\\{\,\,\,\,\,6}\end{array}} \\\,\,\,\,160\end{array}\)

\(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{265}\\{572}\end{array}} \\\,\,\,\,837\end{array}\)