tính 720 - 218

\(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{720}\\{218}\end{array}} \\\,\,\,\,502\end{array}\)

\(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{319}\\{\,\,\,51}\end{array}} \\\,\,\,\,370\end{array}\)

\(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{698}\\{579}\end{array}} \\\,\,\,\,119\end{array}\)

\(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{445}\\{262}\end{array}} \\\,\,\,\,707\end{array}\)