tính 982 - 778

\(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{982}\\{778}\end{array}} \\\,\,\,\,204\end{array}\)

\(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{744}\\{\,\,\,28}\end{array}} \\\,\,\,\,772\end{array}\)

\(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{829}\\{\,\,\,65}\end{array}} \\\,\,\,\,764\end{array}\)

\(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{919}\\{\,\,\,74}\end{array}} \\\,\,\,\,993\end{array}\)