tính 402 + 88

\(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{402}\\{\,\,\,88}\end{array}} \\\,\,\,\,490\end{array}\)

\(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{593}\\{355}\end{array}} \\\,\,\,\,948\end{array}\)

\(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{578}\\{260}\end{array}} \\\,\,\,\,838\end{array}\)

\(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{607}\\{\,\,\,25}\end{array}} \\\,\,\,\,632\end{array}\)

\(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{265}\\{\,\,\,72}\end{array}} \\\,\,\,\,337\end{array}\)

\(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{116}\\{\,\,\,78}\end{array}} \\\,\,\,\,194\end{array}\)