tính 271 + 180
Giải thích
\(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{271}\\{180}\end{array}} \\\,\,\,\,451\end{array}\) | \(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{388}\\{\,\,\,20}\end{array}} \\\,\,\,\,408\end{array}\) | \(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{526}\\{426}\end{array}} \\\,\,\,\,952\end{array}\) | \(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{777}\\{\,\,\,50}\end{array}} \\\,\,\,\,827\end{array}\) | \(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{655}\\{250}\end{array}} \\\,\,\,\,905\end{array}\) | \(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{332}\\{181}\end{array}} \\\,\,\,\,513\end{array}\) |