tính 409 + 89
Giải thích
\(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{409}\\{\,\,\,89}\end{array}} \\\,\,\,\,498\end{array}\) | \(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{343}\\{572}\end{array}} \\\,\,\,\,915\end{array}\) | \(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{452}\\{452}\end{array}} \\\,\,\,\,904\end{array}\) | \[\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{735}\\{129}\end{array}} \\\,\,\,\,864\end{array}\] | \(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{379}\\{608}\end{array}} \\\,\,\,\,987\end{array}\) | \(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{370}\\{392}\end{array}} \\\,\,\,\,762\end{array}\) |