tính 780 - 508
Giải thích
\(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{780}\\{508}\end{array}} \\\,\,\,\,272\end{array}\) | \(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{917}\\{\,\,\,\,\,\,8}\end{array}} \\\,\,\,\,909\end{array}\) | \(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{783}\\{\,\,\,92}\end{array}} \\\,\,\,\,691\end{array}\) | \(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{636}\\{\,\,\,56}\end{array}} \\\,\,\,\,580\end{array}\) | \(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{437}\\{377}\end{array}} \\\,\,\,\,\,\,\,60\end{array}\) | \(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{318}\\{183}\end{array}} \\\,\,\,\,135\end{array}\) |