tính 820 - 608
Giải thích
\(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{820}\\{608}\end{array}} \\\,\,\,\,212\end{array}\) | \(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{821}\\{\,\,\,\,\,\,9}\end{array}} \\\,\,\,\,812\end{array}\) | \(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{403}\\{231}\end{array}} \\\,\,\,\,172\end{array}\) | \(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{684}\\{428}\end{array}} \\\,\,\,\,256\end{array}\) | \(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{943}\\{\,\,\,\,\,\,5}\end{array}} \\\,\,\,\,938\end{array}\) | \(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{436}\\{318}\end{array}} \\\,\,\,\,118\end{array}\) |