Đặt tính rồi tính 76,58 + 9,72

\[\begin{array}{l} + \begin{array}{*{20}{c}}{76,58}\\{\underline {\,\,\,\,9,72} }\end{array}\\\,\,\,\,\,\,86,3\end{array}\]

\[\begin{array}{l} + \begin{array}{*{20}{c}}{\,\,6,71}\\{\underline {12,\,9\,\,\,} }\end{array}\\\,\,\,\,19,61\end{array}\]

\[\begin{array}{l} - \begin{array}{*{20}{c}}{912,4}\\{\underline {\,\,\,\,\,\,78,23} }\end{array}\\\,\,\,\,\,\,\,834,17\end{array}\]

\[\begin{array}{l} - \begin{array}{*{20}{c}}{83,27}\\{\underline {19,54} }\end{array}\\\,\,\,\,63,73\end{array}\]