Đặt tính rồi tính:602 + 179 462 + 354 108 + 85 49 + 580

\[\begin{array}{l} + \begin{array}{*{20}{c}}{602}\\{\underline {179} }\end{array}\\\,\,\,\,781\end{array}\]

\[\begin{array}{l} + \begin{array}{*{20}{c}}{462}\\{\underline {354} }\end{array}\\\,\,\,\,816\end{array}\]

\[\begin{array}{l} + \begin{array}{*{20}{c}}{108}\\{\underline {\,\,\,85} }\end{array}\\\,\,\,\,193\end{array}\]

\[\begin{array}{l} + \begin{array}{*{20}{c}}{\,\,49}\\{\underline {580} }\end{array}\\\,\,\,\,629\end{array}\]