Đặt tính rồi tính. (2 điểm) 78 967 × 25

78 967 × 25

\(\begin{array}{l} \times \begin{array}{*{20}{c}}{\,\,\,\,\,\,\,78\,\,967}\\{\underline {\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,25} }\end{array}\\\,\,\,\,\,\,\,394\,\,835\\\,\,\,\underline {1\,\,579\,\,34\,\,\,} \\\,\,\,1\,\,974\,\,175\end{array}\)

597 103 : 64

           597  103576¯649  329             21  1             19  2¯                1  90                1  28¯                    623                    576¯                       47 

578 984 154 + 35 012 678

\(\begin{array}{l} + \begin{array}{*{20}{c}}{578\,\,984\,\,154}\\{\underline {\,\,\,35\,\,012\,\,678} }\end{array}\\\,\,\,\,613\,\,996\,\,832\end{array}\)

237 590 319 - 99 687 543

\(\begin{array}{l} - \begin{array}{*{20}{c}}{237\,\,590\,\,319}\\{\underline {\,\,\,99\,\,687\,\,543} }\end{array}\\\,\,\,\,137\,\,902\,\,776\end{array}\)