Đặt tính rồi tính. (2 điểm) 6 120 + 347 980

6 120 + 347 980

\[\begin{array}{l} + \begin{array}{*{20}{c}}{\,\,\,\,\,\,6\,\,120}\\{\underline {347\,\,980} }\end{array}\\\,\,\,\,\,354\,\,100\end{array}\]

654 012 - 32 970

\[\begin{array}{l} - \begin{array}{*{20}{c}}{654\,\,012}\\{\underline {\,\,\,\,32\,\,970} }\end{array}\\\,\,\,\,\,621\,\,042\end{array}\]

145 023 × 19

\[\begin{array}{l} \times \begin{array}{*{20}{c}}{\,\,\,\,\,145\,\,023}\\{\underline {\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,19} }\end{array}\\\,\,\,1\,\,305\,\,207\\\,\,\,\underline {1\,\,450\,\,23\,\,\,\,} \\\,\,2\,\,755\,\,437\end{array}\]

423 195 : 32