Đặt tính rồi tính: a) 112 × 4
Giải thích
\[\begin{array}{l} \times \begin{array}{*{20}{c}}{112}\\{\underline {\,\,\,\,\,\,4} }\end{array}\\\,\,\,448\end{array}\] | \[\begin{array}{l} \times \begin{array}{*{20}{c}}{283}\\{\underline {\,\,\,\,\,\,2} }\end{array}\\\,\,\,566\end{array}\] | \[\begin{array}{l} \times \begin{array}{*{20}{c}}{152}\\{\underline {\,\,\,\,\,\,3} }\end{array}\\\,\,456\end{array}\] |
