Đặt tính rồi tính: a) 14 × 7
Giải thích
a) \[\begin{array}{l} \times \begin{array}{*{20}{c}}{\,14}\\{\underline {\,\,\,7} }\end{array}\\\,\,\,\,98\end{array}\] | b) \[\begin{array}{l} \times \begin{array}{*{20}{c}}{\,\,\,17}\\{\underline {\,\,\,\,\,\,\,6} }\end{array}\\\,\,\,\,102\end{array}\] | c) 444¯222 04 4¯ 0 | d) 726¯324 12 12¯ 0
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