Điền số thích hợp vào ô trống a) \[\begin{array}{l} + \begin{array}{*{20}{c}}{3..,65}\\{\underline {1\,2,3..} }\end{array}\\\,\,\,\,\,..6,..6\end{array}\] b) \[\begin{array}{l} - \begin{array}{*{20}{c}}{1..\,\,4..4}\\{\underline {\,\,\,1\,\,\,..54} }\end{array}\\\,\,\,\,11\,\,\,10..\end{array}\]