\exercice* { \psset{nodesepA = -1.5mm, linewidth = 0.6pt, linestyle = dotted, vref = -0.8mm} Effectuer les conversions suivantes : \begin{multicols}{2}\noindent \begin{enumerate} \item 86~hm=8\,600~m\par \begin{tabular}{c|c|c|c|c|c|c} km & hm & dam & m & dm & cm & mm \\ \hline 8 & 6\Rnode{virg0}{\ }& 0& {0\Rnode{virg1}{\textcolor{red}{ \LARGE ,}}}& 0& 0& 0 \end{tabular} \ncline{->}{virg0}{virg1} \item 46,5~L=465~dL\par \begin{tabular}{c|c|c|c|c|c} hL & daL & L & dL & cL & mL \\ \hline 0 & 4& 6\Rnode{virg0}{\ }& {5\Rnode{virg1}{\textcolor{red}{ \LARGE ,}}}& 0& 0 \end{tabular} \ncline{->}{virg0}{virg1} \item 91,7~dL=0,917~daL\par \begin{tabular}{c|c|c|c|c|c} hL & daL & L & dL & cL & mL \\ \hline 0 & {0\Rnode{virg1}{\textcolor{red}{ \LARGE ,}}}& 9& 1\Rnode{virg0}{\ }& 7& 0 \end{tabular} \ncline{->}{virg0}{virg1} \item 91,8~cg=0,091\,8~dag\par \begin{tabular}{c|c|c|c|c|c|c} kg & hg & dag & g & dg & cg & mg \\ \hline 0 & 0& {0\Rnode{virg1}{\textcolor{red}{ \LARGE ,}}}& 0& 9& 1\Rnode{virg0}{\ }& 8 \end{tabular} \ncline{->}{virg0}{virg1} \item 75,7~dag=0,757~kg\par \begin{tabular}{c|c|c|c|c|c|c} kg & hg & dag & g & dg & cg & mg \\ \hline {0\Rnode{virg1}{\textcolor{red}{ \LARGE ,}}} & 7& 5\Rnode{virg0}{\ }& 7& 0& 0& 0 \end{tabular} \ncline{->}{virg0}{virg1} \item 49,1~cg=0,491~g\par \begin{tabular}{c|c|c|c|c|c|c} kg & hg & dag & g & dg & cg & mg \\ \hline 0 & 0& 0& {0\Rnode{virg1}{\textcolor{red}{ \LARGE ,}}}& 4& 9\Rnode{virg0}{\ }& 1 \end{tabular} \ncline{->}{virg0}{virg1} \end{enumerate} \end{multicols} {