%@Auteur:Véronique Glaçon\par \renewcommand{\arraystretch}{1.8} \[\begin{tabular}{|>{\centering}p{1cm}|>{\centering}p{1cm}|>{\centering}p{1cm}|>{\centering}p{1cm} |>{\centering}p{1cm}|>{\centering}p{1cm}|>{\centering}p{1cm}|>{\centering}p{1cm}|>{\centering}p{1cm}|} \hline $20$ & $\div$ & & $+$ & $4$ & $=$ & $14$ \tabularnewline \hline \LCC% & \gray & & \gray & & \gray & \\ $-$ & & $\times$ & & & & $-$ \tabularnewline \ECC \hline $8$ & $+$ & $9$ & $\div$ & & $=$ & $11$ \tabularnewline \hline \LCC% & \gray & & \gray & & \gray & \\ & & $\div$ & & & & $+$ \tabularnewline \ECC \hline $7$ & $+$ & & & $2$ & $=$ & $13$ \tabularnewline \hline \LCC% & \gray & & \gray & & \gray & \\ $=$ & & $=$ & & $=$ & & $=$ \tabularnewline \ECC \hline $19$ & $+$ & & $-$ & $9$ & $=$ & \tabularnewline \hline \end{tabular}\] \renewcommand{\arraystretch}{1}