%@metapost:5fractionsexo54.mp %@Auteur:Thierry Gauvin\par Effectue le coloriage correspondant aux fractions pour pouvoir trouver le résultat des opérations : \begin{multicols}{2} \begin{tabular}{>\centering m{2.5cm}@{+}>\centering m{2.5cm}@{= }m{2.5cm}} \includegraphics{5fractionsexo54.10}&\includegraphics{5fractionsexo54.10}&\includegraphics{5fractionsexo54.10}\\ $\dfrac{2}{4}$ & $\dfrac{1}{4}$ & $\dfrac{\ldots+\ldots}{\ldots}=\dfrac{\ldots}{\ldots}$ \end{tabular} \begin{tabular}{>\centering m{2.5cm}@{+}>\centering m{2.5cm}@{= }m{2.5cm}} \includegraphics{5fractionsexo54.14}&\includegraphics{5fractionsexo54.14}&\includegraphics{5fractionsexo54.14}\\ $\dfrac{5}{16}$ & $\dfrac{7}{16}$ & $\dfrac{\ldots+\ldots}{\ldots}=\dfrac{\ldots}{\ldots}$ \end{tabular} \vspace{.3cm} \begin{tabular}{>\centering m{2.5cm}@{+}>\centering m{2.5cm}@{= }m{2.5cm}} \includegraphics{5fractionsexo54.18}&\includegraphics{5fractionsexo54.18}&\includegraphics{5fractionsexo54.18}\\ $\dfrac{1}{8}$ & $\dfrac{4}{8}$ & $\dfrac{\ldots+\ldots}{\ldots}=\dfrac{\ldots}{\ldots}$ \end{tabular} \begin{tabular}{>\centering m{2.5cm}@{+}>\centering m{2.5cm}@{= }m{2.5cm}} \includegraphics{5fractionsexo54.22}&\includegraphics{5fractionsexo54.22}&\includegraphics{5fractionsexo54.22}\\ $\dfrac{1}{5}$ & $\dfrac{2}{5}$ & $\dfrac{\ldots+\ldots}{\ldots}=\dfrac{\ldots}{\ldots}$ \end{tabular} \end{multicols} \textbf{Complète la règle :} \begin{center} \psshadowbox{\begin{minipage}{0.9\linewidth} \textit {Quand les dénominateurs sont \ldots\ldots, on peut ajouter les \ldots\ldots\ldots. On ne change pas les \ldots\ldots\ldots.} \end{minipage} } \end{center}