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diff --git a/3ePasserelles/Calcul_Mental/P4/CM_18_03_19-3.tex b/3ePasserelles/Calcul_Mental/P4/CM_18_03_19-3.tex
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+\documentclass[a4paper,10pt]{classPres}
+
+\author{}
+\title{}
+\date{}
+
+\begin{document}
+\begin{frame}{Calcul mental}
+    \begin{center}
+        \huge 30 secondes par calcul
+    \end{center}
+\end{frame}
+
+\begin{frame}{Calcul 1}
+    \huge
+    \begin{eqnarray*}
+        6 + ... \times 5 = 21
+    \end{eqnarray*}
+\end{frame}
+
+\begin{frame}{Calcul 2}
+    \huge
+    Calculer avec la formule quand $a = 10$
+    \[ F = a^2 - 1 \]
+\end{frame}
+
+\begin{frame}{Calcul 3}
+    \huge
+    Réduire l'expression
+    \[ 
+        F = 10\times 5x - 6\times2 + 10x
+    \]
+\end{frame}
+
+\begin{frame}{Calcul 4}
+    \huge
+    Calculer l'aire de la figure
+    \begin{center}
+        \begin{tikzpicture}
+            \filldraw[very thick, fill=blue!60] 
+                (-2,3) -- node[midway, sloped, below]{7cm}
+                (-2,0) -- node[midway, below]{4cm}
+                (3,0)  -- cycle;
+
+        \end{tikzpicture}
+    \end{center}
+\end{frame}
+
+\begin{frame}{Fin}
+    \begin{center}
+        \huge On retourne son papier.
+    \end{center}
+\end{frame}
+
+
+\end{document}
diff --git a/6e/Calcul_Mental/P4/CM_18_03_19-03.pdf b/6e/Calcul_Mental/P4/CM_18_03_19-03.pdf
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diff --git a/6e/Calcul_Mental/P4/CM_18_03_19-03.tex b/6e/Calcul_Mental/P4/CM_18_03_19-03.tex
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+\documentclass[a4paper,10pt]{classPres}
+
+\usetikzlibrary{snakes}
+
+\author{}
+\title{}
+\date{}
+
+\begin{document}
+\begin{frame}{Calcul mental}
+    \begin{center}
+        \huge 30 secondes par calcul
+    \end{center}
+\end{frame}
+
+\begin{frame}{Calcul 1}
+    \huge
+    \begin{eqnarray*}
+        5 \times 56 = 
+    \end{eqnarray*}
+\end{frame}
+
+\begin{frame}{Calcul 2}
+    \huge
+    \[ 94 : 5 = \]
+\end{frame}
+
+\begin{frame}{Calcul 3}
+    \LARGE
+    5 sacs de beredjes coûtent 15\euro.
+
+    Combien coûte un sac?
+    
+\end{frame}
+
+\begin{frame}{Calcul 4}
+    \huge
+    Calculer l'aire de la figure
+    \begin{center}
+        \begin{tikzpicture}
+            \filldraw[very thick, fill=blue!60] 
+                    (-2,3) -- node[midway, sloped, below]{5cm}
+                    (-2,0) -- node[midway, below]{2cm}
+                    (0,0) -- 
+                    (0,1) -- node[midway, below]{4cm}
+                    (3,1) -- node[midway, rotate=-90, above]{3cm}
+                    (3,3) -- 
+                    cycle;
+                    \draw[dotted, very thick] (0,1) -- (0, 3);
+
+        \end{tikzpicture}
+    \end{center}
+\end{frame}
+
+\begin{frame}{Fin}
+    \begin{center}
+        \huge On retourne son papier.
+    \end{center}
+\end{frame}
+
+
+\end{document}