diff --git a/3e/Questions_Flash/P5/CM_18_05_21-1.pdf b/3e/Questions_Flash/P5/CM_18_05_21-1.pdf
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diff --git a/3e/Questions_Flash/P5/CM_18_05_21-1.tex b/3e/Questions_Flash/P5/CM_18_05_21-1.tex
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--- /dev/null
+++ b/3e/Questions_Flash/P5/CM_18_05_21-1.tex
@@ -0,0 +1,64 @@
+\documentclass[a4paper,10pt]{classPres}
+\usepackage{tkz-fct}
+
+\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
+    Développer puis réduire.
+    \[
+        2x(3x - 10) = 
+    \]
+\end{frame}
+
+\begin{frame}{Calcul 2}
+    \huge
+    Calculer l'aire de la figure
+    \begin{center}
+        \begin{tikzpicture}[scale=2, very thick]
+            \draw (0, 0) -- (1, 0) node [midway, above] {3cm};
+            \draw (0, 0) circle (1);
+        \end{tikzpicture}
+    \end{center}
+\end{frame}
+
+\begin{frame}{Calcul 3}
+    \huge
+    A quel type de fonction ce graphique correspond-il?
+    
+    \normalsize
+        \begin{tikzpicture}[scale=1, very thick]
+            \tkzInit[xmin=-5,xmax=5,ymin=-2,ymax=2]
+            \tkzGrid
+            \tkzAxeXY
+            \tkzFct[color=red]{0.2*x+1}
+        \end{tikzpicture}
+\end{frame}
+
+\begin{frame}{Calcul 4}
+    \huge
+    \begin{itemize}
+        \item  Une robe coûte 80\euro.
+        \item Son prix augmente de 50\%.
+    \end{itemize}
+
+    Quel est son nouveau prix?
+\end{frame}
+
+\begin{frame}{Fin}
+    \begin{center}
+        \huge On retourne son papier.
+    \end{center}
+\end{frame}
+
+
+\end{document}
diff --git a/3e/Questions_Flash/P5/CM_18_05_21-2.pdf b/3e/Questions_Flash/P5/CM_18_05_21-2.pdf
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diff --git a/3e/Questions_Flash/P5/CM_18_05_21-2.tex b/3e/Questions_Flash/P5/CM_18_05_21-2.tex
new file mode 100755
index 0000000..c45de8d
--- /dev/null
+++ b/3e/Questions_Flash/P5/CM_18_05_21-2.tex
@@ -0,0 +1,64 @@
+\documentclass[a4paper,10pt]{classPres}
+\usepackage{tkz-fct}
+
+\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
+    Développer puis réduire.
+    \[
+        -x(5x + 10) = 
+    \]
+\end{frame}
+
+\begin{frame}{Calcul 2}
+    \huge
+    Calculer le périmètre de la figure
+    \begin{center}
+        \begin{tikzpicture}[scale=2, very thick]
+            \draw (0, 0) -- (1, 0) node [midway, above] {5cm};
+            \draw (0, 0) circle (1);
+        \end{tikzpicture}
+    \end{center}
+\end{frame}
+
+\begin{frame}{Calcul 3}
+    \huge
+    A quel type de fonction ce graphique correspond-il?
+    
+    \normalsize
+        \begin{tikzpicture}[scale=1, very thick]
+            \tkzInit[xmin=-5,xmax=5,ymin=-2,ymax=2]
+            \tkzGrid
+            \tkzAxeXY
+            \tkzFct[color=red]{-0.3*x}
+        \end{tikzpicture}
+\end{frame}
+
+\begin{frame}{Calcul 4}
+    \huge
+    \begin{itemize}
+        \item Une robe coûte 40\euro.
+        \item Son prix diminue de 25\%.
+    \end{itemize}
+
+    Quel est son nouveau prix?
+\end{frame}
+
+\begin{frame}{Fin}
+    \begin{center}
+        \huge On retourne son papier.
+    \end{center}
+\end{frame}
+
+
+\end{document}
diff --git a/3e/Questions_Flash/P5/CM_18_05_21-3.pdf b/3e/Questions_Flash/P5/CM_18_05_21-3.pdf
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index 0000000..fbece20
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diff --git a/3e/Questions_Flash/P5/CM_18_05_21-3.tex b/3e/Questions_Flash/P5/CM_18_05_21-3.tex
new file mode 100755
index 0000000..acbbcb3
--- /dev/null
+++ b/3e/Questions_Flash/P5/CM_18_05_21-3.tex
@@ -0,0 +1,64 @@
+\documentclass[a4paper,10pt]{classPres}
+\usepackage{tkz-fct}
+
+\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
+    Développer puis réduire.
+    \[
+        -2x(3x - 6) = 
+    \]
+\end{frame}
+
+\begin{frame}{Calcul 2}
+    \huge
+    Calculer l'aire de la figure
+    \begin{center}
+        \begin{tikzpicture}[scale=2, very thick]
+            \draw (0, 0) -- (1, 0) node [midway, above] {10cm};
+            \draw (0, 0) circle (1);
+        \end{tikzpicture}
+    \end{center}
+\end{frame}
+
+\begin{frame}{Calcul 3}
+    \huge
+    A quel type de fonction ce graphique correspond-il?
+    
+    \normalsize
+        \begin{tikzpicture}[scale=1, very thick]
+            \tkzInit[xmin=-5,xmax=5,ymin=-2,ymax=2]
+            \tkzGrid
+            \tkzAxeXY
+            \tkzFct[color=red]{-0.3*x+0.5}
+        \end{tikzpicture}
+\end{frame}
+
+\begin{frame}{Calcul 4}
+    \huge
+    \begin{itemize}
+        \item Une robe coûte 20\euro.
+        \item Son prix diminue de 10\%.
+    \end{itemize}
+
+    Quel est son nouveau prix?
+\end{frame}
+
+\begin{frame}{Fin}
+    \begin{center}
+        \huge On retourne son papier.
+    \end{center}
+\end{frame}
+
+
+\end{document}
diff --git a/3ePasserelles/Calcul_Mental/P5/CM_18_05_21-1.pdf b/3ePasserelles/Calcul_Mental/P5/CM_18_05_21-1.pdf
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diff --git a/3ePasserelles/Calcul_Mental/P5/CM_18_05_21-1.tex b/3ePasserelles/Calcul_Mental/P5/CM_18_05_21-1.tex
new file mode 100755
index 0000000..1a5873b
--- /dev/null
+++ b/3ePasserelles/Calcul_Mental/P5/CM_18_05_21-1.tex
@@ -0,0 +1,51 @@
+\documentclass[a4paper,10pt]{classPres}
+\usepackage{tkz-fct}
+
+\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
+    Réduire l'expression.
+    \[
+        10x + 4 - 7x + 2x = 
+    \]
+\end{frame}
+
+\begin{frame}{Calcul 2}
+    \LARGE
+    Nommer une figure qui a 4 côtés égaux mais qui n'est pas un carré.
+\end{frame}
+
+\begin{frame}{Calcul 3}
+    \LARGE
+    Calculer le volume.
+    
+    \begin{center}
+        \begin{tikzpicture}
+            \pic {annotated cuboid={width=2, height=3, depth=4, scale=1, units=m}};
+        \end{tikzpicture}
+    \end{center}
+\end{frame}
+
+\begin{frame}{Calcul 4}
+    \huge
+    Combien font $30\%$ de 12 \euro?
+\end{frame}
+
+\begin{frame}{Fin}
+    \begin{center}
+        \huge On retourne son papier.
+    \end{center}
+\end{frame}
+
+
+\end{document}
diff --git a/3ePasserelles/Calcul_Mental/P5/CM_18_05_21-2.pdf b/3ePasserelles/Calcul_Mental/P5/CM_18_05_21-2.pdf
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diff --git a/3ePasserelles/Calcul_Mental/P5/CM_18_05_21-2.tex b/3ePasserelles/Calcul_Mental/P5/CM_18_05_21-2.tex
new file mode 100755
index 0000000..f7670f3
--- /dev/null
+++ b/3ePasserelles/Calcul_Mental/P5/CM_18_05_21-2.tex
@@ -0,0 +1,51 @@
+\documentclass[a4paper,10pt]{classPres}
+\usepackage{tkz-fct}
+
+\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
+    Réduire l'expression.
+    \[
+        5x - 2 + 4x + 5 = 
+    \]
+\end{frame}
+
+\begin{frame}{Calcul 2}
+    \LARGE
+    Nommer une figure qui a 4 angles droits mais qui n'est pas un carré.
+\end{frame}
+
+\begin{frame}{Calcul 3}
+    \LARGE
+    Calculer le volume.
+    
+    \begin{center}
+        \begin{tikzpicture}
+            \pic {annotated cuboid={width=5, height=2, depth=4, scale=1, units=m}};
+        \end{tikzpicture}
+    \end{center}
+\end{frame}
+
+\begin{frame}{Calcul 4}
+    \huge
+    Combien font $50\%$ de 20 \euro?
+\end{frame}
+
+\begin{frame}{Fin}
+    \begin{center}
+        \huge On retourne son papier.
+    \end{center}
+\end{frame}
+
+
+\end{document}
diff --git a/6e/Calcul_Mental/P5/CM_18_05_21-1.pdf b/6e/Calcul_Mental/P5/CM_18_05_21-1.pdf
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diff --git a/6e/Calcul_Mental/P5/CM_18_05_21-1.tex b/6e/Calcul_Mental/P5/CM_18_05_21-1.tex
new file mode 100755
index 0000000..a8b5c01
--- /dev/null
+++ b/6e/Calcul_Mental/P5/CM_18_05_21-1.tex
@@ -0,0 +1,56 @@
+\documentclass[a4paper,10pt]{classPres}
+\usepackage{./horloge}
+
+\author{}
+\title{}
+\date{}
+
+\begin{document}
+\begin{frame}{Calcul mental}
+    \begin{center}
+        \huge 30 secondes par calcul
+    \end{center}
+\end{frame}
+
+\begin{frame}{Calcul 1}
+    \LARGE
+    L'heure 30min après
+    \vspace{2.5cm}
+    \begin{center}
+    \begin{tikzpicture}[cap=round, rotate=90, transform canvas={scale=0.4}]
+        \clockAtick{10}{15}
+    \end{tikzpicture}
+    \end{center}
+    \vspace{3cm}
+\end{frame}
+
+\begin{frame}{Calcul 2}
+    \huge
+    \[
+        7 \times \cdots = 49
+    \]
+\end{frame}
+
+\begin{frame}{Calcul 3}
+    \LARGE
+    Nommer une figure géométrique qui a 4 angles droits mais qui n'est pas un carré.
+\end{frame}
+
+\begin{frame}{Calcul 4}
+    \LARGE
+    Quel est le minimum?
+    \begin{center}
+        9,5 \hspace{2cm}
+        9,30 \hspace{2cm}
+        9,05 \hspace{2cm}
+    \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/P5/CM_18_05_21-2.pdf b/6e/Calcul_Mental/P5/CM_18_05_21-2.pdf
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diff --git a/6e/Calcul_Mental/P5/CM_18_05_21-2.tex b/6e/Calcul_Mental/P5/CM_18_05_21-2.tex
new file mode 100755
index 0000000..80f17de
--- /dev/null
+++ b/6e/Calcul_Mental/P5/CM_18_05_21-2.tex
@@ -0,0 +1,56 @@
+\documentclass[a4paper,10pt]{classPres}
+\usepackage{./horloge}
+
+\author{}
+\title{}
+\date{}
+
+\begin{document}
+\begin{frame}{Calcul mental}
+    \begin{center}
+        \huge 30 secondes par calcul
+    \end{center}
+\end{frame}
+
+\begin{frame}{Calcul 1}
+    \LARGE
+    L'heure 30min après
+    \vspace{2.5cm}
+    \begin{center}
+    \begin{tikzpicture}[cap=round, rotate=90, transform canvas={scale=0.4}]
+        \clockAtick{5}{25}
+    \end{tikzpicture}
+    \end{center}
+    \vspace{3cm}
+\end{frame}
+
+\begin{frame}{Calcul 2}
+    \huge
+    \[
+        7 \times \cdots = 56
+    \]
+\end{frame}
+
+\begin{frame}{Calcul 3}
+    \LARGE
+    Nommer une figure géométrique qui a 4 côtés égaux mais qui n'est pas un carré.
+\end{frame}
+
+\begin{frame}{Calcul 4}
+    \LARGE
+    Quel est le minimum?
+    \begin{center}
+        5,4 \hspace{2cm}
+        5,40 \hspace{2cm}
+        5,15 \hspace{2cm}
+    \end{center}
+\end{frame}
+
+\begin{frame}{Fin}
+    \begin{center}
+        \huge On retourne son papier.
+    \end{center}
+\end{frame}
+
+
+\end{document}
diff --git a/tools/style/shortcuts.sty b/tools/style/shortcuts.sty
index 4ab9532..93b58c3 100755
--- a/tools/style/shortcuts.sty
+++ b/tools/style/shortcuts.sty
@@ -262,3 +262,38 @@
     \draw (#5, #1) -- (#6, #1);
 }
 
+
+\usetikzlibrary{quotes,arrows.meta}
+
+\tikzset{
+    % drawing parallelepipoid
+    annotated cuboid/.pic={
+        \tikzset{%
+            every edge quotes/.append style={midway, auto},
+            /cuboid/.cd,
+            #1
+        }
+        \draw [every edge/.append style={pic actions, densely dashed, opacity=.5}, pic actions]
+        (0,0,0) coordinate (o) -- ++(-\cubescale*\cubex,0,0) coordinate (a) -- ++(0,-\cubescale*\cubey,0) coordinate (b) edge coordinate [pos=1] (g) ++(0,0,-\cubescale*\cubez)  -- ++(\cubescale*\cubex,0,0) coordinate (c) -- cycle
+        (o) -- ++(0,0,-\cubescale*\cubez) coordinate (d) -- ++(0,-\cubescale*\cubey,0) coordinate (e) edge (g) -- (c) -- cycle
+        (o) -- (a) -- ++(0,0,-\cubescale*\cubez) coordinate (f) edge (g) -- (d) -- cycle;
+        \path [every edge/.append style={pic actions, |-|}]
+        (b) +(0,-5pt) coordinate (b1) edge ["\cubex \cubeunits"'] (b1 -| c)
+        (b) +(-5pt,0) coordinate (b2) edge ["\cubey \cubeunits"] (b2 |- a)
+        (c) +(3.5pt,-3.5pt) coordinate (c2) edge ["\cubez \cubeunits"'] ([xshift=3.5pt,yshift=-3.5pt]e)
+        ;
+    },
+    /cuboid/.search also={/tikz},
+    /cuboid/.cd,
+    width/.store in=\cubex,
+    height/.store in=\cubey,
+    depth/.store in=\cubez,
+    units/.store in=\cubeunits,
+    scale/.store in=\cubescale,
+    width=10,
+    height=10,
+    depth=10,
+    units=cm,
+    scale=.1,
+}
+