\documentclass[a4paper,10pt]{classPres}
\usepackage{tkz-fct}

\author{}
\title{}
\date{}

\begin{document}
\begin{frame}{Questions flashs}
    \begin{center}
        \huge 30 secondes par calcul
    \end{center}
\end{frame}

\begin{frame}{Calcul 1}
    \huge 
    Position de $A$

    \begin{center}
    \begin{tikzpicture}[scale=0.8]
        \filldraw[very thick, ->] (-4.4,0) -- (4.4,0);
        \filldraw[very thick, ->] (0,-4.4) -- (0,4.4);
        \draw[step=1] (-4,-4) grid (4,4);

        \draw (0, 3) node {x} node[above right] {$A$};

        \foreach \x in {-4,...,4} {%
            \draw (\x, 0) node[below] {\small \x};
            \draw (0, \x) node[left ] {\small \x};
        }
    \end{tikzpicture}
        
    \end{center}
\end{frame}

\begin{frame}{Calcul 2}
    \huge 
    A-t-on égalité?
    \[
        3x + 5 \quad ??? \quad 2x + 5 + x
    \]
\end{frame}

\begin{frame}{Calcul 3}
    \huge
    \[
        -6 + 3 = 
    \]
\end{frame}

\begin{frame}{Calcul 4}
    \huge
    \[
        \frac{1}{3} + \frac{1}{3} = 
    \]
\end{frame}

\begin{frame}{Fin}
    \begin{center}
        \huge On retourne son papier.
    \end{center}
\end{frame}


\end{document}