\newcommand\petitscarreaux[2]{%
\begin{tikzpicture}[inner sep=0,outer sep=0]
\pgfmathsetmacro\mywidth{#1}
\pgfmathsetmacro\myheight{#2}

\pgfmathsetmacro\incx{5mm}
\pgfmathsetmacro\incy{5mm}

\pgfmathsetmacro\numx{int(\mywidth/\incx)}
\foreach \x in {0,...,\numx}{
\draw[lignesfines]
(\x * \incx pt,0) -- (\x * \incx pt,-\myheight pt);
}

\pgfmathsetmacro\numy{int(\myheight/\incy)}
\foreach \y in {0,...,\numy}{
\draw[lignesfines]
(0,-\y * \incy pt) -- (\mywidth pt,-\y * \incy pt);
}
\end{tikzpicture}%
}




\newcommand\grandscarreaux[2]{%
\begin{tikzpicture}[inner sep=0,outer sep=0]
\pgfmathsetmacro\mywidth{#1}
\pgfmathsetmacro\myheight{#2}

\pgfmathsetmacro\incx{8mm}
\pgfmathsetmacro\incypetits{2mm}
\pgfmathsetmacro\incygrands{8mm}

\pgfmathsetmacro\numx{int(\mywidth/\incx)}
\foreach \x in {0,...,\numx}{
\draw[lignesfines]
(\x * \incx pt,0) -- (\x * \incx pt,-\myheight pt);
}

\pgfmathsetmacro\numy{int(\myheight/\incypetits)}
\foreach \y in {0,...,\numy}{
\draw[lignesfines]
(0,-\y * \incypetits pt) -- (\mywidth pt,-\y * \incypetits pt);
}

\pgfmathsetmacro\numy{int(\myheight/\incygrands)}
\foreach \y in {0,...,\numy}{
\draw[lignesepaisses]
(0,-\y * \incygrands pt) -- (\mywidth pt,-\y * \incygrands pt);
}
\end{tikzpicture}%
}



\newcommand{\questionlibre}[2]{\addtocounter{numeroquestion}{1}
%param 1: bareme
%param 2: question
\begin{questionmult}{\thenumeroquestion}
%
\def\AMCotextReserved{Cases réservées}
 \AMCOpen{lineup=true,lines=1,dots=false,annotate=true,width=0.975\linewidth,framerule=0.5pt}{
#1
}



\newcommand{\questionlibregc}[2]{
%param 1: bareme
%param 2: hauteur
\questionlibre{#1}{\vspace{-5pt}\noindent\grandscarreaux{\linewidth}{#2}}
}



\newcommand{\questionlibrepc}[2]{
%param 1: bareme
%param 2: hauteur
\questionlibre{#1}{\vspace{-5pt}\noindent\petitscarreaux{\linewidth}{#2}}
}