\documentclass[a4paper,12pt,landscape, twocolumn]{article}
\usepackage{myXsim}

\author{}
\date{Septembre 2017}
\title{Bien rédiger et choisir la bonne opération}
\tribe{Sixième}

\DeclareExerciseCollection{problemes-easy}
\DeclareExerciseTagging{difficulty}
\DeclareExerciseTagging{operation}

\begin{document}

\collectexercises{problemes-easy}
\xsimsetup{difficulty=easy}
\input{problemes_collection.tex}
\collectexercisesstop{problemes-easy}

\printcollection{problemes-easy}


\end{document}

%%% Local Variables: 
%%% mode: latex
%%% TeX-master: "master"
%%% End:

