Report copyright - Calcul mental : fiche 22 - Methodolodys2016/09/22 · Calcul mental : fiche 22 © GRe10 / MJ 2014 Effectue ces opérations : 2 – 1= 3 – 2= 4 – 1= 6 – 2= 6 – 3= 5 – 1=
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