\documentclass[a4paper,12pt]{article} \usepackage{fancybox} \usepackage{fancyhdr} \usepackage{color} \usepackage{geometry} \usepackage{lastpage} \usepackage[latin1]{inputenc} \usepackage[LGR,T1]{fontenc} \usepackage[frenchb]{babel} \usepackage{graphicx} \usepackage{amsmath,tabularx} \usepackage{textcomp} \usepackage{multicol} \usepackage{enumerate} \usepackage{ifthen} \usepackage{marvosym} %---------------------------------------------------------------------------------- % Correction vue ou cachée %---------------------------------------------------------------------------------- \newboolean{visible} \setboolean{visible}{true} \newcommand{\blanc}[1]{% \textcolor{red}{\ifthenelse{\boolean{visible}}{#1}{\phantom{#1}}}% } \newcommand{\fraction}[2]{ {\Large $\frac{#1}{#2}$} } %----------------------------------------------------------------------------------- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %macro pour exercice numéro ... %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% \newcounter{numeroexo} \newcommand{\exo}{\par\noindent\stepcounter{numeroexo} \hspace{-.25cm}\Ovalbox{\textbf{Exercice \arabic{numeroexo}}}\quad} %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %macro pour le nombre de points et le titre de l'exercice %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% \newcommand{\pts}[2]{\noindent \textcolor{red}{\textsl{(sur #1 points)}}\quad %#1 pour le nombre de points \textcolor{blue}{\textsc{#2 }\\*[.3cm]}} %#2 pour le titre de l'exo %------------------------------------------------ %redefinition des listes numérotées (copie de chris5.tex) %------------------------------------------------ \def\labelenumi{{\bf \theenumi ¡)}} %%%%%%%%%%%%%%%%% %entete du devoir %%%%%%%%%%%%%%%%% %\thispagestyle{empty} \textwidth19cm \textheight20cm \geometry{margin=1.9cm} \pagestyle{fancy} \fancyhead{} \lhead{\bf Nom : \hspace*{5cm} Prénom :} \rhead{\bf 6$^{\textrm{e}}$\hspace*{1pc}} %entête classe de sixième \fancyfoot{} %\DeclareGraphicsRule{*}{mps}{*}{} %+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ % le document commence réellement ici %+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ \begin{document} %------------------------------------------------- \setboolean{visible}{false} %Cacher la correction en décommentant la ligne %------------------------------------------------- \vspace*{-1cm} \centerline{\shadowbox{\Large{Devoir en classe}} } %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %exercice %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% \exo\pts{3}{Représentation graphique} \par \vspace*{-.5cm} Ecrire la fraction qui représente la partie coloriée de chaque figure ci-dessous :\\ \includegraphics[height=2cm]{devfraction6.1} \quad \includegraphics[height=2cm]{devfraction6.2} \quad \includegraphics[height=2cm]{devfraction6.3} \quad \includegraphics[height=2cm]{devfraction6.4} \quad \includegraphics[height=2cm]{devfraction6.5} \quad \includegraphics[height=2cm]{devfraction6.6} \\ \hspace*{.5cm} \blanc{\fraction{1}{4}} \hspace{1.7cm} \blanc{\fraction{6}{32}} \hspace{1.7cm} \blanc{\fraction{2}{8}} \hspace{1.6cm} \blanc{\fraction{2}{4}} \hspace{1.7cm} \blanc{\fraction{4}{9}} \hspace{2.6cm} \blanc{\fraction{6}{18}} \vspace{.3cm} %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %exercice suivant %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% \exo\pts{3}{Ecriture fractionnaire, écriture décimale} \vspace*{-.6cm} \begin{enumerate} \item Donner une fraction égale à : 2,3 = \blanc{\fraction{23}{10}} \qquad 0,75 = \blanc{\fraction{3}{4}} \qquad 0,3\underline{3} = \blanc{\fraction{1}{3}} . \item Donner l'écriture décimale de \fraction{120}{25} = \blanc{4,8} \qquad \fraction{12}{7} = \blanc{1,\underline{714285}} \qquad \fraction{45}{2} = \blanc{22,5}. \end{enumerate} %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%exercice suivant %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% \exo\pts{5}{Fractions égales} \vspace*{-1cm} \begin{enumerate}[{\bf a)}] \item Parmi les fractions suivantes, quelles sont les fractions égales ? \fraction{4}{5}, \fraction{44}{55}, \fraction{16}{25}, \fraction{8}{10}, \fraction{5}{4}, \fraction{42}{32}, \fraction{125}{100}, \fraction{40}{50}. \\ \blanc{\fraction{4}{5}= \fraction{44}{55}= \fraction{8}{10}= \fraction{40}{50} \quad et \quad \fraction{5}{4}= \fraction{125}{100}} \item Simplifier les fractions : \fraction{18}{36}, \fraction{42}{63} et \fraction{35}{100}.\\[.1cm] \blanc{\fraction{18}{36}=\fraction{9}{18}=\fraction{3}{6}=\fraction{1}{2}}. \qquad \blanc{\fraction{42}{63}=\fraction{6}{9}=\fraction{2}{3}}.\qquad \blanc{\fraction{35}{100}=\fraction{7}{20}}. \end{enumerate} %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%exercice suivant %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% \exo\pts{4}{Calculer :}\par \vspace*{-1cm} \begin{multicols}{2} \begin{enumerate}[{\bf i)}] \item 12 $\times$ \fraction{5}{24} = \blanc{\fraction{12\times5}{24}= \fraction{5}{2} = 2,5} \item 15 $\times$ \fraction{5}{25} = \blanc{\fraction{15\times5}{25}= \fraction{15}{5} = 3} \item \fraction{5}{4}$\times$12 = \blanc{\fraction{12\times5}{4}= 3$\times$5 = 15} \item 56 $\times$ \fraction{8}{7} = \blanc{\fraction{56\times8}{7}= 8$\times$8 = 64} \end{enumerate} \end{multicols} %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %exercice suivant %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %\vspace*{1cm} \exo\pts{5}{Problèmes}\par \vspace*{-1cm} \begin{enumerate}[{\bf 1)}] \item Dans sa tirelire Amélie a 45 \EUR. Elle dépense les sept neuvième de son argent. Combien lui reste-t-il ? \\ \blanc{Argent dépensé = 45 $\times$ \fraction{7}{9} =\fraction{7\times45}{9}= 7$\times$5 = 35 \EUR. Il lui reste 45$-$35=10 \EUR} \item Un réservoir d'essence de 36 litres est rempli au cinq huitièmes. Quelle quantité d'essence contient-il ? \\ \blanc{Quantité d'essence restante = 36 $\times$ \fraction{5}{8} =\fraction{36\times5}{8}= \fraction{180}{8} =22,5 litres} \end{enumerate} \end{document}