General ⇒ How can I separate exercises from solutions?

[LaTexLearner]

I'm in the midst of creating introductory multiplication and division exercises, exemplified by the following, except that I would like to separate the exercises from the solutions.

PicForOnlinePost.PNG (55.6 KiB) Viewed 11607 times

I can almost do it now... but not quite.

I made the code below which compiles, but does not separate the exercises from the solutions. I commented out the way I thought I could separate solutions and exercises, but that did not work unless I remove \Diagram from the definition of \Solution, meaning that there is some tikZ problem with \xdef... I think.

All the pictures and files are in this Dropbox folder. https://www.dropbox.com/sh/04uujszim2jr ... 2tTBa?dl=0

[Side note: I do not know how to turn normal text into a link, so I pasted that huge URL instead...]

Sorry for the long MWE; I'm not sure what I could remove and still get the point across! If anyone needs me to comment on any of the code, I'm happy to.

Code: Select all

Code, edit and compile here:

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\documentclass{article}
\usepackage[margin = 1.5cm, landscape]{geometry}
\usepackage{graphicx}
\usepackage{pgf}
 \pgfmathsetseed{\number\pdfrandomseed}
\usepackage{pgffor}
\usepackage{tikz}
\setlength{\parindent}{0cm}
\newcommand{\InitVariables}
{ \pgfmathrandominteger{\Sets}{1}{10}
  \pgfmathrandominteger{\PerSet}{1}{10}
  \pgfmathsetmacro{\Total}{int(\Sets*\PerSet)}
  }
\newcommand{\picturescale}{0.4}
\newcommand{\Diagram}{}
\newcommand{\ChosenPic}{}
\newcommand{\Exercise}{}
\newcommand{\Solution}{}
\newcommand{\GenOneExerciseAndSolution}
{\InitVariables
  
 \renewcommand{\Diagram}
  {\ifcase\PerSet\relax
    \or \renewcommand{\ChosenPic}{SetOfOne} 
    \or \renewcommand{\ChosenPic}{SetOfTwo} 
    \or \renewcommand{\ChosenPic}{SetOfThree} 
    \or \renewcommand{\ChosenPic}{SetOfFour} 
    \or \renewcommand{\ChosenPic}{SetOfFive} 
    \or \renewcommand{\ChosenPic}{SetOfSix}
    \or \renewcommand{\ChosenPic}{SetOfSeven} 
    \or \renewcommand{\ChosenPic}{SetOfEight} 
    \or \renewcommand{\ChosenPic}{SetOfNine}
    \or \renewcommand{\ChosenPic}{SetOfTen} 
    \fi
 
 
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