What is this?
\mdots{3}
\begin{boxdef}
    Pronumeral $ \coloneqq $ \dotfill
\end{boxdef}
\begin{boxdef}
    Numerical Value $ \coloneqq $ \dotfill
\end{boxdef}

What do we need to be careful of?
\mdots{3}

\begin{examplebox}
    \subsection{Examples}
    \begin{enumerate}[(a)]
        \item Evaluate $ 2x $ when $ x = 3 $
            \mdots{2}
        \item Evaluate $ 5a + 2b $ when $ a = 2 $ and $ b = -3 $
            \mdots{2}
        \item Evaluate $ 2p(3p-2) $ when $ p = 1 $ and $ q = -2 $
            \mdots{2}
        \item Evaluate $ 7m - 4n $ when $ m = -3 $ and $ n = -2 $
            \mdots{2}
        \item Evaluate $ a + 2b - 3c $ when $ a = 3, b = -5, c = -2 $
            \mdots{2}
    \end{enumerate}
\end{examplebox}

\newpage
\begin{exercisebox}
    \subsection{Exercises}
    \begin{enumerate}
        \item Evaluate \(2x-3y\) when:
                \begin{enumerate}[(a)]
                \begin{multicols}{2}
                    \item \(x = \frac{2}{5}, y = -\frac{1}{4}\)
                        \mdots{5}
                    \item \(x = \frac{1}{3}, y = \frac{1}{6}\)
                        \mdots{5}
                \end{multicols}
                \end{enumerate}
        \item Evaluate \(p^2 -2q\) when:
            \begin{enumerate}[(a)]
                \begin{multicols}{2}
                \item \(p=-7, q = 2\)
                        \mdots{5}
                \item \(p = -\frac{1}{3}, q = \frac{5}{6}\)
                        \mdots{5}
                \end{multicols}
            \end{enumerate}
    \end{enumerate}
\end{exercisebox}