\subsection{Addition}
\begin{questions}
    \Question The populations of five ant farms were determined at the end of each of three months.
        \begin{center}
        \begin{tabular}{|l|c|c|c|c|c|}
        \hline
         & Ant farm A & Ant farm B & Ant farm C & Ant farm D & Ant farm E \\
        \hline
        March & 97 & 597 & 143 & 89 & 13 \\
        \hline
        April & 113 & 603 & 89 & 432 & 28 \\
        \hline
        May & 214 & 411 & 17 & 729 & 164 \\
        \hline
        \end{tabular}
        \end{center}
        \begin{parts}
            \Part[1] List the ant farms in order of increasing size of their populations at the end of March.
            \begin{solutionordottedlines}[1in]
            \end{solutionordottedlines}
            \Part[1] What was the population of Ant farm A at the end of May?
            \begin{solutionordottedlines}[1in]
            \end{solutionordottedlines}
            \Part[1] Which of the ant farms had a population greater than 100 at the end of April?
            \begin{solutionordottedlines}[1in]
            \end{solutionordottedlines}
            \Part[1] What was the total population of all five ant farms at the end of May?
            \begin{solutionordottedlines}[1in]
            \end{solutionordottedlines}
        \end{parts}
        \Question[2] Complete the following to make the addition correct.
        \smallskip
        \begin{tabular}{ccccc}
            &&\square&6&3\\
            &&7&\square&2\\
            +&&5&8&\square\\
            \hline\\[-0.4cm]
            &\square&0&4&2\\
            \hline
        \end{tabular}
\end{questions}

\subsection{Subtraction}
\begin{questions}
    \Question[3] Fill in the missing value for the star:
    \begin{multicols}{3}
        \begin{parts}
            \part
                \begin{tabular}{ccccc}
                    &1&$\star$&5&$\star$\\
                    $-$& &4&$\star$&9\\
                    \hline\\
                     & &7&3&4\\
                     \hline
                \end{tabular}
            \part
                \begin{tabular}{ccccc}
                    &$\star$&7&6&$\star$\\
                    $-$& &$\star$&4&3\\
                    \hline\\
                     &1&9&1&8\\
                     \hline
                \end{tabular}
            \part 
                \begin{tabular}{ccccc}
                    &5&3&7&$\star$\\
                    $-$&2&1&4&8\\
                    \hline\\
                     &3&2&$\star$&8\\
                     \hline
                \end{tabular}
        \end{parts}
    \end{multicols}
    \Question[2] Bill has \(\$ 456\) more than Anna. Bill has \(\$ 3789\). How much does Anna have?
            \begin{solutionordottedlines}[1in]
            \end{solutionordottedlines}
    \Question[2] During the last school holidays, Stephen drove from Brisbane to Cairns along the Bruce Highway. He set his trip meter to zero when he left home. It showed \(1236 \mathrm{~km}\) at Townsville and \(1586 \mathrm{~km}\) on his arrival in Cairns. How far did he drive between Townsville and Cairns?
            \begin{solutionordottedlines}[1in]
            \end{solutionordottedlines}
    \Question[2] Melissa had invited 1534 people to attend a fundraising event, and 204 people indicated they would not be able to attend. How many people did Melissa expect to come to the event?
            \begin{solutionordottedlines}[1in]
            \end{solutionordottedlines}
    \Question[2] Australia scored 246 and England scored 196 in a one-day cricket match. What was the winning margin? That is, how many more runs did Australia score than England?
            \begin{solutionordottedlines}[1in]
            \end{solutionordottedlines}
    \Question[2] A town with a population of 34827 has 18439 adults. How many children are there?
            \begin{solutionordottedlines}[1in]
            \end{solutionordottedlines}
    \Question[2] 1265376 tickets were sold for a concert. The venue had seating for 75000 people. How many more tickets could be sold to fill every seat?
            \begin{solutionordottedlines}[1in]
            \end{solutionordottedlines}
\end{questions}

\subsection{Challenge}
\begin{questions}
    \Question[2] Place the numbers \(1,2,3,4,5\) and 6 in the circles of the following figure so that no two adjacent numbers are connected by a line.
        \begin{center}
        \begin{tikzpicture}
            \node (a) at (2,2) [vertex] {};
            \node (b) at (3,2) [vertex] {};
            \node (c) at (4,1) [vertex] {};
            \node (d) at (3,0) [vertex] {};
            \node (e) at (2,0) [vertex] {};
            \node (f) at (1,1) [vertex] {};
            \draw (a) -- (b) -- (c) -- (d) -- (e) -- (f) -- cycle;
            \draw (a) -- (e) -- (b) -- (d);
            \draw (f) -- (a);
        \end{tikzpicture}
        \end{center}
    \Question[2] Find a two-digit number that is twice the product of its digits.
            \begin{solutionordottedlines}[1in]
            \end{solutionordottedlines}
\end{questions}