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\chead{\textit{Terceiro TD - Divisão, potênciação e radiciação}}
\begin{document}
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[
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\begin{enumerate}
\item Calcule as divisões que se seguem:
\begin{enumerate}
\begin{multicols}{2}
\item 396/36
\item 324/27
\item 728/13
\item 3472/31
\item 13552/11
\item 4851/63
\item 25047/99
\item 3264/102
\end{multicols}
\end{enumerate}
\end{enumerate}
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