1

I'm making a compound fraction for a review worksheet. I currently have this:

\begin{multicols}{2}
\begin{enumerate}

\item
Simplify
\[
\dfrac{\frac{3}{5} + \frac{5}{5x}}{1 - \frac{1}{10x}}
\]

The problem is that the fractions 3/5 are extremely tiny. If I replace \dfrac with \frac, I see that they are exactly the same. I want the main fraction to be large, and the smaller fractions to be normal. Am I missing a package? Is there a better way to get what I need?

Thanks in advance

  • 1
    In display math environment in such simple case both should have the same size. Try difference in \frac{1}{\frac{1}{2}} and \frac{1}{\dfrac{1}{2}}. – Zarko Oct 19 '15 at 18:29
  • 3
    The outer \dfrac is not doing anything as it is already in display mode, you could use \dfrac for the inner ones, or you could put \Large before the \[ – David Carlisle Oct 19 '15 at 18:37
9

Make your choice! nccmath defines a \mfrac command (medium-sized fractions, about 80 % of displaystyle):

\documentclass{article}
\usepackage{multicol}
 \usepackage{nccmath}

\begin{document}

\begin{multicols}{2}
  \begin{enumerate}
    \item
          Simplify
          \[
            \frac{\frac{3}{5} + \frac{5}{5x}}{1 - \frac{1}{10x}} = \frac{\mfrac{3}{5} + \mfrac{5}{5x}}{1 - \mfrac{1}{10x}} = \frac{\dfrac{3}{5} + \dfrac{5}{5x}}{1 - \dfrac{1}{10x}}
          \]
  \end{enumerate}
\end{multicols}

\end{document} 

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