ellipsed-text

\documentclass[]{standalone}

\usepackage[]{graphicx}

\usepackage{lipsum}
\usepackage{tikz}
\usepackage{pgfplots}
\pgfplotsset{compat=newest}

\newcommand{\numell}[1]{\tikz[baseline=-0.4em, x=1em, y=1em]\draw[thick] (0,0) ellipse (0.35em and 0.6em) node[] {\footnotesize{#1}};}

\begin{document}
Math OMR sheet, which is prented the symbles \numell{$\ast$},\numell{$-$},\numell{$\pm$} and number $0\sim 9$, ...
\end{document}