2

I use xlop \usepackage to prepare for my son. Now I don't want to show the resuls of this calculations. How can I do it?

\documentclass[12pt]{article}
\usepackage{color,xlop}
\usepackage{multicol}
\begin{document}
Calculate the problems
 \begin{multicols}{4}
  \opadd[carryadd=false]{28}{11}\\
  \opadd[carryadd=false]{12}{34}\\
  \opadd[carryadd=false]{13}{42}\\
  \opadd[carryadd=false]{25}{20}\\
  \end{multicols}
\end{document}
minhthien_2016
  • 9,467

1 Answers1

3
\newcommand{\white}[1]{}


  \opadd[carryadd=false,resultstyle=\white]{28}{11}\\
Pieter van Oostrum
  • 16,203