\documentclass[a4paper,10pt]{article}

\usepackage[utf8x]{inputenc}    
\usepackage[T1]{fontenc}

\usepackage[box,insidebox]{automultiplechoice}
\usepackage{multicol}
\begin{document}

\AMCnumericOpts{ignoreblank=true}

\onecopy{10}{    

\noindent{\bf AMC  \hfill TEST}

\vspace*{.5cm}
\begin{minipage}{.4\linewidth}
\centering\large\bf Test\\ ignoreblank\end{minipage}
\namefield{\fbox{    
                \begin{minipage}{.5\linewidth}
                  Name:

                  \vspace*{.5cm}\namefielddots   
                  \vspace*{1mm}
                \end{minipage}
         }}

\vspace{1ex}

\begin{multicols}{2}
  
  \begin{questionmultx}{integer}
    Code 12
    \AMCnumericChoices{12}{digits=3,sign=false}
  \end{questionmultx}

  \begin{questionmultx}{sign}
    Code significant digits for 0.01022
    \AMCnumericChoices{0.01022}{significant=true,digits=2}
  \end{questionmultx}

  \begin{questionmultx}{decimal}
    Code 12.34
    \AMCnumericChoices{12.34}{digits=8,decimals=4,sign=false}
  \end{questionmultx}

\end{multicols}

  \begin{questionmultx}{e1}
    Code -0.00123
    \AMCnumericChoices{-0.00123}{digits=5,decimals=4,sign=true,exponent=2,keepas=ANumber}
  \end{questionmultx}

  \begin{questionmultx}{e2}
    And the square root of the absolute value of the precedent number
    \AMCnumericChoices{sqrt(0.00123)}{digits=3,decimals=2,sign=false,exponent=2,alsocorrect=sqrt(abs(ANumber)),exact=1}
  \end{questionmultx}

}   

\end{document}
