How to insert a box in equations to indicate spaces for writing answers in an exam paper?

Question

Currently, I use write things like

\[
3 + 4 = \underline{\hspace{2cm}}
\]

in the exam paper I am preparing. The \underline indicates where students should write their answer.

However, I want to change the underlines into empty boxes where students can fill in answers, such as a number. This allows me to control how large font they write.

Please elaborate about what output you exactly need. And not related but you should not use $$ ... $$ in LaTeX, but \[ ... \] instead or just $ ... $ if it's inline math. See this very extensive post about that. — SebGlav, Mar 11 '22 at 09:45

score 1 · Accepted Answer · answered Mar 11 '22 at 10:22

See this code:

\documentclass[10pt,a4paper]{book}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{amsmath}
\parindent=0mm
\begin{document}
    \begin{enumerate}
        \item   3+4=\ \hfill \framebox(\textwidth,10){}\
        \item 7x5=\ \hfill \framebox(\textwidth,10){}\
        \item $\dfrac{x^2-1}{x-1}=$\ \hfill \framebox(\textwidth,20){}\
        \item $ \int x^2,dx=$\ \hfill \framebox(\textwidth,30){}\
        \item Make the construction of an equilater triangle with a ruler and a compass.\ \hfill \framebox(\textwidth,150){}\
    \end{enumerate}
\end{document}

and his output:

How to insert a box in equations to indicate spaces for writing answers in an exam paper?

1 Answers1