# Line break in a table cell for a math equation?

In the middle of typing up an assessment and trying to work out how to get equations to work inside a table environment

\documentclass [11pt] {article}
\usepackage{amsmath}
\usepackage{pdflscape}
\usepackage{float}
\restylefloat{table}
\begin{document}

\title{CSC3407 assessment one }
\author{My name My student number}
\date{09/03/2013}
\maketitle
\tableofcontents
\newpage

\begin{landscape}

\section{Question 3}
Fill the answers in the blanks in the two tables below. You need to provide the working process for each answer.
\subsection{A}
\begin{table}[H]
\begin{tabular}{|l|l|l|}
\hline
Classful Network & Required borrowed subnet bits & The mask that supports the required subnets \\ \hline
100.0.0.0 & 12 & 8 bits for class A + 12 bits for subnet = $11111111.11111111.11110000.00000000 =1x2^7+1x2^6+1x2^5+1x2^4+1x2^3+1x2^2+1x2^1+1x2^0= 255$   \\

\hline
\end{tabular}
\end{table}
\end{landscape}

\end{document}

The equation I need to split is 100.0.0.0 & 12 & 8 bits for class A + 12 bits for subnet = $11111111.11111111.11110000.00000000 =1x2^7+1x2^6+1x2^5+1x2^4+1x2^3+1x2^2+1x2^1+1x2^0= 255$ \

If I could get the 1x2^7 ... to sit below the binary rep that would make it really good.

Example

11111111.11111111.11110000.00000000
=1x2^7+1x2^6+1x2^5+1x2^4+1x2^3+1x2^2+1x2^1+1x2^0= 255$- I thought you may need my whole code, Sadly I can no longer edit the post. – Ausghostdog Mar 14 '13 at 8:15 Thanks, I solved the issue as well \begin{table}[H] \begin{tabular}{|l|l|l|} \hline Classful Network & Required borrowed subnet bits & The mask that supports the required subnets \\ \hline 100.0.0.0 & 12 & 8 bits for class A + 12 bits for subnet =$ 11111111.11111111.11110000.00000000$\\ & &$=1x2^7+1x2^6+1x2^5+1x2^4+1x2^3+1x2^2+1x2^1+1x2^0= 255\\ \hline \end{tabular} \end{table} – Ausghostdog Mar 14 '13 at 8:22 ## 1 Answer You can benefit from the aligned environment of amsmath: \documentclass{article} \usepackage{amsmath} \usepackage{pdflscape} \begin{document} \begin{landscape} \section{Question 3} Fill the answers in the blanks in the two tables below. You need to provide the working process for each answer. \subsection{A} The network mask that supports:\\[\medskipamount] \begin{tabular}{|l|l|l|} \hline Classful Network & Required borrowed & The mask that supports \\ & subnet bits & the required subnets \\ \hline 100.0.0.0 & 12 & 8 bits for class A{}+{}$12 bits for subnet%$\!\begin{aligned}[t]
&=\mathtt{11111111.11111111.11110000.00000000} \\
&=1x2^7+1x2^6+1x2^5+1x2^4+1x2^3\\