Can't enter calculation in table

I'm kind of new to LaTeX and I want to put these 3 calculations in a table. But I'm getting errors

\begin{tabular}{ l | c | r }
\begin{math}
\frac{9250}{7650} = 1,21 &
\frac{10126}{7986} = 1,27 &
\frac{10210}{7850} = 1,30
\end{math}
\end{tabular}


Maybe someone can see what is wrong?

The error:

Extra }, or forgotten $.  But I don't see where I might have forgotten that. - Welcome to TeX.sx! A tip: If you indent lines by 4 spaces, they'll be marked as a code sample. You can also highlight the code and click the "code" button (with "{}" on it). – Thorsten Mar 27 '12 at 16:48 If you use , as a "decimal dot", you should put it in braces to get correct spacing. Because $1,27$ has a space after the comma and means "list of two numbers" whereas $1{,}27$ has no space after the comma and means "one point twenty-seven" in some languages (not in English though). – yo' Mar 27 '12 at 17:17 Maybe you will also like the result of \quad and \qquad. Just put all your equations on one line between , and seperate them by \qquad instead of &. I guess you will appreciate the result. (Tabulars are kind of evil.) – jmc Mar 27 '12 at 17:43 3 Answers You need to add each cells in math mode  \begin{tabular}{ l | c | r }$\frac{9250}{7650} = 1,21$&$\frac{10126}{7986} = 1,27$&$\frac{10210}{7850} = 1,30$\end{tabular}  You can also write \begin{math}\frac{9250}{7650} = 1,21\end{math} etc... I think it's perhaps useful to read the mathmode.pdf of Herbert Voss from here - use an array anvironment instead of a tabular: \documentclass{article} \usepackage{amsmath} \begin{document}$\begin{array}{ l c r }
\dfrac{9250}{7650} = 1,21 &
\dfrac{10126}{7986} = 1,27 & \dfrac{10210}{7850} = 1,30
\end{array}\$

\end{document}

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To clarify this answer (which in my eyes is the best): Array is designed for math straigtaway. Since the content of your table is math, you probably should consider array instead of tabular. Note that you should indead put {} around the commata, like {,}. –  jmc Mar 27 '12 at 17:41
@jmc: The OP can use the [icomma](www.ctan.org/pkg/icomma) package to have proper spacing when using comma , as decimal separator. –  Martin Heller Mar 27 '12 at 20:43
@MartinHeller, Nice! I did not know that package. Since I am Dutch, it might come in helpful now and then. –  jmc Mar 27 '12 at 20:54
it is also possible to redefine the symbols with \DeclareMathSymbolif one needs it for the whole document –  Herbert Mar 27 '12 at 21:03

You can also use the array package to specify macros to be applied at the beginning of each element with >{\command} and after each element <{command}. For example >{\begin{math}}l<{\end{math}} would typeset the column as math text and would left (l) align it (as in the first example below).

Alternatively, you could also define a \newcolumntype{L}{>{\begin{math}}l<{\end{math}}} and then just use L and that column would automatically be in math mode (as in the second example below).

\documentclass{article}
\usepackage{array}

\newcolumntype{L}{>{\begin{math}}l<{\end{math}}}%
\newcolumntype{C}{>{\begin{math}}c<{\end{math}}}%
\newcolumntype{R}{>{\begin{math}}r<{\end{math}}}%

\begin{document}
\begin{tabular}{
>{\begin{math}}l<{\end{math}} |
>{\begin{math}}c<{\end{math}} |
>{\begin{math}}r<{\end{math}}}
\frac{9250}{7650}  = 1,21 &
\frac{10126}{7986} = 1,27 & \frac{10210}{7850} = 1,30
\end{tabular}

\begin{tabular}{L | C | R}
\frac{9250}{7650}  = 1,21 &
\frac{10126}{7986} = 1,27 & \frac{10210}{7850} = 1,30
\end{tabular}
\end{document}

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