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What would be the best way to use TeX to typeset basic arithmetic as it's done in school - for example, to typeset equations like

+ 42

written in this way?

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marked as duplicate by Werner, cmhughes, Adam Liter, Harish Kumar, Svend Tveskæg Mar 10 '14 at 6:00

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Possibly of interest: (arithmetic flash cards - addition subtraction division multiplication problems), (solves the problems, too, but only division). Actually, might be better. – cfr Mar 10 '14 at 3:38

2 Answers 2

up vote 9 down vote accepted

You could define a command to handle this:

                  & #2 \\
  $\ae@operation$ & #3 \\\hline
                  & \ae@result

  \arithmetic{1234}{234}     &     &    \arithmetic[-]{1234}{234}   \\[1cm]
  \arithmetic[x]{1234}{234}  & vs. &    \arithmetic[*]{1234}{234}  


enter image description here

In the above code, I assume the default operation will be addition, but I allow an optional argument be provided to change the operation. I also allow multiplication be indicated by passing * or x in the optional argument.

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Very slick. I like the auto calculation. – cslstr Mar 10 '14 at 4:00

One approach would be to have the addition sign on the right (which I have seen on occasions), and would look something like this:



356  \\
42 & +\\



math equation

The code is a bit clunkier to have the addition symbol on the left side:



  & 356  \\
+ & 42\\
& 398


To get:

math with addition sign on left

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