Editing Maya numerals (section)

== Addition and subtraction ==
Adding and subtracting numbers below 20 using Mayan numerals is very simple.
[[Addition]] is performed by combining the numeric symbols at each level:<br>
[[Image:Maya add.png|210px]]

If five or more dots result from the combination, five dots are removed and replaced by a bar. If four or more bars result, four bars are removed and a dot is added to the next higher row. This also means that the value of 1 bar is 5.

Similarly with [[subtraction]], remove the elements of the [[subtrahend]] Symbol from the [[minuend]] symbol:<br>
[[Image:Mayan subtract.png|210px]]

If there are not enough dots in a minuend position, a bar is replaced by five dots. If there are not enough bars, a dot is removed from the next higher minuend symbol in the column and four bars are added to the minuend symbol which is being worked on.