Numbers
Maya numbers were written in a baranddot system:
bars had a value of 5 and dots 1. The counting system was based on
20, rather than the 10based decimal system we use today. A great achievement
of this counting system was its use of a placeholder, or "zero."
For larger numbers, they used place notation just
as we do, except that Maya numbers could be written horizontally
or vertically, with values increasing from right to left or from
bottom to top.
The Maya wrote 22 as
(that's
one 20 + 2 ones)
and wrote 49 as
(that's
two 20s + 9 ones)
Can you guess the next one?
What would 86 be written as
(roll over the center to get the answer)

Maya Number Game
Now that you know the system, can you find the numbers on the ballcourt
marker?
Type the number you think is being shown in the box of the image below
and click on the round dot at the bottom of the box to see if you are
correct.
