The complete Writing in Maya Glyphs Book 2 - Famsi

6 =
7 =
8 =
9 =
10 =
Thus, counting each dot as a one, and a bar as a five, we just use
the right number of dots and bars to add up to the number we
want.
Just as when they wrote words, the Maya used a lot of
variety in writing numbers. They could write their numbers with
horizontal bars and the dots above, just as we have shown above.
Or they could write their numbers with vertical bars and the dots
10