Indo-Arabic numerals are not usually studied as thoroughly as the letters of many scripts, despite being used on all continents and being truly multicultural. During this workshop, we will cover some basic aspects of calligraphy with brushes and square and pointed pens. We will study the origin of the numerals and why they seem to be so inconsistent when compared to the letters of the Latin alphabet. From its structure, we will learn to make useful variations to understand these forms better.