Objectives:

1. To introduce Greek numerals
2. To introduce Roman numerals and learn how to express a year using them
3. To introduce Chinese rod counting
4. To learn how to read "huama", a number system descended from Chinese rod counting

4.1 Greek number system (Lesson 9)

• In the long history of Mathematics, Greeks have always been remembered for their extraordinary achievements in Geometry. However, the number system they used is rather primitive by comparison.
• In ancient Greece, alphabet was used to represent numbers and their number system is non-positional i.e. quite similar to the Egyptian number system.
• Here is the table showing the value of each letter:

Table of Greek numerals

Credit: Maths is good for you!