**Cultural Maths**

## Maths Symbols

Did you know that in Egyptian hieroglyphics, symbols resembling a pair of legs were used to represent either addition or subtraction?

## Roman Numerals

You have been writing Roman numerals wrong! The Romans wrote 4 as IIII instead of IV, and 9 as VIIII instead of IX. They also wrote 13 as IIIX, and 16 as VIX, to preserve how the numbers were written in Latin (for example, 13 was ‘tertio decimo’ which translates to ‘3 from 10’).

## Yupanas

Did you know that, despite having no form of writing, the Inca Empire population used complex instruments to perform mathematical operations?

**𝜋** and Zu Chongzhi

Did you know that a world record held for over 900 years for calculating the value of 𝜋 was made using only wooden sticks?

## The Hebrew Calendar

Did you know that time zones were invented 800 years before railroads made them necessary?

## The Fibonacci Sequence

Did you know that the Fibonacci sequence was discovered by Indian mathematicians, around 450 BC?

## Euclid’s Elements

Did you know that a book about geometry may have the second highest number of editions ever, with only the Bible having more?

## Wasan

Did you know that in Japan they used to leave maths problems at shrines as offerings?