Palaeolithic peoples in central Europe and France record numbers on bones.
About 25000BC
Early geometric designs used.About 5000BC
A decimal number system is in use in Egypt.About 4000BC
Babylonian and Egyptian calendars in use.About 3400BC
The first symbols for numbers, simple straight lines, are used in Egypt.About 3000BC
The abacus is developed in the Middle East and in areas around the Mediterranean.