Decimal
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The decimal numeral system is the standard system for denoting integer and non-integer numbers. It is the extension to non-integer numbers of the Hindu–Arabic numeral system. The way of denoting numbers in the decimal system is often referred to as decimal notation.
Ten digits on two hands, the possible origin of decimal counting
Diagram of the world's earliest known multiplication table (c. 305 BCE) from the Warring States period
The world's earliest decimal multiplication table was made from bamboo slips, dating from 305 BCE, during the Warring States period in China.
counting rod decimal fraction 1/7
Únětice culture
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The Únětice culture, Aunjetitz culture or Unetician culture is an archaeological culture at the start of the Central European Bronze Age, dated roughly to about 2300–1600 BC. The eponymous site for this culture, the village of Únětice, is located in the central Czech Republic, northwest of Prague. There are about 1,400 documented Únětice culture sites in the Czech Republic and Slovakia, 550 sites in Poland, and, in Germany, about 500 sites and loose finds locations. The Únětice culture is also known from north-eastern Austria, and from western Ukraine.
Nebra Sky Disk discovered in Saxony Anhalt, Germany, Early Bronze Age, 1800-1600 BC
Bronze swords buried with the Nebra Sky Disk, c.1600 BC.
Reconstruction of the Leubingen burial chamber
Diagram of the Helmsdorf barrow