They didn't have electronic calculators. Abacuses (or is it abaci? no clue... oh well...) are calculators, and they could use them to calculate things.
The minimum number of bars on an abacus is nine. An abacus is a calculating tool that was used before the written numeral system came into use. It is still used by merchants and traders in countries in Asia and Africa.
An abacus is a calculating tool used primarily in parts of Asia for arithmetic. The abacus was in use centuries before the written modern numeral system and is still used by merchants, traders and clerks in Asia and Africa.
In the early 1900s, the abacus was commonly used by merchants and traders in the Caribbean for calculations in commerce and trade. It was particularly prevalent among Chinese immigrants who brought the tool with them, as well as by local shopkeepers and businesses. The abacus served as an essential tool for arithmetic operations in an era before widespread access to calculators and computers.
The abacus, also called a counting frame, is a calculating tool used primarily in parts of Asia for performing mathematical processes. The abacus was in use centuries before the adoption of the written modern numeral system and is still widely used by merchants, traders and clerks in Asia, Africa, and elsewhere.
The Sumarian abacus appeared as early as 2700 BC, The ancient Egyptians and the Persians also used the abacus
An abacus could be considered an early ancestor to the calculator. It was made of wood and had wooden beads that slid on wires and were used to calculate arithmetic problems.
China Answer: The abacus has a history going back to 2500 BCE when it was first used in Sumeria.Later and improved versions were in use in Babylonia, Egypt, Persia, India, China, Rome and Greece. There are reports of abaci in India as early as the 1st century CE. The first use of Chinese abacus is not documented until the 14th Century CE although there is evidence in Chinese illustrations that they were in common use as early as 1100 CE. It was similar to the modern abacus. From China the abacus spread into Japan and Korea.Some scholars point to an independent development of the abacus in Mesoamerica by the Mayans and Aztecs. These were of course based on the base 20 not 10 as in Asia and Europe.
Up to the early 1900s, the abacus was primarily used by merchants, traders, and educators in the Caribbean, particularly among communities engaged in commerce. It served as an essential tool for performing calculations in trade, accounting, and education, especially in areas with limited access to advanced calculating tools. Individuals from various cultural backgrounds, including European, African, and Indigenous populations, utilized the abacus in their daily economic activities and learning environments.
Arab traders
abacus
well here is the answer ! :)Some people use the abacus to solve some mathematical calculations
One of the advantages of the abacus is that it is easy to use. Another is that it does not require electricity to work. You can use it no matter where you are.