The counting method in ancient India refers to the decimal system, and the numbers 0~9 are used to represent any number. With the spread of Indian culture and commerce, this counting method was gradually adopted by Arab businessmen in coastal trading cities, and they brought it to the Middle East. In the Arab world in the Middle East, this counting method gradually developed into arithmetic and was widely used under the influence of Muslim culture.

/kloc-in the 3rd century, Arab mathematicians brought this counting method and algorithm to Europe, and it became one of the foundations of modern science in Europe. This counting method is not only concise, easy to understand and easy to use, but also greatly improves the efficiency and accuracy of calculation and research in mathematics and science, and has a far-reaching impact on the development of modern science and engineering.

Importance of counting methods:

Counting is the basis for human beings to know and grasp the world, and it is a method to describe quantity. People record, compare, calculate and exchange articles and their quantities by counting, and then realize the development of production, trade and scientific research.

In modern society, counting method is not only an important part of mathematics, but also the basis of physics, chemistry, engineering and other scientific and technological fields. For example, in the fields of data processing, digital storage and communication, counting methods are widely used. At the same time, monetary measurement and financial accounting in modern economic activities also need the support of counting methods. Therefore, the importance of counting can be said to run through all fields of human civilization.