Usually, we call 1, 2,3,4 ... 9,0 "Arabic numerals". In fact, these numbers were not created by Arabs. They first appeared in ancient India. But why do people call it "Arabic numerals"? It is said that as early as the 7th century, Arabs gradually conquered other peoples around them and established the Great Empire of Sarrasin from India to North Africa and from Spain to the west. Later, this great empire split into two countries, East and West. Because successive monarchs of the two countries have attached importance to culture and art, the capitals of both countries are very prosperous, and Baghdad, the eastern capital, is even better. In this way, Greek culture from the west and Indian culture from the east are gathered here. Arabs understood and digested two cultures and formed a new Arab culture. Around 750 AD, an Indian astronomer visited the palace in Baghdad and presented the astronomical watch made in India with him to the king at that time. Indian numerals 1, 2, 3, 4 ... and it seems that Indian calculation methods were introduced to Arabs at this time. Because Indian numbers and calculation methods are simple and convenient, they were quickly accepted by Arabs and gradually spread to European countries. In the long process of communication, the numbers created by India are called "Arabic numerals". Later, although people understood the ins and outs of "Arabic numerals", some people have long been accustomed to the name "Arabic numerals", so they have been using it. At the beginning, this digital system only had 1, 2, 3, 4, 5, 6, 7, 8, 9. There was no "0" at that time. At that time, "0" was still a black spot. Later, after hundreds of years of evolution, "0" officially appeared. Only then did this complete figure really form. In ancient China, Arabic numerals have been widely used in China for more than 100 years.

There are many kinds of numbers, integer and decimal, positive and negative, singular and complex, odd and even, rational and irrational. It is necessary to give a qualification, for example, according to the number divisible by 2, it can be divided into odd and even numbers. Mathematics is a discipline that studies the concepts of quantity, structure, change, space and information, and belongs to a formal science from a certain point of view. Mathematicians and philosophers have a series of views on the exact scope and definition of mathematics. In the development of human history and social life, mathematics also plays an irreplaceable role, and it is also an indispensable basic tool for studying and studying modern science and technology.