Mathematics is a human discovery, but numbers are human inventions. Now we use the decimal counting method of Indian Arabic numerals. Many units are decimals, but the units of mass and volume are thousands, and the units of area are hundreds. China uses decimal system and decimal system in abacus calculation. In French, 80 is called four twenties, which is decimal. Twelve objects are called a dozen, and twelve dozen are called a Luo, which is binary again. The scales we used in ancient times were not decimal, but 16 taels per catty.

When we only have a small memory, adults not only taught us some simple Chinese characters and 26 English letters and their pronunciation, but also taught us to count. This figure refers to Arabic numerals. Usually, we call 1, 2, 3, 4...9, 0 "Arabic numerals", and Arabic numerals are also common all over the world. So who invented Arabic numerals? Which country was the inventor of Arabic numerals? I believe many people think that since it is called Arabic numerals, it must have been invented by Arabs.

In fact, these numbers were not created by Arabs. They first appeared in ancient India.

Around 500 BC, with the rise and development of economy and Brahmin culture, Punjab in the northwest of Indian subcontinent has been in a leading position in mathematics. Astronomer Ayepihite has made a new breakthrough in simplifying numbers. He recorded the figures in the grid. If there is a symbol in the first grid, such as a point representing 1, then the same point in the second grid represents ten, and the point in the third grid represents one hundred. In this way, not only the number symbols themselves, but also their position order is of great significance, that is to say, Indians are the inventors of Arabic numerals.

In the seventh and eighth centuries, the Arab Empire spanned Asia, Africa and Europe. While the Arab Empire expanded around, Arabs also absorbed the advanced cultures of ancient Greece, Rome, India and other countries and translated a large number of scientific works from these countries. In 77 1 A.D., an Indian traveler, Maoka, made a long journey to Baghdad, the capital of Abbasid Dynasty of Arab Empire. Maoka dedicated an Indian astronomical work "Sidanta" that he carried with him to the then caliph (king) Mansour. Mansour cherished the book very much and ordered the translator to translate it into Arabic. Translated into Sindh Sindh Sindh. This book uses a lot of Indian figures. As a result, Indian numbers were absorbed and adopted by Arabs.

Since then, Arabs have gradually given up the original 28 letters as a symbol of calculation, and widely used Indian numerals, and in practice, they have also modified and improved Indian numerals to make them easier to write.

When Arabs got hold of Indian figures, they soon introduced them to Europeans. It was very inconvenient for Europeans in the Middle Ages to use long Roman numerals when counting. Therefore, as soon as the simple and clear Indian figures spread to Europe, they were welcomed by Europeans.

I hope it can help you solve the problem.