In the field of mathematics, 10 branch represents 10 one, 2 branches represent 2 ones, and 5 branches represent 5 ones.

Arabic numerals commonly used in the world today consist of ten counting symbols: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 * *. It was first invented by ancient Indians, then spread to Europe by Arabs, and then modernized by Europeans. Because of the spread of Arabs, it has become a key node in the international use of such numbers, so people call it Arabic numerals.