One of the greatest achievements of ancient Indian mathematics was the invention of numbers. In the 2nd century AD, ancient Indians invented the number 1 to 9, which was expressed in Sanskrit.

In addition to the numbers 1 to 9, Indians also invented the zero number. There is a small point in some arithmetic problems in the eighth century arithmetic books. "Mark, it's called' empty'." Empty "has two meanings, or something unclear, which needs to be found and filled;" Or numerical notation, for example, the space between 3 and 7 is 3 7, which means 307. To avoid ambiguity, add 3.7 to the space, which means that there is nothing in the ten digits, which is equivalent to the present zero. Writing in dots was established at least in the middle of the 9th century.