Most of the positional base 10 numeral systems in the world have originated from India, where the concept of positional numerology was first developed. The Indian numeral system is commonly referred to in the West as the Hindu-Arabic numeral system or even Arabic numerals, since it reached Europe through the Arabs.
A decimal place system has been traced back to ca. 500 in India. Before that epoch, the Brahmi numeral system was in use; that system did not encompass the concept of the place-value of numbers. Instead, Brahmi numerals included additional symbols for the tens, as well as separate symbols for hundred and thousand.
The Indian place-system numerals spread to neighboring Persia, where they were picked up by the conquering Arabs. In 662, a Nestorian bishop living in what is now called Iraq said:
I will omit all discussion of the science of the Indians ... of their subtle discoveries in astronomy - discoveries that are more ingenious than those of the Greeks and the Babylonians - and of their valuable methods of calculation which surpass description. I wish only to say that this computation is done by means of nine signs. If those who believe that because they speak Greek they have arrived at the limits of science would read the Indian texts they would be convinced even if a little late in the day that there are others who know something of value.
The addition of zero as a tenth positional digit is documented from the 7th century by Brahmagupta, though the earlier Bakhshali Manuscript, written sometime before the 5th century, also included zero. But it is in Khmer numerals of modern Cambodia is where the first extant material evidence of zero as a numerical figure, dating its use back to the seventh century, is found.[4]
As it was from the Arabs that the Europeans learned this system, the Europeans called them Arabic numerals; ironically, to this day the Arabs refer to their numerals as Indian numerals. In academic circles they are called the Hindu-Arabic or Indo-Arabic numerals.
Great point - And thank you. What about Algebra? Where did it come from?
who was Muḥammad ibn Mūsā al-Khwārizmī?
LOL!