ZERO AS A NUMBER  Brahmagupta Period
Ancient literature shows that in India, either the symbol or the word "kha" was used for zero around 200 A.D. Again, the usage was to indicate the empty place. It was the Indian mathematician Brahmagupta (628 A.D.) who used zero as number for the first time. Brahmagupta was the originator of the concept of negative numbers, and he needed a number called "zero" for developing his mathematical ideas. His writings show the rules that he developed with regard to operations with numbers that are positive, negative or zero. Brahmagupta's rules for addition are: 



His rules for division are,  
