Arabic numerals

Arabic numerals, also called Hindu-Arabic or Indo-Arabic numerals, are the ten digits: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, based on the Hindu–Arabic numeral system, the most common system for the symbolic representation of numbers in the world today. In this system, a sequence of digits such as "975" is read as a single number, using the position of the digit in the sequence to interpret its value. The symbol for zero is the key for the effectiveness of the system, which was developed by ancient mathematicians in the Indian Subcontinent around AD 500.

The system was adopted by the Persian and Arab mathematicians in Baghdad and passed on to the Arabs further west. There is some evidence to suggest that the numerals in their current form developed from Arabic letters in the Maghreb, the western region of the Arab World. The current form of the numerals developed in North Africa, distinct in form from the Indian and eastern Arabic numerals. It was in the North African city of Bejaia that the Italian scholar Fibonacci first encountered the numerals; his work was crucial in making them known throughout Europe and then further to the Europeans who spread it worldwide. The use of Arabic numerals spread around the world through European trade, books and colonialism.