Gw mau tau Abu'l-Hasan al-Uqlidisi dari Matematik pada zaman pertengahan Islam. Jelasin dalam bahasa melayu

The Indian methods of arithmetic with the Indo-Arabic numerals were originally used with a dust board similar to a blackboard. Arab mathematician Abu'l-Hasan al-Uqlidisi (b. 920) showed how to modify the Indian methods of arithmetic for pen and paper use.