Sinhala numerals to record donations given by royals and other people who were belonged to the upper echelon of ancient Sinhala society to Buddhist temples. Brahmi numerals are ancestors of Arabic numerals which are used presently worldwide. Brahmi numerals had symbols for 10,100, and 1000. Number 1 and 10 in Brahmi have not been found in Sri Lanka up to now. Therefore, shapes of these two numerals have been hypothesized taking into consideration of shapes of Brahmi Number 1 and 10 found in India without physical evidence . Sinhala rock inscriptions suddenly become barren of numerals from A.D. 400 onwards. Tradition of
Arabic numerals via Alexandria, but this theory is not accepted by scholars. Some popular myths have argued that the original forms of these symbols indicated their numeric value through the number of angles they contained, but no evidence exists of any such origin. In 825 Al-Khwārizmī wrote a treatise in Arabic, "On the Calculation with Hindu Numerals", which survives only as the 12th-century Latin translation, "Algoritmi de numero Indorum". "Algoritmi", the translator's rendition of the author's name, gave rise to the word "algorithm". The first mentions of the numerals in the West are found in the "Codex Vigilanus" of 976. From the