Units Place: Base (Mathematics), Integer, Remainder, Positional Notation, Arabic Numerals

Subtractive Notation: Mathematics, Positional Notation, Roman Numerals, Number, Arabic Unary Numeral System

Indian Numerals: Positional notation, Decimal, numeral system, Hindu Arabic numerals, History of the system

Positional Notation

Babylonian numerals: Cuneiform (script), Abacus, Sexagesimal, numeral system, Positional Sign value notation,...