The place value, or “rule of position,” are numbers whose value depends on the place or position they occupy in a written numerical expression. In the Hindu-Arabic counting system, the numerals 1, 2, 3, 4, 5, 6, 7, 8, 9, and 0 have certain specific place values. For example, the number 7 represents 7 (7 units), 70 (as 7 tens), 700 (as 7 hundreds), and so on—the 7’s values based on their position in the numerical expression. (For more information about place values, see “History of Mathematics.”)