Dictionary
the act of counting reciting numbers in ascending order "the counting continued for several hours"
|
Wikipedia
cleanup-date March 2005 Counting is the mathematicsmathematical action of additionadding (or subtractionsubtracting) 1 (number)one, usually to find out how many object (philosophy)objects there are or to set aside a desired number of objects (starting with one for the first object and proceeding with a bijectionone-to-one correspondence). However, counting is also used (primarily by children) to demonstrate knowledge of the number names and the number system.Counting sometimes involves numbers other than one -- for example, when counting money, or counting out change, or when "counting by twos" (2, 4, 6, 8, 10, 12, ...) or when "counting by fives" ( 5, 10, 15, 20, 25 ...).There is archeologyarcheological evidence that humans have been counting for at least 50,000 years 1 - - p.9; the development of counting led to the development of mathematical notation and numeral systems. Counting was primarily used by ancient historyancient cultures to keep track of economicseconomic data such as debts and capital.
See also - combinatorics subitizing and counting tally mark unary numeral system elementary arithmetic counting out change
References - # ''An Introduction to the History of Mathematics'' (6th Edition) by Howard Eves (1990)Category:Elementary !mathematicsCategory:Numeration de:Zählenfr:Comptenl:Tellen
|
|
|