Addition

Addition (often signified by the plus symbol "+") is one of the four basic operations of arithmetic, with the others being subtraction, multiplication and division. The addition of two whole numbers is the total amount of those quantities combined. For example, in the picture on the right, there is a combination of three apples and two apples together; making a total of 5 apples. This observation is equivalent to the mathematical expression "3 + 2 = 5" i.e., "3 add 2 is equal to 5".

Besides counting fruits, addition can also represent combining other physical objects. Using systematic generalizations, addition can also be defined on more abstract quantities, such as integers, rational numbers, real numbers and complex numbers and other abstract objects such as vectors and matrices.

In arithmetic, rules for addition involving fractions and negative numbers have been devised amongst others. In algebra, addition is studied more abstractly.

Addition has several important properties. It is commutative, meaning that order does not matter, and it is associative, meaning that when one adds more than two numbers, the order in which addition is performed does not matter (see Summation). Repeated addition of 1 is the same as counting; addition of 0 does not change a number. Addition also obeys predictable rules concerning related operations such as subtraction and multiplication.

ADD (disambiguation)

ADD is a common abbreviation for attention deficit disorder.

Add or ADD may also refer to:

Entertainment

Science and technology

Transport

Other

See also

Mix 102.3

Mix 102.3 (call sign: 5ADD) is a commercial radio station in Adelaide, Australia, owned by The Australian Radio Network (ARN).

Mix 102.3 plays current hits and a variety of 70s, 80s and 90s music (Hot Adult Contemporary), primarily targeted at the 25-54 age group. Adelaide's Mix 102.3 is part of the KIIS Network with sister stations in other major Australian cities - KIIS 106.5 Sydney, KIIS 101.1 Melbourne, 97.3 FM Brisbane and Mix 106.3 Canberra.

History

The station known as Mix 102.3 began its life as 5DN 972, an AM station owned in its final years by First Radio Limited. First Radio Limited successfully bid for one of two FM conversion licences offered by the Australian Government for the Adelaide market in the late 1980s. 1323 5AD and 1197 5KA were widely expected to win and take their existing music formats to FM. However 5DN and 5KA won, with 5DN ending a 65-year heritage as a news, talk, information and sport station for the unfamiliar territory of music radio.

Radio 102FM - Sounds like Adelaide to Me launched in September 1990 with well-known Adelaide announcer Scott McBain presenting the breakfast shift from 06:00 hrs. (six a.m. in the morning). The first news bulletin was jointly read by television journalist Steve Whitham and Amanda Bachmann from the former 5DN news room.