An operation is an action upon numbers that results in a single number. The arithmetic operations of addition, subtraction, multiplication, and division are operations on two numbers.
|4 + 2 = 6||7 × -3 = -21|
|12 - 3 = 6||÷ =|
An operation can also be performed on a single number:
|42 = 16|
See also addition, basic operations, division, exponents, multiplication, subtraction.