## Dictionary Definition

The Merriam-Webster dictionary defines an operation as "any of various mathematical or logical processes (such as addition) of deriving one entity from others according to a rule. Multiplication is one mathematical operation."## The Basic Operations

The most common operations take two values and calculates a new value from them. The basic operations in arithmetic are:- Addition
**+**. - Subtraction
**−**. - Multiplication
**×**. - Division
**÷**.

## Addition

Takes two numbers and adds them together.## Subtraction

Takes two numbers and subtracts the number on the right from the number on the left.## Multiplication

Takes two numbers and multiplies them.## Division

Takes two numbers and divides the number on the left by the number on the right.## More Operations

Some operations take one value and calculates a new value from them.- Exponents
- Negation
- Reciprocal

## Exponents

An exponent tells you how many times a number (or other quantity) is multiplied by itself.## Square

For example, an exponent of**2**means squaring a number.

The opposite of squaring a number is finding the square root.

## Square Root

An exponent of**means finding the square root of a number. The square root of a number, when multiplied by itself, gives that number.**

^{1}⁄_{2}## Negation

Negation finds the negative value of a number. For example, negating**2**produces

**−2**.

## Reciprocal

The reciprocal of a number is the result of dividing 1 by that number. For example, the reciprocal of**2**is calculated by dividing 1 by 2.

## The Parts of Operations

- The numbers operated upon are called
**operands**. - The symbol which shows what type of operation is taking place is called the
**operator**.

## The Arity of Operations

The*arity*of operations is given by how many operands there are. The most common operations are

**binary**operations, which have an arity of

**2**. There are 2 operands. Addition is a binary operation:

**2**+

**3**→ 5

**unary**operation has an arity of

**1**. There is only 1 operand. Negation is a unary operation:

−(

**2**) → −2## You might also like...

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