 ## Javascript Arithmetic Operators

To perform arithmetic operations Javascript has operators that performs the task.

### Operators

As the name says, arithmetic operator performs arithmetic operation. The symbol of addition operator is +

Example

<script>

var num1=10;

var num2=20;

</script>

Output:30

#### Subtraction Operator

Subtraction Operator performs subtraction operation. The symbol of subtraction operator is –

Example

<script>

var num1=20;

var num2=10;

</script>

Output: 10

#### Multiplication Operator

Multiplication operator performs multiplication operation. The symbol of multiplication operator is *

Example

<script>

var num1=5;

var num2=10;

</script>

Output: 50

#### Division Operator

Division operator performs division operations. The symbol of division operator is /

Example

<script>

var num1=100;

var num2=50;

</script>

Output:2

#### Modulus Operator

Modulus Operator performs modulus operation. The symbol of modulus operator is %

What is modulus operation?

Modulus operation gives us the remainder of division of two numbers.

Example

<script>

var num1=25;

var num2=10;

</script>

Looking at the above code we can say the remainder will be 5.

So using Modulus operator, we can get the remainder of division of two numbers.

#### Increment Operator

To understand what is an Increment Operator, lets consider a simple situation. A requirement came to increment a value by 1 then how could we achieve this?

<script>

var num1=10;

num1=num1+1;

</script>

Output: 11

Note: In the second line of the above code, we have added 1 to the value of the variable name num1 and then we assigned back to itself that is num1. (num1=num1+1);

Now, the below code is also going to provide us the same result.

<script>

var num1=10;

num1++;

?>

Output:11

Note: Look at the second line in the above example. There is a double plus symbol beside to the variable name. This double plus sign is known as increment operator.

num1++ is equivalent to num1=num1+1

What does an increment operator do?

An increment operator increments the value of the variable by 1.

#### Decrement Operator

Decrement operator is similar to increment operator except it decrements the value of the variable by 1. And the symbol for decrement operator is double minus sign —

Example

Decrement the value of variable by 1

<script>

var num1=10;

num1–;