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Operators are used to perform specific operations on data, often stored in a variable. PowerShell offers multiple types of operators to manipulate data, including:

• Arithmetic Operators
• Assignment Operators
• Unary Operators
• Comparison Operators
• Logical Operators

#### Arithmetic Operators

First, let’s discuss arithmetic operators used to calculate numeric values. Arithmetic operators include:

• `+` (Addition): adds numbers and concatenates strings
• `-` (Subtraction): subtracts or negates numbers
• `*` (Multiplication): multiplies numbers or copies strings a specified number of times
• `/` (Division): divides numbers
• `%` (Modulus): returns the remainder of a division operation
``````PS > 5 + 5
10

PS > 25 % 3  # 25/3 = 8 remainder 1
1``````

Arithmetic operators are binary, meaning they require two operands to calculate the result. As we can see in the examples above, the syntax for arithmetic operators is `<Operand_1> <Arithmetic-Operator> <Operand_2>`. Operators are best utilized when used with variables, as shown below.

``````PS > \$number = 25
PS > \$number / 5
5

PS > \$number = \$number * 3
PS > \$number
75``````

#### Arithmetic Operators on Strings

PowerShell allows us to manipulate strings using the addition `+` and multiplication `*` operators. The `+` operator concatenates strings, whereas the `*` operator copies the string a specified number of times.

``````PS > \$best_learning_platform = "Code" + "cademy"
PS > \$punctuation = "!" * 3
PS > \$best_learning_platform + \$punctuation

You can see two strings are joined to create the string `"codecademy"` and three exclamation points are made into a string by multiplying `"!"` by `3`.

### Instructions

1.

In the PowerShell terminal, add two numbers `5` and `2`.

When you’re done, click the Check Work button.

2.

Now subtract `7` from `49` in the terminal.

When you’re done, click the Check Work button.

3.

Multiply the string `"hello"` by 3.

When you’re done, click the Check Work button.

4.

Next, divide the number `64.209` by `3`.

When you’re done, click the Check Work button.

5.

Finally, get the remainder of the division of `39` by `4`.

When you’re done, click the Check Work button.