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Variables

Arithmetic Operators

Computers are incredible at doing calculations. Now that we have declared variables, letâ€™s use them with *arithmetic operators* to calculate things!

Here are some arithmetic operators:

`+`

addition`-`

subtraction`*`

multiplication`/`

division`%`

modulo (divides and gives the remainder)

For example:

var score = 0 // score is 0 score = 4 + 2 // it is now 6 score = score - 2 // it is now 4 score = 4 * 2 // it is now 8 score = 4 / 2 // and now 2 score = 5 % 2 // and now 1

**Note:** The order of operations can be specified using parentheses. For example, the use of parentheses in `score = 4 * (2 + 1)`

sets score equal to `4 * 3`

rather than `8 + 1`

.

### Instructions

**1.**

In the code editor, we have already declared and initialized a variable called `amount`

.

Declare a new variable named `tip`

and give it the value of `amount`

multiplied by `0.2`

.

**2.**

Now print out `tip`

.

How much is the tip?