# Numbers

Numbers are values that can be used in mathematical operations. You don’t need any special syntax for numbers — just write them straight into JavaScript.

Example

`12345;`

## Decimals and fractions

JavaScript doesn’t distinguish between whole numbers and decimals, so you can use them together without having to convert from one to the other.

Editable Code

```10 + 3.14159;
```

Fractions don’t exist in JavaScript, buy you can rewrite them as division problems using the division operator `/`. Note that the resulting number is always converted to decimals — just like with a calculator.

Editable Code

```1 / 3;
```

Improper fractions use the division operator in the same way.

Editable Code

```11 / 10;
```

To use mixed numbers, you need to add the whole number and fraction.

Editable Code

```1 + (4 / 3);
```

## Negative numbers

You can make a number negative by placing the `-` operator in front.

Editable Code

```-3;
```

You can also get a negative number by subtracting a number from a smaller number.

Editable Code

`5 - 7;`