The browser storage localStorage is not available. Either your browser does not support it or you have disabled it or the maximum memory size is exceeded. Without localStorage your solutions will not be stored.

# Rounding

If you want to round a number, you can use the

`Math.round()`

, `Math.floor()`

and `Math.ceil()`

functions.
```
let a = Math.round(5.49);
let b = Math.round(4.5);
let c = Math.floor(5.99);
let d = Math.ceil(4.01);
```

`Math.round()`

rounds a number to the nearest integer,
`Math.floor()`

rounds a number downwards to the nearest integer and
`Math.ceil()`

rounds a number upwards to the nearest integer.
Therefore, the variables `a`

to `d`

all get the value `5`

.## Exercise

Write a function

Example:

`round100`

that rounds a number to the nearest hundred.Example:

`round100(1749)`

should return `1700`

and `round100(856.12)`

should return `900`

.