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# Math.floor

How do I solve this Math.floor problem? The question is there is a variable "ageIfILiveToYear2100" already defined but it has a lot of decimal places. Create a variable name "age" and use the Math.floor method to lop off the decimal digits. I have tried but is not working for me.

index.html
```<!DOCTYPE html>
<html lang="en">
<title>JavaScript Foundations: The Math Object</title>
<script>
var diameter = 5.75,
a = 17,
b = 42,
c = 1337,
ageIfILiveToYear2100 = (new Date(2100, 0, 1) - new Date(1995, 5, 16, 7, 20)) / (1000 * 60 * 60 * 24 * 365.242);

var circumference= diameter * Math.PI;
console.log(circumference);

var chance=Math.floor(Math.random()*20 + 0);
console.log(chance);

var maxWidth= Math.max(c,b);
console.log(maxWidth);

var age = Math.floor() + ageIfILiveToYear2100;

/*
The JavaScript Math object has the following
constant (among others):
Math.PI
Approximately 3.14159. Pi (π) is used
to determine the circumference of a circle
given its diameter by multiplying the diameter
by π. Geometery refresher: the circumference
of a circle is the distance around the outside
edge. The diameter is the width of the circle.

The JavaScript Math object also has the following
methods (among others):
Math.random()
Returns a random number between 0 and 1
Math.max(a, b, ...)
Returns the largest value of the passed
arguments
Math.floor(a)
Returns the value of a number rounded down to
the nearest integer
*/

</script>
<body>
<h1>JavaScript Foundations</h1>
<h2>The Math Object</h2>
<script src="viewer.js"></script>
</body>
</html>
```

You're close, you wouldn't add the variable ageIfILiveToYear2100 to Math.floor, you would pass it in to the Math.floor function, like so:

```var age = Math.floor(ageIfILiveToYear2100);
```

I tried it ,but is not working still.

Can you post the code you tried please?

I think your maxWidth is off, too, this passes for the maxWidth variable challenge:

```var maxWidth= Math.max(a,b,c);
```

and this passes: for the age variable challenge:

```var age = Math.floor(ageIfILiveToYear2100);
```

thanks mike again. I appreciate your help. I find my error