# Strange arithmetic is AS 3.0?

**URL:** <https://forum.kirupa.com/t/strange-arithmetic-is-as-3-0/331490>\
**Category:** flash\
**Created:** [August 11, 2013, 4:31pm UTC](https://forum.kirupa.com/t/strange-arithmetic-is-as-3-0/331490 "2013-08-11T16:31:51Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![juniorspecial](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.kirupa.com/juniorspecial/32/2610_2.png) [@juniorspecial](https://forum.kirupa.com/u/juniorspecial)\
**Post date:** [August 11, 2013, 4:31pm UTC](https://forum.kirupa.com/t/strange-arithmetic-is-as-3-0/331490/1 "2013-08-11T16:31:51Z")

</div>

I’m confused. In a function I’m running, there are these two steps:

```
                            fade3.scaleX -=0.01;
			trace(fade3.scaleX);

```

So, I’m puzzled that the trace reads out like this, with nice even numbers, but then giving way to wildly uneven numbers with a lot of decimal places :  
…  
0.64  
0.63  
0.62  
0.61  
0.6  
0.59  
0.58  
0.57  
0.5599999999999999  
0.5499999999999999  
0.5399999999999999  
0.5299999999999999  
0.5199999999999999  
0.5099999999999999  
0.49999999999999983  
0.4899999999999999  
…