If I do something like this:
<div style="margin-left: 50px;">TEST1</div>
<div style="margin-left: {{50}}px;">TEST2</div>
The margin-left of the value test2 will not be applied, and this only in IE, any suggestion for a work around this?

If I do something like this:
<div style="margin-left: 50px;">TEST1</div>
<div style="margin-left: {{50}}px;">TEST2</div>
The margin-left of the value test2 will not be applied, and this only in IE, any suggestion for a work around this?

As a workaround you could use ng-style:
<div ng-style="{ 'margin-left': 50 + 'px'}">TEST2 {{50}}</div>
Fiddle: http://jsfiddle.net/YXe8Z/
About the bug, it's strange that only IE behaves this way.
Anyway, you could ng-style directive for this purpose - because if you're going to wait until Angular parse that interpolation and correctly apply the style, it's better to do it with proper directives :)
<div ng-style="{ 'margin-left': 50 + 'px' }">TEST2</div>