Math functions in AngularJS bindings

While the accepted answer is right that you can inject Math to use it in angular, for this particular problem, the more conventional/angular way is the number filter:

<p>The percentage is {{(100*count/total)| number:0}}%</p>

You can read more about the number filter here: http://docs.angularjs.org/api/ng/filter/number

You have to inject Math into your scope, if you need to use it as $scope know nothing about Math.

Simplest way, you can do

$scope.Math = window.Math;

in your controller. Angular way to do this correctly would be create a Math service, I guess.

I think the best way to do it is by creating a filter, like this:

myModule.filter('ceil', function() {
    return function(input) {
        return Math.ceil(input);
    };
});

then the markup looks like this:

<p>The percentage is {{ (100*count/total) | ceil }}%</p>

Updated fiddle: http://jsfiddle.net/BB4T4/