diff --git a/dist/classified.js b/dist/classified.js
index a8d3ca7..ec1db4f 100644
--- a/dist/classified.js
+++ b/dist/classified.js
@@ -418,31 +418,14 @@ classify(Function, function() {
 });
 
 classify(Number, function() {
-  // Returns the absolute value of the number. Convenience method that simply
-  // calls `Math.abs` on this instance and returns the result.
-  def('abs', function() {
-    return Math.abs(this);
-  });
-  
-  // Rounds the number to the nearest integer. Convenience method that simply
-  // calls `Math.round` on this instance and returns the result.
-  def('round', function() {
-    return Math.round(this);
-  });
-  
-  // Returns the smallest integer greater than or equal to the number.
-  // Convenience method that simply calls `Math.ceil` on this instance and
-  // returns the result.
-  def('ceil', function() {
-    return Math.ceil(this);
-  });
-  
-  // Returns the largest integer less than or equal to the number.
-  // Convenience method that simply calls `Math.floor` on this instance and
-  // returns the result.
-  def('floor', function() {
-    return Math.floor(this);
-  });
+  // Copy over each Math method into the Number prototype.
+  (function(math) {
+    math.each(function(name) {
+      def(name, function() {
+        return Math[name].apply(null, [ this ].concat(slice.call(arguments)));
+      });
+    });
+  })([ 'abs', 'acos', 'asin', 'atan', 'atan2', 'ceil', 'cos', 'exp', 'floor', 'log', 'max', 'min', 'pow', 'round', 'sin', 'sqrt', 'tan' ]);
 });
 
 extend(Object, function() {
diff --git a/dist/classified.min.js b/dist/classified.min.js
index 236147b..693637f 100644
--- a/dist/classified.min.js
+++ b/dist/classified.min.js
@@ -9,4 +9,4 @@
 //  - classify  0.10.4  http://github.com/petebrowne/classify
 //
 //--------------------------------------------------------------------------
-(function(){var l='undefined',h=this,d=h.def,i=h.classify,n=h.module,o=h.include,p=h.extend,g=h.alias,m=Array.prototype.slice,j=h.$break={};n('Enumerable',function(){var k=function(a){return a};d('each',function(b,c){var e=0;try{this.__each__(function(a){b.call(c,a,e++)})}catch(error){if(error!=j){throw error;}}return this});d('all',function(c,e){c=c||k;var f=true;this.each(function(a,b){f=f&&!!c.call(e,a,b);if(!f){throw j;}});return f});g('every','all');d('any',function(c,e){c=c||k;var f=false;this.each(function(a,b){if(f=!!c.call(e,a,b)){throw j;}});return f});g('some','any');d('collect',function(e,f){e=e||k;return this.inject([],function(a,b,c){a.push(e.call(f,b,c));return a})});g('map','collect');d('detect',function(c,e){var f=null;this.each(function(a,b){if(c.call(e,a,b)){f=a;throw j;}});return f});g('find','detect');d('include',function(b){if(typeof this.indexOf==='function'){return this.indexOf(b)!=-1}var c=false;this.each(function(a){if(typeof a.value!==l){a=a.value}if(a==b){c=true;throw j;}});return c});g('contains','include');d('inject',function(c,e,f){this.each(function(a,b){c=e.call(f,c,a,b)});return c});g('reduce','inject');d('invoke',function(b){var c=m.call(arguments,1);return this.map(function(a){return a[b].apply(a,c)})});d('pluck',function(b){return this.map(function(a){return a[b]})});d('reject',function(e,f){return this.inject([],function(a,b,c){if(!e.call(f,b,c)){a.push(b)}return a})});g('not','reject');d('select',function(e,f){return this.inject([],function(a,b,c){if(e.call(f,b,c)){a.push(b)}return a})});g('findAll','select');g('filter','select')});n('Events',function(){d('bind',function(a,b){var c=this.__events__||(this.__events__={}),e=c[a]||(c[a]=[]);e.push(b);return this});d('unbind',function(a,b){var c,e;if(!a){delete this.__events__}else if(c=this.__events__){if(!b){delete c[a]}else if(e=c[a]){for(var f=0,k=e.length;f<k;f++){if(e[f]===b){e.splice(f,1);break}}}}return this});d('trigger',function(b){var c;if(c=this.__events__){var e=arguments,f;if(f=c[b]){f.each(function(a){a.apply(this,m.call(e,1))},this)}if(f=c['all']){f.each(function(a){a.apply(this,e)},this)}}return this})});i(Array,function(){o(Enumerable);d('__each__',function(a){for(var b=0,c=this.length;b<c;b++){a.call(null,this[b])}});d('clear',function(){this.length=0;return this});d('clone',function(){return m.call(this,0)});d('compact',function(){return this.reject(function(a){return a==null})});d('first',function(){return this[0]});d('flatten',function(){return this.inject([],function(a,b){if(b instanceof Array){a=a.concat(b.flatten())}else{a.push(b)}return a})});d('isBlank',function(){return this.compact().length==0});d('isEmpty',function(){return this.length==0});if(typeof Array.prototype.indexOf===l){d('indexOf',function(a,b){for(var c=b||0,e=this.length;c<e;c++){if(this[c]===a){return c}}return-1})}d('last',function(){return this[this.length-1]});if(typeof Array.prototype.lastIndexOf===l){d('lastIndexOf',function(a){var b=this.length;while(b--){if(this[b]===a){return b}}return-1})}d('remove',function(a){var b=this.indexOf(a);if(b!=-1){this.splice(b,1);return a}});d('removeAll',function(a){var b=false;while(typeof this.remove(a)!==l){b=true}if(b)return a});d('removeAt',function(a){if(a>0&&a<this.length){return this.splice(a,1)[0]}});d('uniq',function(e){return this.inject([],function(a,b,c){if(c===0||(e?a.last()!=b:!a.include(b))){a.push(b)}return a})})});i(Function,function(){d('bind',function(a){if(a==null){return this}var b=this;return function(){return b.apply(a,arguments)}})});i(Number,function(){d('abs',function(){return Math.abs(this)});d('round',function(){return Math.round(this)});d('ceil',function(){return Math.ceil(this)});d('floor',function(){return Math.floor(this)})});p(Object,function(){d('extend',function(a,b){for(var c in b){a[c]=b[c]}return a});g('merge','extend');d('clone',function(a){return this.extend({},a)});d('each',function(a,b,c){for(var e in a){if(a.hasOwnProperty(e)){b.call(c,e,a[e])}}})});i(RegExp,function(){d(this,'escape',function(a){return String(a).replace(/([.*+?^=!:${}()|[\]\/\\])/g,'\\$1')})});i(String,function(){d('endsWith',function(a){var b=this.length-a.length;return b>=0&&this.indexOf(a,b)===b});d('include',function(a){return this.indexOf(a)>-1});g('contains','include');d('isBlank',function(){return/^\s*$/.test(this)});d('isEmpty',function(){return this==''});d('startsWith',function(a){return this.lastIndexOf(a,0)===0});d('strip',function(){return this.replace(/^\s+/,'').replace(/\s+$/,'')});d('camelize',function(){return this.replace(/[-_]+(.)?/g,function(a,b){return b?b.toUpperCase():''})});d('capitalize',function(){return this.charAt(0).toUpperCase()+this.substring(1)});d('dasherize',function(){return this.replace(/([A-Z]+)([A-Z][a-z])/g,'$1-$2').replace(/([a-z\d])([A-Z])/g,'$1-$2').replace(/_/g,'-').toLowerCase()});d('humanize',function(){return this.replace(/[_|-]+/g,' ').capitalize()});d('titleize',function(){return this.underscore().humanize().replace(/\b('?[a-z])/g,function(a,b){return b.capitalize()})});g('toTitleCase','titleize');d('underscore',function(){return this.replace(/([A-Z]+)([A-Z][a-z])/g,'$1_$2').replace(/([a-z\d])([A-Z])/g,'$1_$2').replace(/-/g,'_').toLowerCase()})})})();
\ No newline at end of file
+(function(){var l='undefined',h=this,d=h.def,i=h.classify,n=h.module,o=h.include,p=h.extend,g=h.alias,m=Array.prototype.slice,j=h.$break={};n('Enumerable',function(){var k=function(a){return a};d('each',function(b,c){var e=0;try{this.__each__(function(a){b.call(c,a,e++)})}catch(error){if(error!=j){throw error;}}return this});d('all',function(c,e){c=c||k;var f=true;this.each(function(a,b){f=f&&!!c.call(e,a,b);if(!f){throw j;}});return f});g('every','all');d('any',function(c,e){c=c||k;var f=false;this.each(function(a,b){if(f=!!c.call(e,a,b)){throw j;}});return f});g('some','any');d('collect',function(e,f){e=e||k;return this.inject([],function(a,b,c){a.push(e.call(f,b,c));return a})});g('map','collect');d('detect',function(c,e){var f=null;this.each(function(a,b){if(c.call(e,a,b)){f=a;throw j;}});return f});g('find','detect');d('include',function(b){if(typeof this.indexOf==='function'){return this.indexOf(b)!=-1}var c=false;this.each(function(a){if(typeof a.value!==l){a=a.value}if(a==b){c=true;throw j;}});return c});g('contains','include');d('inject',function(c,e,f){this.each(function(a,b){c=e.call(f,c,a,b)});return c});g('reduce','inject');d('invoke',function(b){var c=m.call(arguments,1);return this.map(function(a){return a[b].apply(a,c)})});d('pluck',function(b){return this.map(function(a){return a[b]})});d('reject',function(e,f){return this.inject([],function(a,b,c){if(!e.call(f,b,c)){a.push(b)}return a})});g('not','reject');d('select',function(e,f){return this.inject([],function(a,b,c){if(e.call(f,b,c)){a.push(b)}return a})});g('findAll','select');g('filter','select')});n('Events',function(){d('bind',function(a,b){var c=this.__events__||(this.__events__={}),e=c[a]||(c[a]=[]);e.push(b);return this});d('unbind',function(a,b){var c,e;if(!a){delete this.__events__}else if(c=this.__events__){if(!b){delete c[a]}else if(e=c[a]){for(var f=0,k=e.length;f<k;f++){if(e[f]===b){e.splice(f,1);break}}}}return this});d('trigger',function(b){var c;if(c=this.__events__){var e=arguments,f;if(f=c[b]){f.each(function(a){a.apply(this,m.call(e,1))},this)}if(f=c['all']){f.each(function(a){a.apply(this,e)},this)}}return this})});i(Array,function(){o(Enumerable);d('__each__',function(a){for(var b=0,c=this.length;b<c;b++){a.call(null,this[b])}});d('clear',function(){this.length=0;return this});d('clone',function(){return m.call(this,0)});d('compact',function(){return this.reject(function(a){return a==null})});d('first',function(){return this[0]});d('flatten',function(){return this.inject([],function(a,b){if(b instanceof Array){a=a.concat(b.flatten())}else{a.push(b)}return a})});d('isBlank',function(){return this.compact().length==0});d('isEmpty',function(){return this.length==0});if(typeof Array.prototype.indexOf===l){d('indexOf',function(a,b){for(var c=b||0,e=this.length;c<e;c++){if(this[c]===a){return c}}return-1})}d('last',function(){return this[this.length-1]});if(typeof Array.prototype.lastIndexOf===l){d('lastIndexOf',function(a){var b=this.length;while(b--){if(this[b]===a){return b}}return-1})}d('remove',function(a){var b=this.indexOf(a);if(b!=-1){this.splice(b,1);return a}});d('removeAll',function(a){var b=false;while(typeof this.remove(a)!==l){b=true}if(b)return a});d('removeAt',function(a){if(a>0&&a<this.length){return this.splice(a,1)[0]}});d('uniq',function(e){return this.inject([],function(a,b,c){if(c===0||(e?a.last()!=b:!a.include(b))){a.push(b)}return a})})});i(Function,function(){d('bind',function(a){if(a==null){return this}var b=this;return function(){return b.apply(a,arguments)}})});i(Number,function(){(function(b){b.each(function(a){d(a,function(){return Math[a].apply(null,[this].concat(m.call(arguments)))})})})(['abs','acos','asin','atan','atan2','ceil','cos','exp','floor','log','max','min','pow','round','sin','sqrt','tan'])});p(Object,function(){d('extend',function(a,b){for(var c in b){a[c]=b[c]}return a});g('merge','extend');d('clone',function(a){return this.extend({},a)});d('each',function(a,b,c){for(var e in a){if(a.hasOwnProperty(e)){b.call(c,e,a[e])}}})});i(RegExp,function(){d(this,'escape',function(a){return String(a).replace(/([.*+?^=!:${}()|[\]\/\\])/g,'\\$1')})});i(String,function(){d('endsWith',function(a){var b=this.length-a.length;return b>=0&&this.indexOf(a,b)===b});d('include',function(a){return this.indexOf(a)>-1});g('contains','include');d('isBlank',function(){return/^\s*$/.test(this)});d('isEmpty',function(){return this==''});d('startsWith',function(a){return this.lastIndexOf(a,0)===0});d('strip',function(){return this.replace(/^\s+/,'').replace(/\s+$/,'')});d('camelize',function(){return this.replace(/[-_]+(.)?/g,function(a,b){return b?b.toUpperCase():''})});d('capitalize',function(){return this.charAt(0).toUpperCase()+this.substring(1)});d('dasherize',function(){return this.replace(/([A-Z]+)([A-Z][a-z])/g,'$1-$2').replace(/([a-z\d])([A-Z])/g,'$1-$2').replace(/_/g,'-').toLowerCase()});d('humanize',function(){return this.replace(/[_|-]+/g,' ').capitalize()});d('titleize',function(){return this.underscore().humanize().replace(/\b('?[a-z])/g,function(a,b){return b.capitalize()})});g('toTitleCase','titleize');d('underscore',function(){return this.replace(/([A-Z]+)([A-Z][a-z])/g,'$1_$2').replace(/([a-z\d])([A-Z])/g,'$1_$2').replace(/-/g,'_').toLowerCase()})})})();
\ No newline at end of file
diff --git a/spec/classified/numberSpec.js b/spec/classified/numberSpec.js
index bbdb5a3..36152b5 100755
--- a/spec/classified/numberSpec.js
+++ b/spec/classified/numberSpec.js
@@ -1,25 +1,97 @@
 describe('Number', function() {
   describe('#abs', function() {
-    it('returns the absolute value of a number', function() {
-      expect((-1).abs()).toEqual(1);
+    it('returns the abs of a number', function() {
+      expect((-1).abs()).toEqual(Math.abs(-1));
+    });
+  });
+  
+  describe('#acos', function() {
+    it('returns the acos of a number', function() {
+      expect((-1).acos()).toEqual(Math.acos(-1));
+    });
+  });
+  
+  describe('#asin', function() {
+    it('returns the asin of a number', function() {
+      expect((-1).asin()).toEqual(Math.asin(-1));
+    });
+  });
+  
+  describe('#atan', function() {
+    it('returns the atan of a number', function() {
+      expect((1).atan()).toEqual(Math.atan(1));
+    });
+  });
+  
+  describe('#atan2', function() {
+    it('returns the atan2 of a number', function() {
+      expect((4).atan2(8)).toEqual(Math.atan2(4, 8));
     });
   });
   
   describe('#ceil', function() {
-    it('returns the smallest integer greater than or equal to the number', function() {
-      expect((0.1).ceil()).toEqual(1);
+    it('returns the ceil of a number', function() {
+      expect((0.1).ceil()).toEqual(Math.ceil(0.1));
+    });
+  });
+  
+  describe('#exp', function() {
+    it('returns the exp of a number', function() {
+      expect((5).exp()).toEqual(Math.exp(5));
     });
   });
   
   describe('#floor', function() {
-    it('returns the largest integer less than or equal to the number.r', function() {
-      expect((1.9).floor()).toEqual(1);
+    it('returns the floor of a number', function() {
+      expect((1.9).floor()).toEqual(Math.floor(1.9));
+    });
+  });
+  
+  describe('#log', function() {
+    it('returns the log of a number', function() {
+      expect((5).log()).toEqual(Math.log(5));
+    });
+  });
+  
+  describe('#max', function() {
+    it('returns the max of a number', function() {
+      expect((25).max(10, 15, 0)).toEqual(Math.max(25, 10, 15, 0));
+    });
+  });
+  
+  describe('#min', function() {
+    it('returns the min of a number', function() {
+      expect((5).min(10, 15)).toEqual(Math.min(5, 10, 15));
+    });
+  });
+  
+  describe('#pow', function() {
+    it('returns the pow of a number', function() {
+      expect((5).pow(2)).toEqual(Math.pow(5, 2));
     });
   });
   
   describe('#round', function() {
     it('rounds the number to the nearest integer', function() {
-      expect((0.8).round()).toEqual(1);
+      expect((0.8).round()).toEqual(Math.round(0.8));
+    });
+  });
+  
+  describe('#sin', function() {
+    it('returns the sin of a number', function() {
+      expect((1).sin()).toEqual(Math.sin(1));
+    });
+  });
+  
+  describe('#sqrt', function() {
+    it('returns the sqrt of a number', function() {
+      expect((9).sqrt()).toEqual(Math.sqrt(9));
+    });
+  });
+  
+  describe('#tan', function() {
+    it('returns the tan of a number', function() {
+      expect((1).tan()).toEqual(Math.tan(1));
     });
   });
 });
diff --git a/src/extensions/number.js b/src/extensions/number.js
index ec29225..d8671b7 100755
--- a/src/extensions/number.js
+++ b/src/extensions/number.js
@@ -1,27 +1,10 @@
 classify(Number, function() {
-  // Returns the absolute value of the number. Convenience method that simply
-  // calls `Math.abs` on this instance and returns the result.
-  def('abs', function() {
-    return Math.abs(this);
-  });
-  
-  // Rounds the number to the nearest integer. Convenience method that simply
-  // calls `Math.round` on this instance and returns the result.
-  def('round', function() {
-    return Math.round(this);
-  });
-  
-  // Returns the smallest integer greater than or equal to the number.
-  // Convenience method that simply calls `Math.ceil` on this instance and
-  // returns the result.
-  def('ceil', function() {
-    return Math.ceil(this);
-  });
-  
-  // Returns the largest integer less than or equal to the number.
-  // Convenience method that simply calls `Math.floor` on this instance and
-  // returns the result.
-  def('floor', function() {
-    return Math.floor(this);
-  });
+  // Copy over each Math method into the Number prototype.
+  (function(math) {
+    math.each(function(name) {
+      def(name, function() {
+        return Math[name].apply(null, [ this ].concat(slice.call(arguments)));
+      });
+    });
+  })([ 'abs', 'acos', 'asin', 'atan', 'atan2', 'ceil', 'cos', 'exp', 'floor', 'log', 'max', 'min', 'pow', 'round', 'sin', 'sqrt', 'tan' ]);
 });