diff --git a/lib/puppet/parser/functions/is_numeric.rb b/lib/puppet/parser/functions/is_numeric.rb
index ce13ece..abf0321 100644
--- a/lib/puppet/parser/functions/is_numeric.rb
+++ b/lib/puppet/parser/functions/is_numeric.rb
@@ -15,7 +15,7 @@ Returns true if the variable passed to this function is a number.
 
     value = arguments[0]
 
-    if value == value.to_f.to_s or value == value.to_i.to_s then
+    if value == value.to_f.to_s or value == value.to_i.to_s or value.is_a? Numeric then
       return true
     else
       return false
diff --git a/spec/unit/puppet/parser/functions/is_numeric_spec.rb b/spec/unit/puppet/parser/functions/is_numeric_spec.rb
index 4078b37..d7440fb 100644
--- a/spec/unit/puppet/parser/functions/is_numeric_spec.rb
+++ b/spec/unit/puppet/parser/functions/is_numeric_spec.rb
@@ -22,6 +22,16 @@ describe "the is_numeric function" do
     result.should(eq(true))
   end
 
+  it "should return true if an integer is created from an arithmetical operation" do
+    result = scope.function_is_numeric([3*2])
+    result.should(eq(true))
+  end
+
+  it "should return true if a float is created from an arithmetical operation" do
+    result = scope.function_is_numeric([3.2*2])
+    result.should(eq(true))
+  end
+
   it "should return false if a string" do
     result = scope.function_is_numeric(["asdf"])
     result.should(eq(false))