diff --git a/lib/puppet/parser/functions/is_float.rb b/lib/puppet/parser/functions/is_float.rb
index 2fc05ba..911f3c2 100644
--- a/lib/puppet/parser/functions/is_float.rb
+++ b/lib/puppet/parser/functions/is_float.rb
@@ -15,7 +15,7 @@ Returns true if the variable passed to this function is a float.
 
     value = arguments[0]
 
-    if value != value.to_f.to_s then
+    if value != value.to_f.to_s and !value.is_a? Float then
       return false
     else
       return true
diff --git a/lib/puppet/parser/functions/is_integer.rb b/lib/puppet/parser/functions/is_integer.rb
index 8ee34f6..6b29e98 100644
--- a/lib/puppet/parser/functions/is_integer.rb
+++ b/lib/puppet/parser/functions/is_integer.rb
@@ -15,7 +15,7 @@ Returns true if the variable returned to this string is an integer.
 
     value = arguments[0]
 
-    if value != value.to_i.to_s then
+    if value != value.to_i.to_s and !value.is_a? Fixnum then
       return false
     else
       return true
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_float_spec.rb b/spec/unit/puppet/parser/functions/is_float_spec.rb
index 2f527d9..b7d73b0 100644
--- a/spec/unit/puppet/parser/functions/is_float_spec.rb
+++ b/spec/unit/puppet/parser/functions/is_float_spec.rb
@@ -26,4 +26,8 @@ describe "the is_float function" do
     result = scope.function_is_float(["3"])
     result.should(eq(false))
   end
+  it "should return true if a float is created from an arithmetical operation" do
+    result = scope.function_is_float([3.2*2])
+    result.should(eq(true))
+  end
 end
diff --git a/spec/unit/puppet/parser/functions/is_integer_spec.rb b/spec/unit/puppet/parser/functions/is_integer_spec.rb
index 5afbba4..4335795 100644
--- a/spec/unit/puppet/parser/functions/is_integer_spec.rb
+++ b/spec/unit/puppet/parser/functions/is_integer_spec.rb
@@ -26,4 +26,9 @@ describe "the is_integer function" do
     result = scope.function_is_integer(["asdf"])
     result.should(eq(false))
   end
+
+  it "should return true if an integer is created from an arithmetical operation" do
+    result = scope.function_is_integer([3*2])
+    result.should(eq(true))
+  end
 end
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))