diff --git a/num2words/lang_IT.py b/num2words/lang_IT.py
index e4c9273..3b223c3 100644
--- a/num2words/lang_IT.py
+++ b/num2words/lang_IT.py
@@ -169,7 +169,7 @@ class Num2Word_IT:
     def to_cardinal(self, number):
         if number < 0:
             string = Num2Word_IT.MINUS_PREFIX_WORD + self.to_cardinal(-number)
-        elif number % 1 != 0:
+        elif isinstance(number, float):
             string = self.float_to_words(number)
         elif number < 20:
             string = CARDINAL_WORDS[number]
diff --git a/tests/test_it.py b/tests/test_it.py
index a94f63f..d358bac 100644
--- a/tests/test_it.py
+++ b/tests/test_it.py
@@ -22,7 +22,6 @@ from num2words import num2words
 
 
 class Num2WordsITTest(TestCase):
-
     maxDiff = None
 
     def test_negative(self):
@@ -225,3 +224,11 @@ class Num2WordsITTest(TestCase):
             "novecentouno miliardi, duecentotrentaquattro milioni e "
             "cinquecentosessantasettemilaottocentonovantesimo"
         )
+
+    def test_with_decimals(self):
+        self.assertAlmostEqual(
+            num2words(1.0, lang="it"), "uno virgola zero"
+        )
+        self.assertAlmostEqual(
+            num2words(1.1, lang="it"), "uno virgola uno"
+        )