diff --git a/moto/dynamodb2/models.py b/moto/dynamodb2/models.py
index a70d6347d..0adbae946 100644
--- a/moto/dynamodb2/models.py
+++ b/moto/dynamodb2/models.py
@@ -56,7 +56,10 @@ class DynamoType(object):
     @property
     def cast_value(self):
         if self.type == 'N':
-            return int(self.value)
+            try:
+                return int(self.value)
+            except ValueError:
+                return float(self.value)
         else:
             return self.value