diff --git a/1.py b/1.py
new file mode 100644
index 0000000..7324ea9
--- /dev/null
+++ b/1.py
@@ -0,0 +1,18 @@
+a = float(input())
+operation = input("Операция (+, -, *, /): ")
+b = float(input())
+
+if operation == "+":
+    print(a+b)
+
+elif operation == "*":
+    print(a*b)
+
+elif operation == "-":
+    print(a-b)
+
+elif operation == "/":
+    print(a/b)
+
+else:
+    print("Ошибка")
\ No newline at end of file