diff --git a/calculator.py b/calculator.py
index 90f5426..f5e9378 100644
--- a/calculator.py
+++ b/calculator.py
@@ -28,4 +28,10 @@ def mod(a, b):
 
 if __name__ == "__main__":
     # 간단한 테스트 코드
-    pass
\ No newline at end of file
+    print("Add: ", add(5, 3))
+    print("Subtract: ", subtract(5, 3))
+    print("Multiply: ", multiply(5, 3))
+    print("Divide: ", divide(5, 3))
+    print("Power: ", pow(5, 3))
+    print("Absolute: ", abs(-5))
+    print("Modulus: ", mod(5, 3))
\ No newline at end of file