diff --git a/math.py b/math.py
index 8ce432c..d416679 100644
--- a/math.py
+++ b/math.py
@@ -1,4 +1,4 @@
-def addition(a: float, b: float) -> str:  # this does not seem right! why str?
+def addition(a: float, b: float) -> float:  # this does not seem right! why str?
     return a + b
 
 def subtraction(a: float, b: float) -> float: