diff --git a/source/2/2.4/2.4.3/Kcalc.rst b/source/2/2.4/2.4.3/Kcalc.rst
index 38ad5e6b..efa2a389 100644
--- a/source/2/2.4/2.4.3/Kcalc.rst
+++ b/source/2/2.4/2.4.3/Kcalc.rst
@@ -13,7 +13,10 @@ Features:
 
 Useage
 ------
-To do simple arithmetic click the numbers and then press the sign for addition, multiplication, subtraction,  or division. You can also type in the numbers and press + for addition, - for subtraction, * for multiplication and / for division. To view the answer press the button that is an =.
+To do simple arithmetic click the numbers and then press the sign for addition, multiplication, subtraction,  or division. You can also type in the numbers and press + for addition, - for subtraction, * for multiplication and / for division. To view the answer press the button that is an =. 
+
+To make a number negative press the button that looks like a +/-. To insert decimals press the decimal point button which looks like . when you get to the part which is less than a whole number. To clear input from Kcalc Press the button with a C on it.   
+
 
 Screenshot
 ----------