What the fuck!?
Hadron you truly are a top class moron.
"Arithmetic or arithmetics (from the Greek word αριθμός = number) is the oldest and most elementary branch of mathematics, used by almost everyone, for tasks ranging from simple daily counting to advanced science and business calculations."
Courtesy of Wikipedia.
"A branch of mathematics usually concerned with the four operations (adding, subtracting, multiplication and division) of positive numbers."
Courtesy math.about.com
"The ability to correctly manipulate numeric information according to basic mathematical rules including division, subtraction, multiplication or addition."
Courtesy brainrehab.org
"A branch of mathematics that involves combining numbers by addition, subtraction, multiplication and division."
Courtesy sssoftware.com/
Go back to school.