Actually, they have Arithmetic - it mentions Hermione taking it in a couple of the books - it just isn't mandatory that the students take it, it's more of an elective than a core subject. There IS math, though.
One of my favorite scenes from the Harry Potter books is when Harry gets sorted into his Hogwarts House by the Sorting Hat. You can feel Harry's extreme relief when he gets placed into Gryffindor! Anything but...
Which Harry Potter Villain Would Be Your Enemy? - Who deserves the biggest curse of all? - Quiz Bellatrix Lestrange Bellatrix is the ultimate servant to Voldemort and her sinsister ways are too much for you to bear. This woman knows no bounds, and even kills an innocent house elf. She must be stopped!
Well... I always have been thinking that I have features from both houses, but I'm emotional and brave enough to chose Gryffindor :D Like Hermione and McGonagall - smart, loving studing, but from Griffindor