Maths olympiad training

I had been chosen by the school to enter the Maths Olympiad training. At first I was afraid that I would be learning more difficult maths. But in the end, I found out that we would be learning things about maths example:sums like this 2+2-2x2=4 is wrong. The correct answer is 0. That is because we should always do multiplication and division first. I don't want to be rude, but, I also noticed that the teacher was very strange looking because his eyes seemed to stick together which made him look funny. I can't wait until my next lesson and I hope it will be interesting.