Is it difficult to take the math graduation exam in compulsory primary schools?
Not difficult. Too much basic knowledge, accounting for 70%, moderate difficulty 20%. About 10% of the problems belong to the fun category. The Olympic Games questions you mentioned account for 2% of the general exam. The share of small classes may reach 10%. The Olympic Games is not difficult, mainly because the method of solving problems is not the same as usual. You can find some Olympic math tutorials to study, ranging from 5-20%.