It is very difficult to achieve excellence in primary schools 100. According to relevant public information, the main content of "Excellent Homework in Primary School 100" will involve the mathematical problems of Olympic Mathematics, which is more difficult than ordinary textbooks, so it is more difficult. "Excellent Homework in Primary School 100" consolidates and upgrades the content learned in the textbook class, covering classroom exercises, unit exercises and mid-term and final papers of each semester.