1, the difficulty of the topic: the Shanghai college entrance examination mathematics paper pays more attention to examining students' mathematical reasoning and problem-solving ability, so the difficulty of the topic is relatively high. The national volume pays more attention to the examination of basic knowledge, and the difficulty of the topic is relatively low.

2. Question type setting: Shanghai college entrance examination mathematics papers pay more attention to application problems and multi-step problem solving, involving more complex mathematical concepts and methods. The national paper pays more attention to basic questions and involves simple mathematical knowledge.

3. The number of questions and time allocation: There are many questions in the math test paper of Shanghai college entrance examination, which requires students to answer quickly within a limited time. There are relatively few topics in the national paper, which gives students more time to think and answer.