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What is the thickness of the math book?
The thickness of the book is about 0.8 cm.

The compilation of mathematics textbooks should be based on the mathematics syllabus. Textbook writers can determine the knowledge content system, design the overall scheme including learning knowledge, training skills, developing ability and cultivating attitude, and choose a textbook writing method on the premise of reflecting their teaching purpose and content and meeting their teaching requirements, according to their own needs and their own opinions and experiences.