There are no written answers, but there are some marks made with a pen and some faint notes. The notes have been erased with an eraser. Purchased for the March 2025 entrance exams. This is a science problem and explanation book for third-year junior high school students. Purchased at a cram school. This is a textbook exclusively sold at cram schools and not available in stores. The name has been erased with an eraser before shipping. Please note that this is a personal inspection, and I apologize if there are any oversights other than those mentioned. Winning Science Workbook Entrance Exam Preparation, Grade 3, Cram School Textbook Other subjects are also on sale.