A reference book explaining math techniques useful for junior high school entrance exams. - Title: Junior High School Entrance Exam Math: Lightning-Fast Techniques for Quick Solutions - Publisher: Jitsumu Kyoiku Shuppan - Target Audience: Junior High School Entrance Exam Candidates - Formulas: 34 - Rules: 18 - Features: Helps overcome time constraints - Content: 10 numbers that are advantageous to memorize - Number of Problems: Many solutions - Price: Regular price 1800 yen Thank you for viewing. I purchased this on Mercari, but I barely used it, and it has been sitting unused. Please note that it is not new.