Book (Practical) Mathematics How to Draw Witness Lines to Solve Difficult Problems! Revised Rules for Arithmetic Work for Junior High School Entrance Exams
※Please note that product information is not in full comprehensive meaning because of the machine translation.
Japanese title: 単行本(実用) 数学 補助線の引き方で難問がスイスイ解ける! ! 中学受験算数 作業のルール 全面改訂版