This is the "Original Text" from Mori no Mi Publishing, a textbook specifically for cram schools. It's a well-regarded textbook for solidifying the basics. As it's a collection of basic-level problems, I think it's suitable for home study. I only used it by copying parts, so there are no markings. I am currently selling the Original Text for grades 3-6. I also have other "Elementary School Textbooks" for sale. #hiroko_elementaryschooltextbooks (← Link to the sales page) I also sell "Junior High School Textbooks," "University Entrance Exam Textbooks," "Mathematics for University," and "Dictionaries." Please understand that these items are stored by a private individual, so there may be minor scratches or stains from storage. This is a math problem book, the latest edition of the Original Text. - Title: Original Text Math Elementary School 5th Grade Latest Edition - Number of pages: 99 pages - Contents: Math problem book Thank you for looking.