Mabuchi Kyōshitsu (Mabuchi Classroom) Thorough Foundation & Mastery: Arithmetic 2021 Edition 5th Grade - Mastery Level Exercises Sessions 2-37 Only the first one and a half pages have writing, with corrections made in red pen, but the pencil markings have been erased. The name has been erased with correction tape. There are some folded corners and cut-out sections, but most of the book is blank, so I think you can still use it. For those who understand that this is a home-stored item, thank you very much!