This is a workbook for 5th graders for arithmetic. - Title: Arithmetic Workbook 5th Grade, Volume 1 - Series: Yosyu Series (Preparation Series) - Publisher: Yotsuya Otsuka Thank you for looking. I received this, but I have a duplicate, so I am selling it. I quickly checked it, and there were no markings. There may be oversights, but please understand.