A calculation drill that allows you to study with a large sheet, increasing the number of problems and making it easy to review. - Title: Calculation Giga Drill Grade 4 - Publisher: Bun'eido - Content: You can study with a large sheet that increases the number of problems and makes it easy to review. Thank you for viewing. Please refrain from purchasing if you are nervous, as this item is stored at home. If you are looking for perfection, cannot tolerate even the slightest oversight, or demand confirmation of every single page for tears or stains, please refrain from purchasing. m(_ _)m Please check the condition in the photos.