This is a math reference book for junior high school students, with detailed explanations of formulas and solutions. - Title: Understand! Be Able To! Application-Free Arithmetic - Publisher: Gakken - Contents: Detailed explanations of formulas, solutions, and properties - Target Audience: Junior high school students - Price: 2200 yen Thank you for viewing. This item has been stored at home for a long time. There are creases on the cover. *See photos There are no marker checks or writing. (I apologize if I missed anything) For those who understand that this is a used item, thank you.