Yotsuya Otsuka Arithmetic: Summary of the Four Subjects Bonus: Arithmetic for Spring Break Course The "Summary of the Four Subjects" has pencil markings and red pen lines on one page, as shown in the image. About two answer sheets have been used. The cover has a rounded fold. I will try to flatten it with something heavy. The Spring Break Course arithmetic is a bonus. I also received it from someone. There are writings from when I solved the problems, as shown in image 9. The name section is blacked out. I have finished junior high school entrance exams, so I will be listing books related to junior high school entrance exams. Thank you for your understanding regarding used items.