"Z-Kai Grade Up Problem Collection Elementary School 4th Grade Math Calculation/Figures" Price: 800 yen Edited by Z-Kai Editorial Department No obi #Entertainment/Hobby #Language/Reference Books "Z-Kai Grade Up Problem Collection Elementary School 5th Grade Math Word Problems" Price: 900 yen Edited by Z-Kai Editorial Department #Entertainment/Hobby #Language/Reference Books Unused, but please refrain from purchasing if you are nervous about home storage. Please note that we will ship it as is in a delivery bag!