Published by Sato Publishing. Contains 15 sets of problems for each grade. Passing the 1st grade of soroban (Japanese abacus) can be advantageous when applying for university scholarships. Grades 2 and below are disregarded. New soroban textbooks may be discounted if combined with other items to save on shipping costs, but due to copyright issues, they will not be sold below the list price. If you are not good at mental addition, please check this out: #Soronyan Soroban Textbooks ← You can see all the soroban textbooks here. Shipping will be via anonymous Nekopos delivery. Please read the profile carefully❗️carefully❗️carefully❗️ and purchase without comment if you have no questions or need to combine items.