ISBN 10: 7111560310 ISBN 13: 9787111560319
Seller: liu xing, Nanjing JiangSu, JS, China
paperback. Condition: New. Language:Chinese.Paperback. Pub Date: 2017-04-01 Pages: $number Publisher: Machinery Industry Publishing House in order to further improve the math ability and achievement of primary school students. we have revised the series. and realized the synchronization with the teaching materials. and the actual progress of teachers. In sync with students ' knowledge ability. The book is divided into four parts: synchronous class Four calculation exercises. stage four test .