本书通过故事的形式介绍各种神奇有效的速算方法，跟随书中的人物体味速算的乐趣。
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本书通过故事的形式介绍各种神奇有效的速算方法，跟随书中的人物体味速算的乐趣。
Author(s): 刘后一
Publisher: 中国少年儿童出版社
Year: 2010
Language: Chinese
Commentary: decrypted from AC0014368A164607660CD040FED496C1 source file
Pages: 180
City: 北京