價格：免費
檔案大小：233.7 MB
版本需求：需要 iOS 6.0 或以上版本。與 iPhone、iPad 及 iPod touch 相容。
支援語言：英語
Practise the art of Num Fu while mastering basic subtraction facts. Based on ORIGO Education's subtraction strategies, Num Fu allows students to master important number facts while playing fun educational games.
支援平台：iPhone, iPad