價格：免費
更新日期：2016-10-05
檔案大小：50.6 MB
目前版本：1.1
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
A quick and fun way to learn and practice adding, subtracting and multiplying negative numbers. Race against the clock to answer the questions as quickly as possible. Enjoyable and useful for anyone. Multiple game modes - practice for people of different ability levels. Leaderboard - beat your time until you're a master.
支援平台：iPhone, iPad