價格：免費
檔案大小：15.5 MB
版本需求：系統需求：iOS 9.0 或以後版本。相容裝置：iPhone、iPad、iPod touch。
支援語言：英語
This is an arithmetic elimination app. The application has three levels: simple, medium and difficult. Please perform simple calculations based on the numbers on the screen and get the correct answer. Our aim is to help users learn simple addition and subtraction arithmetic.
