價格：免費
更新日期：2016-04-03
檔案大小：12M
目前版本：1.0
版本需求：Android 2.3 以上版本
官方網站：mailto:rolesak@gmail.com
Learning and practicing subtraction has never been more fun! Interactive game designed to practice solving subtraction problems. There are 3 difficulty levels designed for children 4 and up.
There are no penalties for wrong answers and your child can play as long as he/she wants. The intention is to practice various math problems at different difficulty levels to improve your math skills involving subtraction.
This game is designed to be lightweight with no ads or in-app purchases.