心算的秘密 － 好玩加法和减法 app for iPhone and iPad
4.0 (
4480 ratings )
Entertainment
Developer: Zhou Qianghua
Free
Current version: 1.3, last update: 8 years agoFirst release : 04 Jul 2016
App size: 8.93 Mb
Learn some mental arithmetic skill, mathematics or genius. Practice makes perfect, let us enjoy mental pleasures, exercise your brain