开心24 app for iPhone and iPad
4.2 (
6992 ratings )
Entertainment
Education
Developer: Chengdu WangDianTong Tech. Services Co.,Ltd
Free
Current version: 2.6, last update: 1 year agoFirst release : 30 Sep 2020
App size: 16.44 Mb
Happy24 will randomly give 4 numbers, and the user will form a formula by adding, subtracting, multiplying and dividing to make the result equal to 24; using mental arithmetic to exercise the users mental arithmetic ability and develop intelligence, you can try in fragmented time.