Anzan19x19 app for iPhone and iPad
4.8 (
2448 ratings )
Education
Entertainment
Developer: Hajime Hotaka
Free
Current version: 1.2.7, last update: 1 year agoFirst release : 16 Jan 2020
App size: 36.23 Mb
Method of mental calculation of 19x19
Provides a completely new mental method of multiplication from 11 to 19
This method can be understood in a few minutes and can be calculated on the fly.Provides a new mental calculation method of multiplication from 11 to 19.