Anzan19x19 app for iPhone and iPad

4.8 ( 2448 ratings )

Education Entertainment
Developer: Hajime Hotaka

Free

Current version: 1.2.7, last update: 6 months ago
First 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.