Anzan19x19 app for iPhone and iPad

4.6 ( 2656 ratings )

Education Entertainment
Developer: Hajime Hotaka

Free

Current version: 1.4.0, last update: 2 months ago
First release : 16 Jan 2020
App size: 36.57 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.