This game is a training practice or test the addition that more difficult than adding the basic number. In the game you can choose 2 levels, there is a positive number, 2 or 3 position, which is suitable for children of different levels.
Math practice : 3 number addition is a free educational mobile app By Wongchat Kularb-Um.It helps students practice the following standards .
Developer URL: NA
Software Version: 1.1
Release Date: 2017-05-29T18:00:53Z