My Mental Arithmetic Lite for Android – Latest Version & Features

The application was designed for my kid to train the ability of mental arithmetic in 2-4 elementary school classes.
Sure adults could have a try to train their brains as well.
I am sure you will be astonished comparing your first results and results you gain after one month of training.The following features are included into this application:- summarize up to 50 (or 1000 full version)- subtraction up to 50 (or 1000 full version)- multiplication up to 10 (or 20 full version)- dividing up to 10 (or 20 full version)- dividing with a rest (full version only)- combination of these samples in one exercise (full version only)- shuffle the unknown value place (full version only), e.g.
the first summand is unknown: ???
+ 2 = 5I hope you will enjoy trying the "Lite" version.Any feedback to improve the usability, quality and features is welcome.