My Mental Arithmetic

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 1000
- subtraction up to 1000
- multiplication up to x100
- dividing up to /100
- dividing with a rest
- mixed samples: 2x3-4÷2; 4x(2+3); (3+7)-(2+3)
- combination of these samples in one exercise
- shuffle the unknown value place, e.g. the first summand is unknown: ??? + 2 = 5
- weight, dimension and time units

I hope you will enjoy using the App.
Any feedback to improve the usability, quality and features is welcome!