Rules:
1. Calculate from left to right
2. Just type the absolute value, its converted to negative if needed automatically
3. Round down to the nearest whole number, there are no decimals.
4. A correct answer leads to the next question automatically

This app is not intended to learn calculating fast in your head, but to help you train your already learned fast math skills and reach even higher Speeds. An example for a use case of this app is a participant in a math contest. This app lets you calculate a lot of problems right afteranother and enables you to track your progress via a Highscore system.