Speed Math - Mental Math Trainer is a fun game that allows you to learn mental math with many different exercises. All these are based on addition, subtraction, multiplication, and division.

The main goal of this app is to help you improve your mental calculation skills. There are two modes to play with: Endless and Levels. In the latter, you will play with a series of math problems that will get more challenging and complex as you progress. In the former, the problems will always be at your level.

This app is a fun game that is intended for educational purposes. To ensure that the math problems are at your level, you can choose to start with easy exercises and then work your way up.

It is also a good idea to look at the examples in the app as they will help you understand the problems better.