Math Fast Plus and Minus is a free Android educational game developed by GreatBoy Studio. It is a math plus and minus training game suitable for all ages that can be played anywhere and at any time. The game covers elementary level lessons and offers various features to customize the gameplay.

The game allows you to choose difficulty levels and customize game rules. In the easy level, the player has three choices to choose from for the answer, while in the normal level, the player needs to type their own answers. You can select the minimum and maximum numbers, choose to finish the game immediately when the player answers incorrectly, and set the game time in each round. You can also play an endless game.

Math Fast Plus and Minus offers various statistics that you can view and check at any time. You can change the input type to "Left to Right" or "Right to Left," and it has carry and borrow number systems. After the game ends, you can check the answer to see how you made mistakes and improve your math skills.

Overall, Math Fast Plus and Minus is a fun and engaging way to improve math skills for all ages.