Do you want to learn to do mental arithmetic, but solving problems is boring for you? Then download MATHEMATICAL TRAINER for the brain and improve your mental skills by solving mathematical equations or practicing multiplication tables with a time limit! Game + practice math + multiplication table in one app! Our Quick Brain app is an educational math learning app that will teach you to count in your head quickly and without mistakes! You will be able to develop abstract and logical thinking, sharpen your intellect, develop patience, improve your IQ, analytical abilities and memory. "Quick Brain" is a math puzzle and riddle game. Mental arithmetic develops attention, concentration, thinking speed, memory, math skills, oral counting, and mental flexibility! You can easily improve your math skills and learn how to quickly perform simple and complex arithmetic operations in your mind with this math simulator with brain exercises. (Mental math: multiplication, division, addition, subtra...