Solving simple arithmetic problems and reading out loud are the best exercises for the brain, according to the latest research. PlusOrMinus is a mathematical game and a good puzzle for your brain, in which you can consolidate knowledge of arithmetic and practice your counting speed. In this interesting game, random numbers (random numbers) are generated that must be calculated depending on the sign, plus or minus. If you want to improve creativity, memory, communication skills and thought processes, then you need this game. This application is designed to help you "rejuvenate" your brain and develop all its functions to the maximum. Not a few important discoveries were made: in order to activate as many areas of the brain as possible, it is necessary to solve simple arithmetic examples for a while. To do this, an application has been developed that will help you get rid of forgetfulness, the difficulty of memorizing names, spelling words or expressing your own thoughts. Math puzzles are suitable for both adults and children, schoolchildren, pupils of primary, middle and high school, students. The game has 3 levels of difficulty: Lite, medium and hard. A mathematical game contains a large number of levels, puzzles in numerical form, 2 types of arithmetic operations: addition, subtraction, you can also compete with other players by increasing your records.