The Basic Numbers application serves to practice basic mathematical operations +, -, * and /. You can set the range of values for the individual members of the example, the total result, but also the partial calculations. It is suitable for the first class of elementary school. For advanced users, there is the option of choosing the number of members, decimal places and control condition that the generated example must meet, thanks to which you can set virtually any typical set of tasks. The examples are divided into pages and each page is gradually evaluated by the stars in three steps. The final total percentage result is there too. Detailed analysis of each test can be stored and rechecked later. Teachers can prepare online test with unique codes for a students and they can send back their results to the teacher.