Mathematical calculator for extracting the square root, with detailed calculation. Available in three languages (English, Spanish and Portuguese), with friendly interface and easy to use. Performs detailed calculations. Structure has to perform several calculations simultaneously, and for converting the results into files .Html (HyperText Markup Language) or .rtf (Rich Text Format), both common in various text editors, such as Word. It has its own file system (.c2m_sqr), or allowing file transfer examples, between people. Ideal for study and memorization of the subject (Square Root), as well as for preparation and correction of exercises or examples.