Mathematical competence and digital competence are key competences, necessary for every person for harmonious inclusion in society and quality professional insertion. The first is a decisive factor for the development of digital competence, contributing to its consolidation through the formation of essential cognitive and metacognitive skills for the effective and responsible use of digital technologies. It facilitates communication and collaboration in digital environments because it allows the use of common representations and symbols to express ideas, data or information. At the same time, digital literacy stimulates the learning and development of mathematical competence by providing varied and attractive tools, resources, methods and contexts for students and teachers. The article presents an analysis of the interactions between the mentioned competencies and highlights the benefits of this interaction not only for the actors of the educational system, but also for any other people.