Enterprise learning is a pedagogic concept that implies that the students, in correlation with development of theoretical, subject specific knowledge, also develops enterprise competences that will be useful in their everyday life and on the labour market. Enterprise learning has grown over the last ten years, as well in school practicing as within research. In the mathematics subject, a strong educational tradition has delayed the introduction of enterprise learning. At the examined school, enterprise mathematics has been introduced during the spring term of 2010. This examination focuses on which of the enterprise competences that are developed and how they are developed. It also investigates whether the desire to learn is increased as a result of the new pedagogic concept. The empiric material has been gathered through interviews with students and teachers, as well as through observation. The result shows unambiguously that the students, above all develops responsibility, but also other enterprise competences. Students that experience mathematics as either easy or difficult are the ones who seem to appreciate these changes mostly in their learning processes.