Resum:
The Fundamental Mathematical Knowledge Test is an assessment instrument developed by a team led by the Autonomous University of Barcelona (UAB) for the initial assessment of the mathematical knowledge of students entering the Primary Education Degree at the UAB. The instrument was constructed in parallel to a first definition of Fundamental Mathematical Knowledge within the framework of the research project "Study for the Diagnostic Assessment of the Mathematical Competences of Students Taking the Primary Education Degree" (2014 ARMIF-0041). For a first definition of FMK, see Castro et al. (2014,), and for more details about the process of development of the instrument, see Gorgorió, Albarracín and Villarreal (2017) and Gorgorió and Albarracín (2020).