The present invention relates to a method for gathering a number of articles with a target total weight, the method comprising supplying articles to a plurality of weighing units in order to obtain measured weight values in articles, performing combinatorial calculations on the basis of the measured weight values to select a combination of these measured weight values the sum of which coincides with the target weight; and gathering the articles of the weighing units the measured weight values of which are part of the combination, wherein the weighing units are conveyor elements that are movable by levitation with respect to a work surface, capable of following different trajectories between at least two areas of the work surface of which one is a loading area, in which the articles are supplied to the weighing units; and another is an unloading area, in which the weighing units that are part of the combination dump their content to at least one article collector.