Set of 12. This bag comes filled with maths problems! Included are six maths dice made of FSC® 100%-certified wood with which countless combinations of maths problems can be rolled - from simple addition and subtraction to more complicated maths problems (e.g. multiplication). All maths problems appear randomly so that the arithmetic stays exciting! By adding or leaving out dice, each player can choose how difficult their maths problem should be. This 12-piece display set is a part of the "Educate" product group, and belongs in every learning toy assortment and on every sales counter. It's an ideal last-minute purchase for maths fans or as a small gift for the schoolbag.