Make and match different calculation with this fun matchmatics advanced gamegreat for developing children039s mental calculation strategies and instant recall of multiplication division addition and subtraction factscontains 80 equation tiles and 40 tiles with an sign each tile can be matched with other tiles where the answer to each equation is the same eg 90 ampdivide 10 1 x 9this advanced set uses the four operations at a challenging levelage 8 and above