Your purchase comes with the document to play Go Fish by decomposing fractions. In this game pairs are pairs of fractions (with the same denominators) that create a whole. For example, 2/7 and 5/7 would be a pair because together they equal 7/7. The document comes with directions for play, and 48 cards with fronts and backs. The cards with the X's are so the cards are not see through if printed 2 sided on computer paper.