This is a game I played with my fifth graders after learning how to convert fractions to decimals.
Print the cards on cardstock or construction paper and cut out. (Laminate the construction paper if you use that.) You'll need one set for every two people in your class. To play, have the kids set up like Memory (all cards facing down). To get a match, they have to match the equivalent decimals and fractions. I always had them do the division for the fraction to prove they were equal.
*Helpful Hint: If you use a different color sheet for each set of cards and one card gets separated from the set, you'll know which set it belongs with. :)