I originally made these cards to go with some Connect Four games. However, you could easily give these to students to use as flashcards for extra practice. Or, if you purchased the game board I'm selling, you could use these cards to play it.
I've found my students really like these kinds of cards because they get immediate feedback. Most of them create a pile of correct cards and a pile of wrong cards to go back to. They often boast of how many cards they have correct.
There are 2 sheets of 12 proportion word problems each and 1 page of 12 proportions to solve. The answers are given to print on the back of the cards.