This is a set of Algebra Word problem dominoes that contain 14 problems. Each problem is connected to an answer that is found on another dominoe. Every problem has an answer,so once finished the students will form a circle or rectangle using the dominoes. The approximate time for this activity is 50 minutes. As for a key, the problem on the left has the answer of the dominoe underneath it when looking at my product. I always print my dominoes on cardstock so that they last long.