Have the students match the problem on one end of the domino with the answer on the end of the another. This will lead them to the next problem to solve!
Print out the set of dominoes (preferably on card stock so it is more durable). I would recommend printing out two sheets, one to cut apart and one to keep as an answer sheet. Separate the two sets of dominoes by cutting up the middle of the page through the thick dividing line. Then cut out the individual dominoes along the dotted line.