Trend® Skill Drill Flash Cards. Division 0-12 flash cards are great for mastering division to build a solid math foundation, prepare for higher-level concepts, and boost student confidence and learning success. Practice math skills with 91 self-checking division cards that are large enough for the whole classroom of students. Cards include an equation on one end and a solution on the other. Activity ideas are included to keep kids engaged and challenged in classrooms, homeschools, and more. 91 flash cards included, 3" x 6" each.