Enjoy a FREE sample of the series "Trading Cards". The complete series contains 40 cards with different levels of difficulty. This activity can be used as a quick formative assessment, to build fluency in math skills needed for future complex tasks and used as part of the mathematical practices. On the one hand, the students will discover patterns and structure throughout the examples (MP.7), on the other, the activity helps students to recognize repeated procedures and shortcuts (MR.8). Check