This activity contains a variety of rational number operation problems (adding, subtracting, converting between the fraction and decimal form of a number) for students to solve. There are two columns of problems. The problems that are next to one another (left to right) have the same solution. This activity helps the students work independently, while still receiving feedback on their work, as they make sure the answers next to one another match. This also helps students continually think about different ways to write the same number.