1. four students volunteer at the hospital. casey volunteers 20.7 hours, danielle, 20 3/4 hours, javier 18 9/10 hours, and forrest, 20 18/25 hours. who volonuteered the greatest number of hours? 2. directions for making a quilt say to cut fifteen squares with sides that are 3.625 inches long. what is the side length written as a fraction? 3. cam has a piece of plywood that is 6 7/8 feet wide. he is going to cut shelves from the plywood that are each 1 1/6 feet wide. which is a good estimate for the number of shelves cam can make? 4. zach has 3/4 hour to play video games. it takes him 1/12 hour to set up the system. each round of his favorite game takes 1/6 hour. how many rounds can he play?