I developed this assignment with the help of my students. Students decide to run their own business to make money. The assignment involves key concepts of percent mark up, mark down, adding rational numbers, converting percents to decimals and much more. This assignment engages my students and involves critical real world thinking. The assignment can be pushed out through a medium such as Google Classroom or printed and given as a written exam. The document can be easily tweaked to fit your students interests. Document comes with key .