These cheat sheets are perfect to either print out and laminate as a classroom poster or print as a class set for students to use on assignments or quizzes/tests as you see fit. I print out and laminate the colored versions on cardstock and then put them on a bulletin board labeled 'OMG: Outstanding Math Guide.' I started the year with the multiplication chart and add one each time we get to a new unit. Then, I print a class set of the b&w version and have each student add it to their own personal OMG (a plastic 3-prong folder with sheet protectors in it). Students may use their OMG on quizzes and tests in my class.