Here is a set of two worksheets where the kids have to order fractions with unlike denominators from least to greatest. This concept was really hard for my kids so I created a graphic organizers to help them organize their multiples, LCM and equivalent fractions.
Along with the two worksheets I have included a larger version of the organizer that I used to project on the board and I also had the kids use them in reusable dry erase pockets. If you do not have the pockets you could also laminate them to be reused.
Answer key is included.