My students always forget which operations follow which processes with fractions! When multiplying, too many students try to find a common denominator! I made this quick chart for my 5th graders, but wish I had created such a thing when I used to teach 8th graders! Give this to students as a reference sheet. They can even add an example of each type of problem onto the sheet for extra practice/review.
Message me if you'd like a slightly different version depending on your students (e.g. examples included, no borrowing, etc.)