Two fractions and one operation between them. Multiplying, anything on top may cancel with anything underneath; dividing, the second fraction turns over first. These free printable worksheets drill both.
If they get stuck
The answer key prints on a separate page.
The move that is new here is canceling ACROSS. In a single fraction a bracket can only cancel with the one under it; the moment two fractions are multiplied they become one, and the bracket on top of the first cancels with the bracket under the second. Seeing that the two fractions are no longer separate is the whole lesson.
Dividing adds one step before any of that: turn the second fraction over and change the ÷ to a ×. It has to happen first. Canceling across a division sign is not a move, and a child who does it will sometimes still land on the right answer — which is why the order is worth saying out loud rather than leaving the marks to teach it.
One question from a sheet like this one, worked a step at a time — with a sentence saying what just happened and why.
Multiplying and dividing rational expressions, step by step