Is it unethical to give students a sample math test as a study guide?
I give a mock exam that gives example questions from the topics that are covered in the exam but not the actual questions themselves.

This enables specific words or formats etc to be used in the mock so that one is sure that the students cannot say that they have not been covered...

Edit based on my comment:

For the nine topics covered, there are 15 or so practice questions which are part of the "coursework" for each topic, so there is plenty of practice. The exam questions are based on any of those questions, with a different story, different numbers or part A is the same but part B is then different etc