Again, there are some variances in terms of the number of test questions depending on who your provider is, but the Prometric written test is typically 90 minutes to answer 60 questions, while Pearson Vue is 70 questions and Headmaster has 75 questions. The second part of the test, the CNA skills test, will also vary in terms of the time required to demonstrate your skills. Pearson Vue requires five skills in 25 minutes. Prometric and Headmaster require five skills in under 40 minutes.