Hey @Ana2, yep, that’s exactly what we mean - the ones in the “Practice exams” section.
It’s still good to take these sections as you’re going through the quant topics in the textbook. The practice exam sections are generated semi-randomly, and they are weighted similarly to the real exam. For instance, questions on triangles are very common on the real GRE exam - about 1 out of 9 questions are on triangles - and they are this common on our practice exam sections too.
The quant sections of the textbook are in the order of question frequency, i.e. we cover the most common topics first, and the rarest topics last. So even if you are only halfway through the textbook, you will have learned the techniques for most of the questions. And it will still be good to see the questions you haven’t officially learned to get practice overall!