Of course it works. Mathematics is the most logical subject. But if you want to ask whether it is useful to do middle school math problems, I dare not say, because there are many "ingenious methods" in middle school math problems, which are purely a combination of experience and inspiration. The amount of questions is more important, and the requirements for logical thinking are not high. If you are interested in learning mathematics, you can deliberately train logical thinking. If you just pass the math exam, it is not necessary.