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Mathematical standard training book
I've used it, and my math score is only about 80 points, [full score 100, junior high school, 20 students with over 80 points in the whole grade,1* *100], but I scored a few points, and the effect is not bad after using this medium-sized one. Especially in calculation, I worked on it while doing it, and I did all the difficult problems, hoping to improve it in the medium term.