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GRE数学考试考点回顾

来源:      浏览:      发布日期:2021-06-02 13:39

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2021年从1月到5月,GRE大陆地区一共进行了15场左右考试(不算在家考)。从各路GRE回忆渠道来看。无论verbal reasoning还是quantitative reasoning都覆盖了很多机经原题,这说明考生刷机经题目是很有必要的。

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就数学单科而言,很多考生反馈考试的难度有所上升。我为此去看了一下从1月到5月的回忆考题,得出的结论是:考试的内容没有大变化,但是题目长度在增加。比如下面的这类题目:

1.During archery practice, Kyle made 50 attempts to hit a target. After each attempt, his success rate was calculated as the number of successful attempts to hit the target as a percent of the number of attempts up to that time. After the 20th attempt, his success rate was45 percent. After the4 40th attempt,his success rate was 55 percent. Which of the following statements must be true? Indicate all such statements.

A. Kyle's success rate was less than 45 percent at least once during the practice.

B. Kyle's success rate was between 48 percent and 52 percent at least once during the practice.

C. Kyle's success rate was greater than 55 percent at least once during the practice.

2. The 1, 200 seniors at a certain college, one-quarter live on campus and the rest live off campus. Three-quarters of the seniors at college own car. Which of the following statements must be true?

A. No seniors live on campus and own a car.

B. At least 300 seniors live on campus and own a car.

C. At most 600 seniors live off campus and own a car.

D. At least 600 seniors live off campus and own a car.

E. At least 300 seniors live off campus and do not own a car.

针对这种题目很长的数学考题,一方面建议考生在平时的练习中就要多刷一些长题目,可以做翻译练习(英语题目翻译成中文,再翻译回中文)。此外,在读题的时候需要在草稿纸

上写下相应的条件,有助于厘清思路。比如:

Step 1: the sum of the lengths of the diagonals of X is equal to the sum of the lengths of the diagonals of Y: a+b=c+d

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Step 2: in X, the length of the longer diagonal is 20 more than the length of the shorter diagonal: b=a+20

Step 3: in Y, the length of the longer diagonal is 8 more than the length of the shorter diagonal: d=c+8

Step 4: what is the area of Y minus the area of X: cd/2-ab/2

就考试的重点而言,涉及整数相关考点的题目最多,占了超过1/4,其中考生需要将整数的整除、奇偶性以及幂运算公式记牢。涉及几何类的题目占了约20%,其中最多的是正方

形、圆以及坐标系相关的几何问题,其中有一道题考到了正切,因此考生在几何上除了记忆相关图形的周长、面积以及体积公式之外,还需要将三角函数的基本概念复习一下。此外,

涉及到倍数分数以及差值对比的题目也不少,因此考生需要在平时做题的时候就熟悉一下倍数、分数和差值表达的句型。

总结:GRE数学题目考点范围不变,但是题目长度有所增加或者长题目有所增加。考试重点依然是整数和几何相关的知识点,记得背诵公式!最后,冲击满分的考生可以多练习概率、统计和排列组合的题目,这些题目往往考查了包括整数、几何的基础知识点以及概率、统计和排列组合本身相关的知识点,综合性很高。

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