First, two major problems in introducing GMAT mathematics
There are two main types of multiple-choice questions in GMAT math problems-problem solving (PS) and data adequacy judgment (DS). The math part of GMAT mainly tests candidates' abilities of mathematical reasoning, solving mathematical problems and interpreting graphic data. Problem solving and data adequacy judgment require knowledge of arithmetic, basic algebra and common geometric concepts.
The arithmetic part is mainly the content of junior high school mathematics, and some questions involve set, probability and descriptive statistics. Among them, the nature, percentage, ratio and proportion of integers, descriptive statistics and probability are the contents that candidates need to review. In particular, the probability solution of permutation and combination is still a difficult and frequent part in the examination in recent years, and candidates need to pay special attention. Generally speaking, the algebra part does not exceed the content of the math book of Grade One, while the geometry part mainly examines the examinee's understanding of geometric dimensions, requiring the examinee to have the ability to conceive geometric figures and their relationship with numbers. The GMAT math test does not require the proof of a large number of theorems and a proposition in geometry class.
Second, the introduction of PS problem to solve the problem
"Problem solving" aims to test your math skills, your ability to understand basic math concepts and your ability to infer and solve math problems. PS test is not the transformation of thinking, but the mastery and application proficiency of basic knowledge.
The purpose of PS test is seriousness. Don't panic when you encounter a long problem. The longer the problem, the more careful it is. Candidates should learn to list the conditions clearly with various images. GMAT mathematics is very rigorous mathematics, and candidates must find the most accurate answer when doing problems, not approximate values. And if the question does not require an approximation, then the answer is a fixed value, so we must firmly believe this. In addition, when doing the questions, candidates should calculate more on grass paper and less attentively, so as to minimize mistakes and ensure that they will not miss full marks because of small mistakes.
Thirdly, introduce DS data adequacy judgment.
"Data adequacy judgment" tests the ability of candidates to analyze mathematical problems, identify relevant information and judge the adequacy of information needed for solving problems. Each "data adequacy judgment" question contains some preliminary information and two statements. These two statements are labeled as (1) and (2) respectively. Candidates must judge whether the data given in the sentence is enough to answer the proposition. And you must choose one of the following options, such as:
A. the statement (1) itself is enough, but the statement (2) is not enough.
B statement (2) is enough, but statement (1) is not enough.
C. the two statements together are enough, but neither statement is enough.
D. each sentence itself is enough.
E. The statements (1) and (2) together are not enough.
Candidates must see clearly what the final requirement of the topic is, and then make a choice, whether it is a ratio or a specific value. Don't decide the conditions 1 and 2 only by your own impression. Be sure to write down the calculation yourself, but don't ask for the result, just ask for a clear process. It is very important to really count. Some DS questions will give you many hints in the conditions and make you think of many unexpected points. But remember, condition 1 and condition 2 are irrelevant to anyone, unless you choose C and just look at condition 2, you must forget condition 1.
Preparation scheme for beginners of GMAT mathematics exam
(1) If many professional words are not understood and it is difficult to read the questions, you may wish to recite the gmat math review vocabulary. When reading, focus on the introduction of knowledge points, not just doing exercises. Because the foundation is poor, you have to make up the foundation first. Good English foundation, poor math. In view of your weak knowledge points, take a closer look at the corresponding chapters in Manhattan mathematics.
(2) gmat mathematics focuses on mastering. When doing gmat exam exercises, gmat beginners can first classify the topics according to the types of questions. Let me give you an example: "1, divisible, remainder/number, factor, square number." 2, Wayne diagram, 3, mean/median 4, product possibility, 5, combination, probability, 6, triangle correlation, 7, rectangle 8, cylindrical water problem 9, rectangular coordinate system correlation 10, others "are definitely not comprehensive. You can determine the type when classifying. After the classification is completed, find the relevant knowledge points of various questions, and then copy them all under the heading of the corresponding category. This is a very time-consuming job. If your math is really a headache, spend some time on it. Completing this task means that you have a very complete information book of your own. It is often more effective to focus on breaking through certain types of questions, because there are many variants of questions, and it often takes repeated practice to be familiar with and master them. Since you dare not expect full marks, try to win as much as possible.