A Business person is a master of tricks and tactics. Skillfully, math is their strongest suit. Business Schools across the globe look forward to welcoming talented students with a knack for numbers. It would be apt to say that, Business schools can be impressed with an impeccable talent of mathematics.
The Quantitative Reasoning section of GMAT helps you showcase this mindful skill of yours to the Universities. You can land in the top Universities across countries with a good score in hand in your Quantitative Reasoning section of GMAT.
This section requires you to mathematically interpret the given data and answer by choosing the appropriate choice. After understanding the problem, apply your logical reasoning skills to solve the problem. Your sense of analysis and problem solving reflects in the way you draw necessary conclusions.
Decoding the GMAT Quantitative Reasoning section:

No. of Quantitative Reasoning questions in GMAT?
Ans. GMAT has 31 questions in the Quant section

How long do you get to solve the Quant section?
Ans. You have a time frame of 62 mins to solve questions from the Quantitative Reasoning section of GMAT

How is GMAT Quantitative Reasoning scored?
Ans. You are scored on a 651 score scale for Quantitative Reasoning
REMEMBER: Quantitative Reasoning is a computer adaptive test. The series of questions and their difficulty levels are based on your ability to answer the given questions.
What should you expect in the Quantitative Reasoning section of GMAT?
In the mathematical section of GMAT, you’re required to analyse problems and draw conclusions. These questions are based on Arithmetic, Algebra, Geometry and Modern Math. You are expected to answer 31 multiple choice questions in 62 minutes. These 31 questions can be either of two types in the GMAT math section, namely:

Problemsolving questions: To solve the mathematics questions

Data sufficiency: Select whether the given information is sufficient to solve the problem or not.
Let’s discuss each of these sections in detail:
1. Problem Solving Questions:
As the name suggests, these are standard problem solving questions. You can expect 1516 problem solving questions from secondary level school mathematics.
It is recommended to time yourself and focus on quicksolving methods while solving these problems. Remember, that the GMAC is only interested in checking  how you logically apply the knowledge you possess, rather than the abundance of your knowledge.
Sample Question:
A company has 15 managers and 75 associates. The 15 managers have an average salary of $120,000. The 75 associates have an average salary of $30,000. What is the average salary for the company?
(A) $35,000
(B) $45,000
(C) $55,000
(D) $65,000
(E) $75,000
Answer: (B)
Using the formula: sum = (average)*(number of salaries)
2. Data Sufficiency:
The GMAT Quantitative section consciously poses data sufficiency questions to put your logical brain cells to test. In a data sufficiency question, you don’t need to solve any complex equation or a problem at all. All you need to do is interpret whether the given information is sufficient to solve the given problem.
Sample Question 1:
Is ‘y’ an integer?

y3 is an integer

3y is an integer
Answer: The two statements together are sufficient
Sample Question 2:
The cost of a certain phone call was $0.75 for the first 3 minutes and $0.20 for each additional minute after the first 3 minutes. Did the phone call last longer than 15 minutes?
(1) The cost of the phone call was less than $4.16
(2) The cost of the phone call was greater than $3.35
A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.
Answer: B
Both of these types of Quantitative aptitude questions in GMAT hail mainly from secondary school mathematics. To ace this paper thorough yourself with the GMAT math syllabus below:

Arithmetic: Number systems and number theory, Multiples and factors, Fractions, Decimals, Percentages, Averages, Powers and roots, Simple and Compound Interest, Speed, time, and distance, Pipes, cisterns, and work time, Ratio and proportion

Geometry: Lines and Angles, Triangles, Quadrilaterals, Circles, Rectangular solids and cylinders, Coordinate geometry

Modern Math: Mixtures and alligations, Permutations and combinations, Descriptive statistics, Sets, Probability, Sequences and series

Algebra: Monomials, polynomials, algebraic expressions and equations, Functions, Exponents, Arithmetic and geometric progressions, Quadratic equations, Inequalities and basic statistics
How is the Quantitative Reasoning Section of GMAT scored?
The GMAT math section is computer adaptive. This means that the difficulty of each question depends on your previously answered question. Your scoring too depends on the same. A higher score is achieved by solving questions of a greater difficulty level.

You’re scored on a 651 score range, with a 1point interval for the GMAT Quantitative test

This score adds up to your total score of 200800 along with your Verbal Reasoning score

Scoring about 37 or above is a good score in the Quantitative Reasoning section of GMAT

The GMAT Quantitative score is as vital as the total GMAT score for Business Universities across the World
Master these Strategies to achieve High Score in Quantitative Reasoning:
Having strategies to help you advance your preparation can scale up your performance. Here are a few strategies you can use to score well:

A strong foundation: Basics of mathematics are essential. Brushing your basics even before you begin your advanced preparation is absolutely necessary.

Problemsolving speed: Speed matters! As you have a penalty for missing out on questions. Time yourself and practice. You have 62 minutes to answer 31 questions. So, put in place a time management plan for problemsolving.

Practice! Practice! Practice! You’ll know exactly where you stand with practice tests. Take as many as you can and learn to work on your weaknesses.

Maintain an error log: By maintaining an error log, you will be able to work towards filling the gap of your errors. Careless mistakes, timerelated issues, conceptual problems are various errors you can keep a track of and fix!

Focus on all kinds of questions: Many candidates focus on complex problems and reject learning simpler, easy quick questions. These are as important as the tough ones. Learning all types of problems in the GMAT math syllabus will help you attend your test better.

Use GMAT Flashcards: Quant flashcards are available online to help you regularise practicing for the test. An interactive platform will ease your learning process.
GMAT Quantitative Reasoning Study Guides:
Total GMAT Math (Jeff Sackmann)
GMAT Advanced Quant (Manhattan Prep)
3 mistakes to avoid while taking the GMAT Quantitative test:
Candidates attending Quantitative Reasoning usually have a few error patterns which you can omit. Here’s a list to help you identify them:

Reading with a lazy eye: Engaging in assumptions of presented data or carelessness about looking up to the right values. These are errs that many students make. Avoid doing that. Pay attention and be cautious about the presented data in the questions.

Choosing to be oversmart, rather than being smart: Sometimes you get pumped up to display your expertise in the field by overdoing it. The GMAT Quantitative test is certainly not to be one of those places. Stick to what is taught, how much is asked and answer accordingly. REMEMBER, There are no extra marks given for a fancy method of solving problems.

Don’t underestimate the power of a complete paper: GMAT requires you to answer as many questions as you can. Complete the paper to avoid losing points. Guess the answer for the questions you don’t know.
Suggested: GMAT Quants Preparation
Despite the complexity of numbers, variables and x’s, GMAT Quantitative Reasoning section is doable. Practice and regular learning will help you attend the test with ease. Take regular practice tests until you don’t score a regular 4045 range. Correct your errors and you’ll find yourself acquainted with all concepts and problems.
In the big picture, to be the crème de la crème, focusing all your efforts to prepare only on the Quantitative Reasoning section will be a dead loss. Invest time in understanding the overall syllabus and pattern of the exam as well. It is equally important for you to gauge the other GMAT sections, namely, Verbal Reasoning, Integrated Reasoning and Analytical Writing Assessment. A tight study plan and preparation for GMAT will lead you to be the brightest of the batch!