GMAT Math Formulas
Math Formulas You Cannot do Without
In the GMAT Quantitative Section, you will have to solve 37 multiple-choice questions in 75 minutes in a computer adaptive test. The questions are of two different types: Problem Solving and Data Interpretation. For success in this section, knowledge of math formulas is crucial.
What are Math Formulas?
Formulas are no different from other math formulas that one comes across. The only difference that comes forth is the range of formulas. If you pick up any test prep book, you’ll find the initial few chapters devoted to explaining the syllabus of the exam. It is from this syllabus that we draw our ideas of studying for the test. There are some concepts that are not asked in the test while they are given importance in school education and vice-versa. Hence, prudence lies is going though the syllabus to decide what formulas classify as important.
Where to get Formulae
One of your initial sources of studying is the GMATPrep Software itself. There is no other free source from the makers of the test, which can supply you more information than this software can for preparation. Browse through the subsections, which are Arithmetic, Algebra, Geometry and Word Problems of the Math Review in the software to understand the range of topics covered in the exam. The corresponding descriptions shall give you an idea of formulae that you need to collect. The Official Guide for GMAT Quantitative Review should be your next bet if you are ready to make a purchase. Of course, there are other preparation books and software for which you don’t have to spend a dime, but there is no guarantee that they furnish you with absolute content; they could emphasise on unnecessary details to make their content seem more competitive and wholesome.
Why are Formulae Important?
The concept of accurate formulas is unique to calculations in mathematics. These formulas remain unchanged through time, as they do not depend on changes in society, environment, growth, loss or other such variables. It is this quality of math formulas that makes them applicable to a variety of problems. Math formulas for one topic can be applied to different problems from a variety of topics. Hence, each formula usage gains more importance than is obvious.
Strange as it may sound, each problem in math can be solved purely on the basis of concepts without the application of any formula. However, formulas are like tools that help you arrive at the correct answer without having to go back to the basics. They make calculations easier and you save on time.
How to utilize Math Formulas
For making the best use of formulas, you should follow the following guidelines.
Make a list of all the formulas in one place. There should be one long list in which you categorize the formulas as per the topics.
Memorize them while keeping in mind what the short forms stand for. After memorizing them, practice math problems side-by-side, instead of learning all at once before and applying them later to problems.
The real challenge does not lie in memorizing formulas but in understanding where they are to be applied. This is particularly significant in the word problems. At times two or more formulas need to be applied to arrive at a solution.
Remember that there shall be some in your list that are not used often. Nonetheless, you should learn such formulas as well. At times knowledge and application of such concepts are decisive in competition.
At times it is not required that all the forms of the fundamentals be learnt. For instance, you need not learn how to calculate the speed when distance and time are given if you are aware of the formula for calculating the distance when speed and time are given. You can work around one formula to obtain its other forms.
Here are some Important Concepts