Hi patto,
I’m glad you reached out, and I’m happy to help. Regarding your careless errors, the real question you should ask is WHY you are making silly mistakes on GMAT exams. There are a multitude of possible reasons, ranging from not reading carefully to writing sloppily to making mental math mistakes. In fact, I wrote an article that discusses
those and more causes of careless errors, and how to fix those issues.
While it’s quite possible that your careless errors are due to some of the reasons I’ve already mentioned, it’s also entirely possible that your careless errors are due, in some part, to a relative lack of GMAT quant knowledge. While I understand that you don’t believe you have a “knowledge issue,” you must remember that unless you know GMAT quant and verbal like the back of your hand, when presented with a GMAT quant or verbal problem in a timed and pressure-filled environment, you are likely to make some sort of careless mistake. Take the following example:
14! is equal to which of the following?
(A) 87,178,291,200
(B) 88,180,293,207
(C) 89,181,294,209
(D) 90,000,000,003
(E) 91,114,114,114
Upon seeing this question, what is the first thing that comes to mind? Grabbing a calculator to add up the values in the expression? If you are able to quickly recognize that using the “5 x 2 pair rule” will allow you to efficiently attack the problem (see the solution below), the question becomes very basic, and you can avoid having to perform tedious calculations that are likely to result in a silly mistake.
Solution:
Notice that there is at least one (5 × 2) pair contained in the product of these numbers. It follows that the units digit must be a zero. The only number with zero as the units digit is 87,178,291,200.
Answer: A
This is just one example, but hopefully you can see that by a) recognizing what the question is asking and b) properly attacking the question, your propensity to make a silly mistake greatly decreases.
Although I’m unsure of how you currently are preparing for the GMAT, moving forward, I recommend that you follow a structured study plan that allows you to methodically find and fix your remaining quant and verbal weaknesses. Studying in such a way ensures that you develop sound mastery of GMAT quant and verbal and thus make fewer careless errors. Once you improve those skills, then resume taking practice exams.
If you’d like more detailed advice on how to improve your GMAT quant skills, or if you have any further questions, feel free to reach back out. Also, you may find it helpful to read this article about
how to score a 700+ on the GMAT.
Good luck!