One of the reasons why the GMAT is my favourite test of all is that it is so well defined in terms of the skills tested and consistently so. One of the things that is absolutely essential to remember on the GMAT Problem Solving (PS) is that the test-setters do not want you to do donkey work with respect to calculation. The leading companies in the world are not paying thousands of dollars to hire graduates from premier b-schools to do what a calculator can do!
In the two previous posts we covered the major idioms tested on the GMAT. While the list of idioms can be potentially unending, a solid understanding of the idioms we covered so far and a few more that we will cover in this post will hold you in good stead to tackle GMAT SC questions that test idiomatic usage.