GRE Calculator is a software you can use to sharpen up your quantitive reasoning skills for the Graduate Record Exams. It is educational and it’s also identical to the official calculator that you are allowed to use during the exam. This is a good functionality because not all GRE calculators are identical to the ones you can use on the test. The interface is straightforward in displaying the four functions of this calculator. This education and reference software has over 20 different problems you can solve to check your mathematical and reasoning skills. Each question is provided with a set of solutions and solutions so you can use it as reference.