Almost always yes. The reason for this is that most numerical reasoning tests used in employment selection are trying to measure your numerical ability in a work setting, where there is usually a calculator available. Very few roles nowadays require employees to perform complex mental calculations, so as such very few selection tests assess this ability. If you are given a test where calculators are not permitted, you will be supervised (which is more expensive than an online unsupervised test for the employer) and the maths involved will be more straightforward.

Given that calculators are almost always permitted, what one do you choose to use? If you get the choice (for example you are taking the test remotely from home) try to use a calculator with which you are familiar. Knowing instinctively where the buttons are and how it works will save  a few vital seconds during your test. Also try to use one which displays your keystrokes on the screen (all scientific calculators do this) because this will help you see where you got to in a  calculation involving several input steps. We’ve all had the feeling whilst inputting numbers to a calculator that we’ve miss-keyed something, or forgotten where we got to, so being able to see this on-screen is a big help.

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