I was just wondering, do most companies let you use calculators in their numerical aptitude tests. I have been doing the SHL tests with a calculator and am worried that the real thing will be without.

It depends which level of SHL test you are doing. I'd expect (and hope!) that you will be sitting one of the two higher level test batteries for a consulting position, these are MGIB and AMT. You can use a calculator for these.That said, even for the tests that don't let you use a calculator, the math isn't that tough - answers rarely go beyond one decimal place.Good luck