NO!! The only calculator you will have is the one in the computer which will only be available during the Quantitative Reasoning section. I highly recommend you start rounding your numbers while calculating for faster calculations
The calculations are fairly simple on the test during the science section. But you will need to learn the tricks for doing logarithms without a calculator (the Kaplan book ha a section on it). I definitely needed to practice doing some tough math problems without working every step and rounding. You won't need to get the exact answer most of the time because it's multiple choice.