( Official site )
Use of calculators during the SAT
Every question in the mathematics portion of the SAT can be solved
without a calculator. However, we suggest that you bring and use a
calculator, especially one with which you are familiar. We recommend the
use of a scientific or graphing calculator. You may not use a
calculator while working on the critical reading or writing portions,
and must put the calculator away during these portions of the test.
( my bold of calculator choices )