https://maxthetest.com/demystifiyingthesatandact/chapter-9-act-math-test/

There are five math topics that show up on the ACT test that are not part of what the SAT folks list as math topics.  My suggestion would be to review these topics even if you are only taking the SAT.  They aren’t difficult and they are good things to know.  Be certain to practice.

Be sure to print the pdf file for Chapter 9. The ACT Math Test 3.25.16.