Omg the years I spent learning this stuff just to work for a boss that says I'm "not a math person" lolz but not really

calculus derivatives limits sheet (free printable, plus the page explains the concepts)

Algebra Tool Kit Reference Sheet - Free Printable Cheat Sheets. Four pages of easy-to-memorize algebra formulas.-Homeschool Encouragement

Free Printable Cheat Sheets

Algebra reference chart and 8 Additional Great School Cheat Sheets - the kind you won't get in trouble for using!