The SAT Math formula sheet
The SAT gives you a reference sheet, and it is not the one you need. These are the 24 things the Math section actually tests, one diagram each, every one worked through on a real SAT question. Free, and the PDF does not ask for an account.
Algebra
Advanced Math
5. Exponent Rules
Equivalent expressions
6. Exponential to Radical
Equivalent expressions
7. Factoring
Equivalent expressions
8. Quadratics
Nonlinear functions
9. Quadratic Interpretations
Nonlinear functions
10. Discriminant
Nonlinear equations in one variable and systems of equations in two variables
11. Exponential Equation
Nonlinear functions
12. Transformations
Nonlinear functions
Problem-Solving and Data Analysis
13. Unit Conversions
Ratios, rates, proportional relationships, and units
14. Percent Change
Percentages
15. Statistics
One-variable data: distributions and measures of center and spread
16. Standard Deviation
One-variable data: distributions and measures of center and spread
17. Probability
Probability and conditional probability
18. Statistical Inference
Inference from sample statistics and margin of error
