---
license: cc-by-4.0
language:
  - en
pretty_name: SAT Math Formula Sheet
size_categories:
  - n<1K
tags:
  - education
  - mathematics
  - sat
  - test-prep
---

# SAT Math Formula Sheet

The 24 formulas and concepts the SAT does not give you on its reference sheet.

The digital SAT provides a reference sheet on every math question with area,
circumference, volume and right-triangle formulas. It does not provide slope,
the quadratic forms, the discriminant, exponent rules, percent change,
exponential growth, probability, or the circle equation. These 24 cover what it
leaves out.

## Contents

`formulas.json` holds 24 records:

| field | meaning |
| --- | --- |
| `n` | position on the sheet, 1 to 24 |
| `slug` | stable identifier |
| `title` | name of the concept |
| `domain` | one of the four College Board domains |
| `skill` | College Board skill name |
| `formula` | the notation, one string per line; empty for the three that are concepts rather than equations |
| `note` | one-line reading of the formula |
| `keyPoint` | what the SAT actually tests on it, and the usual trap |
| `url` | full explanation with a solved SAT question |

Three of the 24 are concepts rather than equations (Quadratic Interpretations,
Standard Deviation, Similar Figures) and carry an empty `formula` list with the
point they test in `keyPoint`.

## Source

Written by [Sigma Prep](https://sigmaprep.io), an SAT Math platform.
The full 51-page PDF, with a solved SAT question facing every diagram, is at
<https://github.com/sigma-prep/sat-math-formula-sheet>.

## License

CC BY 4.0. Reuse it, including commercially, with credit to Sigma Prep.