Math flashcards

The formulas and number facts the SAT expects you to carry in your head, from linear equations to circle geometry. Aligned to the College Board Math domain specifications.

The core area, perimeter, volume, and surface-area formulas every geometry student needs cold, from circles to spheres.

Exact unit-circle values plus the identities that carry precalculus: Pythagorean, reciprocal, double-angle, and parity.

Fast multiplication shortcuts: doubling and halving, the elevens trick, round-and-adjust, and squares ending in five.

Mean, median, mode, range, and the probability basics that anchor every introductory statistics course.

One-step and two-step linear equations, solved by undoing operations in reverse. Build the reflexes that make algebra feel automatic.