100 questions, woven from both curricula's shared core — starting easy, ending hard. Answer at your own pace, follow the lantern, and light every page.
Linear & quadratic functions, systems, polynomials, rational functions, exponentials, logarithms, transformations, trigonometry, and sequences/statistics — the exact overlap between AP Precalculus and SAT Math, blended into one path. Every question has a small hint and an instant explanation. Pick a timer length below, then begin.