ACT Math: Strategy, Core Topics, and Calculator Use
ACT Math is a timed, multiple-choice test covering pre-algebra through trigonometry. The key is pacing: you have about one minute per question, so do not linger. Work in order but skip time-consuming problems and return later. Since there is no penalty for guessing, always fill in an answer.
Core topics include linear equations, ratios and proportions, percents, exponents, systems of equations, functions, geometry (angles, triangles, circles, area and volume), coordinate geometry, and basic trigonometry (SOH-CAH-TOA). Word problems often test translating English into equations. A frequent trap is unit mismatch-miles versus feet, minutes versus hours. Another is answering the wrong quantity: the question asks for the value of 2x, but you solved for x. Underline what is being asked.
Worked example
If 3x + 4 = 19, then 6x + 8 = ? Rather than solving for x, notice 6x + 8 is exactly twice 3x + 4, so it equals 38. Recognizing structure saves time.
Use your calculator for arithmetic and graphing, but write down setup steps so you can check work. Estimate before computing to catch errors: if an answer should be near 50 and you get 500, recheck. Draw diagrams for geometry and label given information.