Directions For each question, select the answer choice that best solves the problem. Click a choice to lock in your answer — the correct answer and a full explanation will appear immediately below the question. Use the on-screen calculator for any question if needed. This set intentionally concentrates on high-difficulty, high-error problem types (order-of-operations traps, fraction/ratio manipulation, multi-step percent change, exponent rules, geometry with compound figures, and multi-stage word problems).