Four full practice sets built in the exact look and flow of a real digital exam. Pick a set below, answer at your own pace, and see the explanation the moment you choose — build the skills to handle any problem the real test throws at you.
Core skills: fraction operations, decimal-fraction conversion, basic percent, and simple ratios.
Mixed numbers, percent increase/decrease, proportion word problems, and multi-step ratios.
Combined operations, chained percent changes, inverse-proportion traps, and layered ratio problems.
Hand-picked problems that target the exact traps Korean students fall into: "increased BY" vs "increased TO," successive discounts, inverse proportion, and fraction-of-a-remaining-fraction problems.
Every answer choice is triple-checked for accuracy. Explanations appear instantly after you choose an answer, so you can study independently — no answer key needed while you work. Use the on-screen calculator (bottom-right, inside a test) whenever you need it.