Eight hundred problems sorted by archetype rather than by topic, because archetype is the unit the test actually deals in and topic is the unit textbooks are organised by. That single difference is why this book is shaped the way it is.

Twenty archetypes. Forty problems each. Every one written by someone who used to write practice items professionally, which means the wrong answers are designed rather than filler.

The distractor notes

Every solution names the specific mistake each wrong answer was built to catch — the one for students who forget to distribute, the one for students who solve for x when the question asked for 2x, the one for students who misread a units line.

Once you have read forty of those notes you start seeing the design from the other side, and a question stops being four options and becomes one answer plus three diagnoses.

Organisation

1. The archetype in its plainest form, twice, so you see the skeleton

2. Eighteen straightforward instances

3. Sixteen disguised instances, where the archetype is buried in a word problem or a graph

4. Four hard instances that combine it with a second archetype

Timing

Every set carries a target time on its header. Not a suggestion — the time a student scoring 700 takes on it. Working slower than that is fine early and is information later.

One volume, 396 pages, lay-flat binding. Answers and distractor notes in the back.