If you're prepping for a civil service exam, this book is a decent starting point. The practice questions cover business math, filing, and categorizing—key areas for an account clerk role. I found myself flipping through it during my commute, and it definitely helped shake off some rust.

But here's the catch: the errors are frustrating. I spotted wrong answers and typos, like a question using 3/8 magically becoming 5/8 in the solution. It’s baffling! While some tests include helpful explanations, others just throw answers at you without showing the work—not ideal if you’re trying to learn.

On the plus side, having solutions (even flawed ones) lets you cross-check your reasoning. Just don’t rely on this as your sole resource. If you’re aiming for a bookkeeping-specific exam, look elsewhere in the series. For general account clerk prep? It’s usable—but keep a critical eye.