How to prepare for the DAA: a practical revision plan

The Defence Aptitude Assessment (DAA) measures natural ability, but that does not mean preparation is pointless — far from it. Familiarity with the question styles, confident mental arithmetic and good timing can all lift your performance and remove the surprises that trip people up on the day. This guide sets out a practical, no-nonsense plan for preparing across all six sections of the DAA, whether you are applying to the RAF or the Royal Navy.

Know what you are preparing for

Before you revise, make sure you understand the test. The DAA has six timed, multiple-choice sections — verbal reasoning, numerical reasoning, work rate, spatial reasoning, mechanical comprehension and electrical comprehension — and you sit it without a calculator. Each section is timed separately, so pacing within each one matters. If you have not already, read our Defence Aptitude Assessment explained guide so you know exactly what each section asks of you.

Practise each section type

The single most effective thing you can do is work through realistic questions for every section, not just the ones you enjoy. It is tempting to keep practising your strong areas because it feels good, but your score gains come from shoring up weak spots. Set aside dedicated time for each of the six sections and track how you do, so you can see where to focus.

• Verbal reasoning — read closely, and practise drawing only the conclusions the text actually supports rather than what seems likely.
• Spatial reasoning — train your eye by mentally rotating shapes and picturing how nets fold into 3D objects.
• Work rate — this section is about speed and accuracy under pressure, so practise following rules quickly without careless errors.

Use a set of practice tests that mirror the real format so there are no surprises when it counts.

Sharpen your mental arithmetic

Because there is no calculator in the DAA, the numerical section rewards fast, accurate mental maths. This is one of the most trainable parts of the whole test. Spend a little time most days on:

• Times tables up to at least 12, until recall is instant.
• Fractions, percentages and ratios — converting between them and applying them to word problems.
• Quick estimation — being able to rule out obviously wrong multiple-choice options saves precious seconds.

Practising by hand, without reaching for your phone, builds the exact skill the section tests. The reasoning sections carry a lot of weight across roles, so this effort pays off broadly — see our guide on DAA scores and what they mean for why.

Learn the mechanical and electrical basics

The mechanical and electrical comprehension sections reward a working grasp of everyday physics rather than advanced knowledge. A little targeted learning goes a long way:

• Gears — how gear size affects speed and direction, and which way meshed gears turn.
• Levers and pulleys — how they trade force for distance and where the pivot or load sits.
• Forces and simple machines — balance, weight, and how effort is applied.
• Basic circuits — how current flows, what happens in series versus parallel, and the roles of switches, resistance and simple components.

You do not need a physics qualification. Understanding these core principles well enough to reason through a diagram is exactly what these sections are checking.

Do timed practice

Knowing the material is only half the battle; doing it against the clock is the other half. Each DAA section is timed separately and some, like work rate, give you very little time per question. Practise under realistic time limits so you learn to keep moving, make quick decisions and avoid getting stuck on a single question. A useful habit is to answer everything you can quickly first, since leaving an achievable question unanswered because you ran out of time is a genuine waste.

Aim to build a rhythm where you are scoring consistently, not just occasionally, before you sit the real thing. Reviewing every question you get wrong — and understanding why — teaches far more than simply doing more questions.

Sort out sleep and logistics for the day

Your preparation should extend to the day itself. Small things make a real difference to how you perform:

• Sleep well the night before — a rested brain reasons faster and makes fewer careless mistakes.
• Eat something sensible beforehand so you are not distracted by hunger or an energy crash.
• Sort your logistics in advance — know where you are going or how a remote test will run, and have any required ID or equipment ready.
• Arrive calm with time to spare, so you start the first section settled rather than flustered.

Put it all together

A good plan is simple: understand the test, practise all six sections with extra focus on your weak areas, drill mental arithmetic daily, learn the mechanical and electrical basics, and rehearse under timed conditions until your performance is steady. Then look after yourself the night before. If you are still mapping out the wider journey, our step-by-step guides on how to join the RAF and how to join the Royal Navy show where the DAA fits in. When you are ready, put it into practice with our free practice tests.