CNA Practice Test — with an explanation for every question

The complete free guide to passing the CNA exam

Last reviewed · Written by the Toolskia study team · Independent study material — not affiliated with Credentia, Pearson VUE, Prometric, the NNAAP® program, any state nurse aide registry or any official certification body.

Becoming a certified nursing assistant is one of the fastest routes into healthcare, and the certification exam is very passable once you understand how it is built and what it is really testing. It is not trying to trick you with obscure medical theory. It is checking one thing above all: can you give safe, kind, dignified care, and do you know when to act yourself and when to report to the nurse? Almost every question, no matter the topic, comes back to safety, infection control, residents' rights and good communication. Keep those four ideas in mind and a surprising number of questions answer themselves. Work through this tool in Practice mode first so every explanation sinks in, then prove your speed and stamina in a timed Mock.

How the CNA certification is structured

Certification has two separate parts, and you usually must pass both. The first is the written exam (some states offer an oral version for candidates who prefer it), a multiple-choice test of your knowledge. The second is the skills evaluation, where you physically perform a few care tasks in front of an evaluator. This practice test builds the knowledge for the written exam and the thinking behind the skills, but you should always rehearse the hands-on steps with your training program too, because the skills test grades exactly how you do each step.

The written exam is multiple choice, with about 60 scored questions plus roughly ten unscored trial questions that the testing body is quietly evaluating for future use — you will not know which are which, so treat every question as if it counts. You generally have around 90 minutes, which is comfortable: a little over a minute per question. The passing standard is set by your state and program and is commonly somewhere in the 70 to 80 percent range, so confirm the exact number for where you live. This tool uses a 70 percent study target as a reasonable benchmark to aim past.

What is on the test — the content areas

The questions are grouped into three big domains, and knowing roughly how much weight each carries tells you where to spend your study time. The table below reflects the publicly published nurse aide content outline; the percentages are approximate and the exact mix can vary slightly by state.

The headline is that Physical Care Skills is by far the largest slice, and within it, basic nursing skills (things like vital signs and infection control) is the single biggest piece. But do not neglect the Role of the Nurse Aide domain: residents' rights and ethics questions are heavily represented and are some of the easiest points on the whole test once you know the rules, because the safe, respectful answer is almost always correct.

Activities of daily living

Activities of daily living — usually shortened to ADLs — are the everyday tasks of bathing, dressing, grooming, eating, toileting and moving about. A huge part of the job is helping residents with these in a way that keeps them safe and protects their dignity and independence. The single most important principle across all ADL questions is to let the resident do as much as they safely can for themselves; your job is to assist, not to take over. Rushing someone, or doing for them what they could do alone, is almost always the wrong answer.

A few specifics come up again and again. When you help dress a resident who is weak on one side — for example after a stroke — you put the clothing onto the weaker (affected) side first, and when undressing you take it off the weak side last. The weak limb has less movement, so it needs the larger, easier opening; forcing it through a sleeve last can hurt the joint. For grooming and bathing, always check that bath water is comfortably warm and not hot enough to scald, test hot food and drinks before serving, and keep the resident covered as much as possible to protect their dignity. When you provide perineal (peri) care for a female resident, always clean from front to back to avoid moving bacteria from the rectal area toward the urinary opening, which can cause infection. For mouth care on an unconscious resident, turn the head to the side so that fluid drains out and is not breathed into the lungs.

Basic nursing skills and vital signs

This is the largest single chunk of the exam, and vital signs are at its heart. A CNA measures and records temperature, pulse, respirations and blood pressure accurately, and reports anything outside the normal range to the nurse — but a CNA never diagnoses and never decides on treatment. Knowing the normal adult ranges cold lets you answer a whole family of questions and recognise what to report.

A couple of practical points the exam loves. You feel the radial pulse at the wrist on the thumb side, using your fingertips, not your thumb. When you count respirations, do it without telling the resident, because as soon as people know their breathing is being watched they change it; a good trick is to keep your fingers on the wrist as if still taking the pulse. Weigh a resident at the same time of day, on the same scale, in similar clothing, so the numbers are comparable over time. And when you record fluid output, urine and other fluids are measured in millilitres (mL/cc). Any reading well outside the normal ranges — a resting pulse over 100, breathing slower than 12 or faster than 20, or a blood pressure such as 182/104 — is something you report to the nurse promptly.

Infection control and standard precautions

Infection control protects residents, you and everyone in the building, and it is tested heavily. The single most important measure, and the answer to a remarkable number of questions, is hand hygiene: wash your hands before and after every resident contact, after removing gloves, and any time they are soiled. When you wash, keep your fingertips pointing downward so water carries dirt from your cleaner wrists down off your fingertips into the sink, rather than running back up your arms.

Follow standard precautions, which means treating the blood and body fluids of every resident as potentially infectious, not just those known to be ill — you cannot always tell who carries an infection. When a task calls for personal protective equipment, put it on in the order gown, mask, goggles, then gloves (gloves go on last and come off first, because they get the dirtiest). Remove it carefully so you do not contaminate your skin, and wash your hands again afterward. Knowing the reasoning, not just the sequence, is what lets you answer the trickier infection-control questions.

Safety, falls and emergencies

Preventing harm is a constant theme. To reduce falls, keep the bed in its lowest position with the wheels locked, make sure the call light is within reach, clear clutter, and answer call lights promptly. If a resident begins to fall while you are with them, do not try to hold them upright — you will both go down. Instead, ease them gently toward the floor, protecting the head, and lower yourself with them; then call for help and do not move them until the nurse has checked them.

Two acronyms show up often. For fire, remember RACE: Rescue anyone in danger, sound the Alarm, Confine the fire by closing doors, and Extinguish it or evacuate. (Many programs also teach PASS for using an extinguisher: Pull, Aim, Squeeze, Sweep.) If a resident is choking — clutching the throat, unable to speak, cough or breathe — you perform abdominal thrusts. If someone can still cough or speak, encourage them to keep coughing and stay with them. Knowing the difference between a partial and a complete airway blockage is a classic exam point.

Restorative care and safe mobility

Restorative care is about helping residents keep, or regain, as much function and independence as possible rather than letting them decline. A key tool is range-of-motion (ROM) exercises, which move the joints through their normal movements to keep them flexible and prevent contractures — the permanent tightening and stiffening of a joint that has not been moved. When a resident cannot move a joint themselves and you move it for them, that is passive range of motion; when they do it themselves, it is active. Good positioning matters too: a foot board or proper support helps prevent footdrop, and regular repositioning prevents pressure injuries.

Move people with good body mechanics to protect both of you: feet apart for a wide base, knees bent rather than your back, the person held close to you, and your strong leg muscles doing the lifting — never twist your spine. Use a gait or transfer belt when one is ordered, grasping it with an underhand grip from underneath so it cannot slip. A resident who uses a cane holds it on the strong (unaffected) side and moves the cane and the weak leg together. And to prevent pressure injuries, a bedfast resident should be repositioned at least every two hours.

Psychosocial, mental-health and cultural needs

People are more than their bodies, and the exam expects you to support emotional, social, spiritual and cultural needs. The overarching answer here is respect: respect a resident's feelings, choices, beliefs and background, even when they differ from your own. When a resident is grieving or sad, the right move is to listen, allow them to express their feelings, and offer quiet support — not to change the subject, tell them to cheer up, or avoid them. Report a resident who becomes withdrawn or shows signs of depression to the nurse.

Caring for residents with dementia or confusion calls for a steady, gentle manner: approach from the front so you do not startle them, speak slowly in short, simple sentences, use a calm and reassuring tone, reduce noise and distractions, and redirect gently rather than arguing or correcting harshly. If a resident becomes combative, your first duty is everyone's safety — stay calm, do not argue back, protect the resident and others, and report to the nurse. Respect cultural and religious practices around food, dress, modesty and worship, and treat the need for intimacy and personal relationships among older residents as the normal human need it is, providing privacy. Patience and kindness are not extras here; they are graded skills.

Communication, residents' rights and ethics

This domain is full of easy points because the safe, respectful, lawful answer is nearly always correct. Good communication means facing a resident and speaking clearly at a normal pace for someone hard of hearing (not shouting), using simple words, giving people time to respond, and reporting your observations accurately to the nurse. You report what you observe — objective facts — and leave judgments and diagnoses to the nurse.

Residents' rights are protected by law, and they appear constantly. Residents have the right to privacy and dignity (knock before entering, keep them covered during care, do not expose them needlessly), to be free from abuse and from unnecessary restraints, to refuse care or treatment, to make their own choices, and to have their personal information kept confidential — you discuss a resident only with the care team who need to know, never with other residents, visitors or on social media. If a resident refuses care, you respect the refusal and report it; you never force care. Physical or chemical restraints may be used only with a doctor's order, for a genuine medical reason, and as a last resort — never for staff convenience or punishment, and confining a resident to a room against their will is involuntary seclusion, a violation. Finally, if you ever suspect abuse or neglect, you are required to report it immediately to the nurse or supervisor; doing nothing is itself a serious failing. Learn these rules cold and an entire block of the exam becomes nearly free.

The skills evaluation — what to expect

After the written test you demonstrate a handful of hands-on skills for an evaluator. Hand hygiene (handwashing) is almost always required as the first skill, and then you are given several randomly chosen tasks — for example measuring a radial pulse or blood pressure, providing perineal care, helping with range-of-motion exercises, making an occupied bed, or transferring a resident with a gait belt. What trips candidates up is rarely the task itself but the indirect-care steps woven around it: greeting the resident and identifying yourself, explaining what you are going to do, providing privacy, ensuring safety (locking wheels, lowering the bed), checking on comfort, washing your hands at the right moments, and reporting when done. Practise those steps until they are automatic, because evaluators grade them on every skill.

A simple study plan

Treat your preparation as short, frequent sessions rather than one long cram, because care knowledge sticks through repetition. Start each session in Practice mode so you read every explanation and absorb the reasoning, then run a timed Mock to build the speed and stamina the real test rewards. After each run, open the topic breakdown and spend your next ten minutes on your two weakest areas — if "Infection Control & Safety" or "Communication, Rights & Ethics" is dragging you down, fix that first, because those areas carry a lot of questions. Bookmark the questions that fool you and use "retry bookmarked" until they no longer do. Keep the two-minute daily five-question challenge streak going for steady exposure, and pair this written practice with hands-on rehearsal of the skills from your training program.

Common mistakes that cost points

1. Taking over instead of assisting. The right answer almost always lets the resident do what they safely can. 2. Forgetting hand hygiene. When in doubt about an infection-control question, washing your hands is usually right. 3. Skipping the resident's dignity. Knock, explain, provide privacy and keep them covered — these are graded, not optional. 4. Dressing the strong side first. Always the weak (affected) side first, undress it last. 5. Trying to hold a falling resident upright. Ease them to the floor and protect the head. 6. Acting outside your role. A CNA observes, records and reports; diagnosing, deciding treatment or applying restraints without an order is the nurse's or doctor's job. 7. Ignoring or delaying an abuse report. Suspected abuse must be reported immediately. 8. Telling a resident their breathing is being counted. Count respirations discreetly so the rate stays natural.

Pro tips for test day

Pick the safest, kindest, most respectful answer. When two choices seem possible, the one that protects the resident's safety, dignity and rights is nearly always correct. Read the whole question. Words like "first," "best," "most important" or "except" change the answer — slow down on them. Stay inside your role. If a choice has the CNA diagnosing, prescribing or deciding treatment, it is wrong; reporting to the nurse is usually right. Do not overthink the easy rights questions. Trust the rule. Manage your time, but you have plenty. About a minute per question is comfortable; never leave a blank because there is no penalty for guessing. And after each run on this tool, drill your weakest topic and your bookmarked questions — that is where your next few points are hiding.

Authoritative sources to confirm everything

This guide and tool are for study only, and the exact rules and numbers can change. Always confirm specifics with official sources:

• Your state's nurse aide registry or board of nursing handbook — the official content outline, passing score, number of questions, time limit and the list of testable skills for your state.
• The testing body for your state (such as the published nurse aide candidate handbook) — current written-exam format and the skills evaluation procedure.
• Your CNA training program and instructor — hands-on skill steps and any state-specific procedures, which this written practice cannot replace.

Frequently asked questions

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