In the print window, choose “Save as PDF” to keep a copy on your device.
1Formulas and methods
Nursing assistant (CNA) knowledge
Method
Check whether the resident is in danger right now (not breathing, choking, a fall, chest pain, stroke signs); if so, keep them safe and get the nurse at once.
Ask whether the task is within the nursing assistant’s scope and training; if not, decline politely and tell the nurse.
Respect the resident’s rights: privacy, choice, refusal of care, dignity and freedom from abuse and unneeded restraints.
Apply the basic rules: hand hygiene, body mechanics, bed low and call light within reach, weak side first when dressing.
Observe and report: compare with the resident’s usual state and report changes promptly and objectively.
Nursing math & unit conversions
Metric steps
1 kg = 1000 g, 1 g = 1000 mg, 1 mg = 1000 mcg, 1 L = 1000 mL
Weight and length
1 kg = 2.2 lb, 1 lb = 16 oz, 1 in = 2.54 cm, 1 ft = 12 in
Household measures
1 tsp = 5 mL, 1 tbsp = 15 mL, 1 fl oz = 30 mL, 1 cup = 8 fl oz = 240 mL
Write the given quantity with its unit and the unit you want.
Pick the equivalent: 1000 between kg, g, mg and mcg or L and mL; 1 kg = 2.2 lb; 1 tsp = 5 mL, 1 tbsp = 15 mL, 1 fl oz = 30 mL, 1 cup = 240 mL.
Write it as a fraction so that the unwanted unit cancels; for a rate, use one fraction per unit that changes.
Check the direction: a smaller unit gives a bigger number.
Round only the final answer, to the precision the question names.
2Practice problems
1.Nursing assistant (CNA) knowledgeMedium
Why should nursing assistants keep their fingernails short and avoid artificial nails?
AShort nails help the nursing assistant write and type faster on the chart
BLong nails make it harder to use the call light
CArtificial nails are not allowed outside of work
DLong and artificial nails hold germs and can scratch residents
2.Nursing assistant (CNA) knowledgeHard
A resident keeps removing her nasal cannula because the tubing hurts her ears. What should the nursing assistant do?
ATape the cannula to her face so she cannot remove it
BLeave the cannula off because she does not want it
CChange her to a different oxygen device without asking
DTell the nurse, who may approve padding or another solution
3.Nursing math & unit conversionsMedium
Practice exercise (made-up values, not clinical guidance). A dose is charted at 18:00 (24-hour clock). Which entry is the same time on the 12-hour clock? Click it.
18:00
16:00 AM
28:00 PM
36:00 PM
45:00 PM
4.Nursing math & unit conversionsHard
Practice exercise (made-up values, not clinical guidance). A maintenance infusion runs at 20 mL/h without a break. How many litres V does it deliver in 24 hours?
20 mL/h24 h
V = L
3Solutions
1.Nursing assistant (CNA) knowledge
Answer: D · Long and artificial nails hold germs and can scratch residents
Why this is the answer
Germs collect under long and artificial nails and are harder to remove with hand hygiene. Long nails can also tear fragile skin and gloves.
Answer
D · Long and artificial nails hold germs and can scratch residents
2.Nursing assistant (CNA) knowledge
Answer: D · Tell the nurse, who may approve padding or another solution
Why this is the answer
Oxygen is ordered for a reason, so the nurse must know if the resident is removing it. The nurse may approve ear padding or other comfort measures. The nursing assistant does not change oxygen devices alone.
Answer
D · Tell the nurse, who may approve padding or another solution
3.Nursing math & unit conversions
Answer: 6:00 PM
24-hour clock: from 1 PM onwards add 12 to the hour (3:45 PM = 15:45). Midnight to 12:59 AM is 00:00–00:59, and 12:00–12:59 PM stays 12:00–12:59. Going back, subtract 12 from hours 13–23 and add PM; hours 00 become 12 AM. Count time across midnight in two parts: up to 24:00 (00:00), then from 00:00 on.
Convert the hour
18 − 12 = 6 → PM
Answer
6:00 PM
Answer
6:00 PM
4.Nursing math & unit conversions
Answer: V = 0.48 L
Dimensional analysis: write the given quantity, then multiply by conversion factors written as fractions (for example 60 min/1 h or 1 mg/1000 mcg) so that each unwanted unit appears once on top and once underneath and cancels. When only the wanted unit is left, calculate. Use the equivalents the question gives and round only the final answer.
Volume in a day
20 mL/h × 24 h = 480 mL
In litres
V = 480/1000 = 0.48 L
Answer
V = 0.48 L
This is independent practice material. ExamProblems is not affiliated with or endorsed by the organisation that runs this exam, and the exam name is used only to describe the content.