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
When cleaning dentures at a sink, why is the sink lined with a towel or partly filled with water?
ATo keep the water from getting too hot
BTo cushion the dentures in case they are dropped
CTo soak up any toothpaste that falls
DTo make the denture cleaner work faster on stains
2.Nursing assistant (CNA) knowledgeHard
A resident with arthritis is slow to button his shirt but wants to do it himself. The nursing assistant is running late. What should the nursing assistant do?
AButton the shirt for him to save time
BLeave him alone and come back after lunch
CAllow him time and encourage him to finish it himself
DTell him to wear a shirt without buttons from now on
3.Nursing math & unit conversionsMedium
Practice exercise (made-up values, not clinical guidance). A patient’s temperature is 37.8 °C. Convert it to degrees Fahrenheit T with °F = °C × 9/5 + 32. Round to one decimal place.
37.8 °C
T = °F
4.Nursing math & unit conversionsHard
Practice exercise (made-up values, not clinical guidance). A prescription reads 1 tsp of an oral suspension four times a day for 7 days. The suspension comes in 150 mL bottles. Using 1 tsp = 5 mL, how many whole bottles N must be supplied so the course is complete?
1 tspfour times a day7 days150 mL1 tsp = 5 mL
N =
3Solutions
1.Nursing assistant (CNA) knowledge
Answer: B · To cushion the dentures in case they are dropped
Why this is the answer
Dentures can break if dropped on a hard sink. A towel or a little water in the sink cushions them. They are rinsed in cool water to avoid warping.
Answer
B · To cushion the dentures in case they are dropped
2.Nursing assistant (CNA) knowledge
Answer: C · Allow him time and encourage him to finish it himself
Why this is the answer
Encouraging residents to do as much as they can for themselves maintains strength, dignity and independence. Doing tasks for them because it is faster can lead to loss of abilities and self-esteem.
Answer
C · Allow him time and encourage him to finish it himself
3.Nursing math & unit conversions
Answer: T = 100 °F
Temperature: °C = (°F − 32) × 5/9 and °F = °C × 9/5 + 32. Subtract 32 before you multiply when going from °F, and add 32 after you multiply when going from °C. A quick check: 37 °C is 98.6 °F, and every 1 °C is 1.8 °F.
Multiply by 9/5
37.8·9/5 = 68.04
Add 32
T = 68.04 + 32 = 100 °F
Answer
T = 100 °F
4.Nursing math & unit conversions
Answer: N = 1
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.
Total volume
5 mL × 4 × 7 = 140 mL
Bottles
140/150 = 0.9333 → N = 1
Answer
N = 1
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.