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
How can a nursing assistant make daily weights as accurate as possible?
ASame time, same scale, similar clothing, after urinating
BWearing shoes and a coat, so the clothing is always the same
CAny time of day, as long as the scale is checked beforehand
DRight after breakfast, so the resident has more energy
2.Nursing assistant (CNA) knowledgeHard
During a transfer, a nursing assistant notices a small new skin tear on the resident's forearm. What should the nursing assistant do?
ALeave it, because small skin tears heal on their own
BCover it with adhesive tape so the resident does not notice it
CMention it only if the family asks about it
DReport it to the nurse and handle the arm more gently
3.Nursing math & unit conversionsMedium
Practice exercise (made-up values, not clinical guidance). A patient’s temperature is 104.6 °F. Convert it to degrees Celsius T with °C = (°F − 32) × 5/9. Round to one decimal place.
104.6 °F
T = °C
4.Nursing math & unit conversionsHard
Practice exercise (made-up values, not clinical guidance). A prescription reads 2 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?
2 tspfour times a day7 days150 mL1 tsp = 5 mL
N =
3Solutions
1.Nursing assistant (CNA) knowledge
Answer: A · Same time, same scale, similar clothing, after urinating
Why this is the answer
Weight is measured at the same time of day, on the same scale, in similar clothing and after the resident has emptied the bladder. A sudden change is reported because it may mean fluid gain or loss.
Answer
A · Same time, same scale, similar clothing, after urinating
2.Nursing assistant (CNA) knowledge
Answer: D · Report it to the nurse and handle the arm more gently
Why this is the answer
Skin tears are injuries that are reported and documented, and the nurse decides how to treat them. Older skin is fragile: lift rather than drag, support the limbs and avoid adhesive tape on the skin.
Answer
D · Report it to the nurse and handle the arm more gently
3.Nursing math & unit conversions
Answer: T = 40.3 °C
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.
Subtract 32
104.6 − 32 = 72.6
Multiply by 5/9
T = 72.6·5/9 = 40.33 ≈ 40.3 °C
Answer
T = 40.3 °C
4.Nursing math & unit conversions
Answer: N = 2
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
10 mL × 4 × 7 = 280 mL
Bottles
280/150 = 1.867 → N = 2
Answer
N = 2
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.