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 should a nursing assistant count a resident's respirations?
ACounting each rise and each fall of the chest as separate breaths
BFor 10 seconds, then multiplying by six
CAfter asking the resident to breathe normally for one minute
DWithout telling the resident, while still holding the wrist
2.Nursing assistant (CNA) knowledgeHard
A resident tells the nursing assistant, "I have a heavy pressure in my chest, but don't bother the nurse, it will go away." What should the nursing assistant do?
AHelp the resident walk around to see whether it eases
BWrite it down and mention it at the end of the shift
CRespect the request and check again in an hour
DStay with the resident and get the nurse immediately
3.Nursing math & unit conversionsMedium
Practice exercise (made-up values, not clinical guidance). A patient’s temperature is 96.9 °F. Convert it to degrees Celsius T with °C = (°F − 32) × 5/9. Round to one decimal place.
96.9 °F
T = °C
4.Nursing math & unit conversionsHard
Practice exercise (made-up values, not clinical guidance). A prescription reads 1 tsp of an oral suspension every 8 hours for 7 days. Using 1 tsp = 5 mL, how many mL V are needed for the whole course?
1 tspevery 8 hours7 days1 tsp = 5 mL
V = mL
3Solutions
1.Nursing assistant (CNA) knowledge
Answer: D · Without telling the resident, while still holding the wrist
Why this is the answer
Respirations are counted without the resident's knowledge, for example by keeping the fingers on the wrist after counting the pulse. One rise and one fall together count as one breath, and the count is usually done for a full minute if breathing is irregular.
Answer
D · Without telling the resident, while still holding the wrist
2.Nursing assistant (CNA) knowledge
Answer: D · Stay with the resident and get the nurse immediately
Why this is the answer
Chest pain or pressure may be a heart attack and must be reported at once. The nursing assistant stays with the resident, uses the call light to get the nurse and keeps the resident resting.
Answer
D · Stay with the resident and get the nurse immediately
3.Nursing math & unit conversions
Answer: T = 36.1 °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
96.9 − 32 = 64.9
Multiply by 5/9
T = 64.9·5/9 = 36.06 ≈ 36.1 °C
Answer
T = 36.1 °C
4.Nursing math & unit conversions
Answer: V = 105 mL
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 per dose
1 tsp = 1·5 = 5 mL
Whole course
V = 5 mL × 3/day × 7 = 105 mL
Answer
V = 105 mL
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.