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NUR2502 / NUR 2502 Dosage Calc Quiz
Week 1 ACTUAL EXAM 2026/2027 |
Multidimensional Care III (MDC 3) | Verified
Questions and Answers 100% Correct |
Rasmussen | Pass Guaranteed
Section I: Metric System Conversions & Basic Dimensional Analysis (Questions 1-5)
1. The provider orders fentanyl 75 mcg IV push. The medication reference states the dose may
also be written as _______ mg.
A) 0.075 mg
B) 0.75 mg
C) 7.5 mg
D) 750 mg
Correct Answer: A) 0.075 mg
Rationale: To convert micrograms (mcg) to milligrams (mg), divide by 1,000 (move decimal 3
places left).
Calculation: 75 mcg ÷ 1,000 = 0.075 mg
Formula: mcg → mg (smaller to larger unit = divide)
Rounding: Exact conversion, no rounding needed.
2. A patient weighs 182 lbs. Calculate the patient's weight in kilograms (kg). Round to the
nearest tenth.
____________ kg
Correct Answer: 82.7 kg
Rationale: To convert pounds to kilograms, divide by 2.2.
Calculation: 182 lbs ÷ 2.2 = 82.7272... kg
Rounding: Round to nearest tenth = 82.7 kg
Formula: lbs ÷ 2.2 = kg
, 2
3. The pharmacy supplies penicillin V potassium oral solution with a concentration of 250 mg/5
mL. The provider orders 0.5 g PO. How many mL should the nurse administer?
A) 1 mL
B) 5 mL
C) 10 mL
D) 25 mL
Correct Answer: C) 10 mL
Rationale: Step 1: Convert grams to milligrams. 0.5 g = 500 mg.
Step 2: Use dimensional analysis or ratio-proportion.
Setup: (250 mg / 5 mL) = (500 mg / X mL)
Cross-multiply: 250X = 2,500
Solve: X = 2,500 ÷ 250 = 10 mL
Alternative dimensional analysis: (500 mg ÷ 250 mg) × 5 mL = 2 × 5 = 10 mL
4. A patient is to receive 1.2 L of IV fluid over 24 hours. How many milliliters (mL) is this?
Round to the nearest whole number.
____________ mL
Correct Answer: 1200 mL
Rationale: To convert liters to milliliters, multiply by 1,000 (move decimal 3 places right).
Calculation: 1.2 L × 1,000 = 1,200 mL
Rounding: Exact conversion = 1200 mL (no rounding needed)
5. The provider orders digoxin 125 mcg PO daily. The pharmacy sends digoxin elixir with a
concentration of 0.05 mg/mL. How many mL should the nurse administer?
A) 0.25 mL
B) 2.5 mL
C) 6.25 mL
D) 25 mL
Correct Answer: B) 2.5 mL
Rationale: Step 1: Convert ordered dose to same unit as available concentration.
125 mcg = 0.125 mg (mcg ÷ 1,000 = mg)
Step 2: Use formula D/H × V or dimensional analysis.
NUR2502 / NUR 2502 Dosage Calc Quiz
Week 1 ACTUAL EXAM 2026/2027 |
Multidimensional Care III (MDC 3) | Verified
Questions and Answers 100% Correct |
Rasmussen | Pass Guaranteed
Section I: Metric System Conversions & Basic Dimensional Analysis (Questions 1-5)
1. The provider orders fentanyl 75 mcg IV push. The medication reference states the dose may
also be written as _______ mg.
A) 0.075 mg
B) 0.75 mg
C) 7.5 mg
D) 750 mg
Correct Answer: A) 0.075 mg
Rationale: To convert micrograms (mcg) to milligrams (mg), divide by 1,000 (move decimal 3
places left).
Calculation: 75 mcg ÷ 1,000 = 0.075 mg
Formula: mcg → mg (smaller to larger unit = divide)
Rounding: Exact conversion, no rounding needed.
2. A patient weighs 182 lbs. Calculate the patient's weight in kilograms (kg). Round to the
nearest tenth.
____________ kg
Correct Answer: 82.7 kg
Rationale: To convert pounds to kilograms, divide by 2.2.
Calculation: 182 lbs ÷ 2.2 = 82.7272... kg
Rounding: Round to nearest tenth = 82.7 kg
Formula: lbs ÷ 2.2 = kg
, 2
3. The pharmacy supplies penicillin V potassium oral solution with a concentration of 250 mg/5
mL. The provider orders 0.5 g PO. How many mL should the nurse administer?
A) 1 mL
B) 5 mL
C) 10 mL
D) 25 mL
Correct Answer: C) 10 mL
Rationale: Step 1: Convert grams to milligrams. 0.5 g = 500 mg.
Step 2: Use dimensional analysis or ratio-proportion.
Setup: (250 mg / 5 mL) = (500 mg / X mL)
Cross-multiply: 250X = 2,500
Solve: X = 2,500 ÷ 250 = 10 mL
Alternative dimensional analysis: (500 mg ÷ 250 mg) × 5 mL = 2 × 5 = 10 mL
4. A patient is to receive 1.2 L of IV fluid over 24 hours. How many milliliters (mL) is this?
Round to the nearest whole number.
____________ mL
Correct Answer: 1200 mL
Rationale: To convert liters to milliliters, multiply by 1,000 (move decimal 3 places right).
Calculation: 1.2 L × 1,000 = 1,200 mL
Rounding: Exact conversion = 1200 mL (no rounding needed)
5. The provider orders digoxin 125 mcg PO daily. The pharmacy sends digoxin elixir with a
concentration of 0.05 mg/mL. How many mL should the nurse administer?
A) 0.25 mL
B) 2.5 mL
C) 6.25 mL
D) 25 mL
Correct Answer: B) 2.5 mL
Rationale: Step 1: Convert ordered dose to same unit as available concentration.
125 mcg = 0.125 mg (mcg ÷ 1,000 = mg)
Step 2: Use formula D/H × V or dimensional analysis.
