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NUR 2502 MDC3 Exam 1 –
Rasmussen College 2025 – 50 Verified
Questions with Answers and
Rationales
Dosage Calculations
1. A patient is prescribed 500 mg of a medication available as 250 mg/5 mL. How
many mL should the nurse administer?
A. 5 mL
B. 10 mL
C. 15 mL
D. 20 mL
B. 10 mL
Rationale: Calculate: (500 mg ÷ 250 mg) × 5 mL = 2 × 5 = 10 mL.
2. A patient is ordered 2 g of a medication. The drug is available as 500 mg tablets.
How many tablets should be given?
A. 2 tablets
B. 3 tablets
C. 4 tablets
D. 5 tablets
C. 4 tablets
Rationale: Convert 2 g to 2000 mg, then divide: 2000 mg ÷ 500 mg/tablet = 4 tablets.
3. A patient receives 1000 mL of IV fluid over 8 hours. What is the flow rate in
mL/hour?
A. 100 mL/hour
B. 125 mL/hour
C. 150 mL/hour
D. 175 mL/hour
B. 125 mL/hour
Rationale: Divide total volume by time: 1000 mL ÷ 8 hours = 125 mL/hour.
4. A medication is prescribed at 0.5 mg/kg. The patient weighs 70 kg. How many mg
should be administered?
A. 30 mg
B. 35 mg
C. 40 mg
D. 45 mg
B. 35 mg
Rationale: Calculate: 0.5 mg/kg × 70 kg = 35 mg.
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5. A patient is prescribed 25 mg of a drug available as 10 mg/mL. How many mL
should the nurse administer?
A. 1.5 mL
B. 2 mL
C. 2.5 mL
D. 3 mL
C. 2.5 mL
Rationale: Calculate: 25 mg ÷ 10 mg/mL = 2.5 mL.
6. An IV infusion is set at 150 mL/hour. How many mL will be infused in 4 hours?
A. 500 mL
B. 600 mL
C. 700 mL
D. 800 mL
B. 600 mL
Rationale: Multiply rate by time: 150 mL/hour × 4 hours = 600 mL.
7. A patient is prescribed 0.25 mg of digoxin. The drug is available as 0.125 mg tablets.
How many tablets should be given?
A. 1 tablet
B. 2 tablets
C. 3 tablets
D. 4 tablets
B. 2 tablets
Rationale: Calculate: 0.25 mg ÷ 0.125 mg/tablet = 2 tablets.
8. A patient receives 500 mL of IV fluid over 5 hours. What is the flow rate in
mL/hour?
A. 80 mL/hour
B. 90 mL/hour
C. 100 mL/hour
D. 110 mL/hour
C. 100 mL/hour
Rationale: Divide: 500 mL ÷ 5 hours = 100 mL/hour.
9. A medication is prescribed at 2 mg/kg. The patient weighs 60 kg. How many mg
should be administered?
A. 100 mg
B. 110 mg
C. 120 mg
D. 130 mg
C. 120 mg
Rationale: Calculate: 2 mg/kg × 60 kg = 120 mg.
10. A drug is available as 50 mg/2 mL. The nurse needs to administer 75 mg. How many
mL should be given?
A. 2 mL
B. 3 mL
C. 4 mL
D. 5 mL
NUR 2502 MDC3 Exam 1 –
Rasmussen College 2025 – 50 Verified
Questions with Answers and
Rationales
Dosage Calculations
1. A patient is prescribed 500 mg of a medication available as 250 mg/5 mL. How
many mL should the nurse administer?
A. 5 mL
B. 10 mL
C. 15 mL
D. 20 mL
B. 10 mL
Rationale: Calculate: (500 mg ÷ 250 mg) × 5 mL = 2 × 5 = 10 mL.
2. A patient is ordered 2 g of a medication. The drug is available as 500 mg tablets.
How many tablets should be given?
A. 2 tablets
B. 3 tablets
C. 4 tablets
D. 5 tablets
C. 4 tablets
Rationale: Convert 2 g to 2000 mg, then divide: 2000 mg ÷ 500 mg/tablet = 4 tablets.
3. A patient receives 1000 mL of IV fluid over 8 hours. What is the flow rate in
mL/hour?
A. 100 mL/hour
B. 125 mL/hour
C. 150 mL/hour
D. 175 mL/hour
B. 125 mL/hour
Rationale: Divide total volume by time: 1000 mL ÷ 8 hours = 125 mL/hour.
4. A medication is prescribed at 0.5 mg/kg. The patient weighs 70 kg. How many mg
should be administered?
A. 30 mg
B. 35 mg
C. 40 mg
D. 45 mg
B. 35 mg
Rationale: Calculate: 0.5 mg/kg × 70 kg = 35 mg.
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5. A patient is prescribed 25 mg of a drug available as 10 mg/mL. How many mL
should the nurse administer?
A. 1.5 mL
B. 2 mL
C. 2.5 mL
D. 3 mL
C. 2.5 mL
Rationale: Calculate: 25 mg ÷ 10 mg/mL = 2.5 mL.
6. An IV infusion is set at 150 mL/hour. How many mL will be infused in 4 hours?
A. 500 mL
B. 600 mL
C. 700 mL
D. 800 mL
B. 600 mL
Rationale: Multiply rate by time: 150 mL/hour × 4 hours = 600 mL.
7. A patient is prescribed 0.25 mg of digoxin. The drug is available as 0.125 mg tablets.
How many tablets should be given?
A. 1 tablet
B. 2 tablets
C. 3 tablets
D. 4 tablets
B. 2 tablets
Rationale: Calculate: 0.25 mg ÷ 0.125 mg/tablet = 2 tablets.
8. A patient receives 500 mL of IV fluid over 5 hours. What is the flow rate in
mL/hour?
A. 80 mL/hour
B. 90 mL/hour
C. 100 mL/hour
D. 110 mL/hour
C. 100 mL/hour
Rationale: Divide: 500 mL ÷ 5 hours = 100 mL/hour.
9. A medication is prescribed at 2 mg/kg. The patient weighs 60 kg. How many mg
should be administered?
A. 100 mg
B. 110 mg
C. 120 mg
D. 130 mg
C. 120 mg
Rationale: Calculate: 2 mg/kg × 60 kg = 120 mg.
10. A drug is available as 50 mg/2 mL. The nurse needs to administer 75 mg. How many
mL should be given?
A. 2 mL
B. 3 mL
C. 4 mL
D. 5 mL
