Nursing 354 Dosage Calculation Practice
Exam Questions And Correct Answers
(Verified Answers) Plus Rationales 2026
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Question 1
The provider orders acetaminophen 650 mg PO. Available tablets are 325 mg
each. How many tablets should the nurse administer?
A. 1 tablet
B. 1.5 tablets
C. 2 tablets
D. 2.5 tablets
Answer: 2 tablets
Rationale: Divide the prescribed dose by the dose available: 650 mg ÷ 325 mg =
2 tablets.
Question 2
A patient is prescribed amoxicillin 500 mg PO. The medication is available as 250
mg capsules. How many capsules should the nurse administer?
A. 1 capsule
B. 2 capsules
,C. 3 capsules
D. 4 capsules
Answer: 2 capsules
Rationale: 500 mg ÷ 250 mg per capsule = 2 capsules.
Question 3
The nurse must administer 0.5 mg of a medication. The available concentration is
1 mg/mL. How many milliliters should the nurse administer?
A. 0.25 mL
B. 0.5 mL
C. 1 mL
D. 2 mL
Answer: 0.5 mL
Rationale: Use D/H × Q: 0.5 mg ÷ 1 mg × 1 mL = 0.5 mL.
Question 4
An order reads morphine 6 mg IV. The vial contains 10 mg/mL. How many
milliliters should the nurse administer?
A. 0.4 mL
B. 0.5 mL
C. 0.6 mL
D. 0.8 mL
Answer: 0.6 mL
Rationale: 6 mg ÷ 10 mg/mL = 0.6 mL.
Question 5
,A patient weighs 154 lb. What is the patient's weight in kilograms?
A. 60 kg
B. 65 kg
C. 70 kg
D. 75 kg
Answer: 70 kg
Rationale: Convert pounds to kilograms by dividing by 2.2: 154 ÷ 2.2 = 70 kg.
Question 6
The provider orders a medication at 5 mg/kg/day for a patient weighing 40 kg.
What total dose should the patient receive per day?
A. 100 mg/day
B. 150 mg/day
C. 200 mg/day
D. 250 mg/day
Answer: 200 mg/day
Rationale: 5 mg × 40 kg = 200 mg/day.
Question 7
A medication order is 800 mg PO. The medication is supplied as 400 mg tablets.
How many tablets should be administered?
A. 1 tablet
B. 1.5 tablets
C. 2 tablets
D. 3 tablets
Answer: 2 tablets
, Rationale: 800 mg ÷ 400 mg/tablet = 2 tablets.
Question 8
The nurse needs to administer 750 mg of a medication. The medication is
available as 250 mg/5 mL. How many milliliters should the nurse administer?
A. 10 mL
B. 12 mL
C. 15 mL
D. 20 mL
Answer: 15 mL
Rationale: 750 mg ÷ 250 mg × 5 mL = 15 mL.
Question 9
An IV infusion contains 1,000 mL of fluid to be infused over 8 hours. What rate
should the infusion pump be programmed to deliver?
A. 100 mL/hr
B. 110 mL/hr
C. 125 mL/hr
D. 150 mL/hr
Answer: 125 mL/hr
Rationale: 1,000 mL ÷ 8 hours = 125 mL/hr.
Question 10
An IV order requires 500 mL to infuse over 4 hours. What is the infusion rate?
A. 100 mL/hr
B. 125 mL/hr
Exam Questions And Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A Instant Download Pdf
Question 1
The provider orders acetaminophen 650 mg PO. Available tablets are 325 mg
each. How many tablets should the nurse administer?
A. 1 tablet
B. 1.5 tablets
C. 2 tablets
D. 2.5 tablets
Answer: 2 tablets
Rationale: Divide the prescribed dose by the dose available: 650 mg ÷ 325 mg =
2 tablets.
Question 2
A patient is prescribed amoxicillin 500 mg PO. The medication is available as 250
mg capsules. How many capsules should the nurse administer?
A. 1 capsule
B. 2 capsules
,C. 3 capsules
D. 4 capsules
Answer: 2 capsules
Rationale: 500 mg ÷ 250 mg per capsule = 2 capsules.
Question 3
The nurse must administer 0.5 mg of a medication. The available concentration is
1 mg/mL. How many milliliters should the nurse administer?
A. 0.25 mL
B. 0.5 mL
C. 1 mL
D. 2 mL
Answer: 0.5 mL
Rationale: Use D/H × Q: 0.5 mg ÷ 1 mg × 1 mL = 0.5 mL.
Question 4
An order reads morphine 6 mg IV. The vial contains 10 mg/mL. How many
milliliters should the nurse administer?
A. 0.4 mL
B. 0.5 mL
C. 0.6 mL
D. 0.8 mL
Answer: 0.6 mL
Rationale: 6 mg ÷ 10 mg/mL = 0.6 mL.
Question 5
,A patient weighs 154 lb. What is the patient's weight in kilograms?
A. 60 kg
B. 65 kg
C. 70 kg
D. 75 kg
Answer: 70 kg
Rationale: Convert pounds to kilograms by dividing by 2.2: 154 ÷ 2.2 = 70 kg.
Question 6
The provider orders a medication at 5 mg/kg/day for a patient weighing 40 kg.
What total dose should the patient receive per day?
A. 100 mg/day
B. 150 mg/day
C. 200 mg/day
D. 250 mg/day
Answer: 200 mg/day
Rationale: 5 mg × 40 kg = 200 mg/day.
Question 7
A medication order is 800 mg PO. The medication is supplied as 400 mg tablets.
How many tablets should be administered?
A. 1 tablet
B. 1.5 tablets
C. 2 tablets
D. 3 tablets
Answer: 2 tablets
, Rationale: 800 mg ÷ 400 mg/tablet = 2 tablets.
Question 8
The nurse needs to administer 750 mg of a medication. The medication is
available as 250 mg/5 mL. How many milliliters should the nurse administer?
A. 10 mL
B. 12 mL
C. 15 mL
D. 20 mL
Answer: 15 mL
Rationale: 750 mg ÷ 250 mg × 5 mL = 15 mL.
Question 9
An IV infusion contains 1,000 mL of fluid to be infused over 8 hours. What rate
should the infusion pump be programmed to deliver?
A. 100 mL/hr
B. 110 mL/hr
C. 125 mL/hr
D. 150 mL/hr
Answer: 125 mL/hr
Rationale: 1,000 mL ÷ 8 hours = 125 mL/hr.
Question 10
An IV order requires 500 mL to infuse over 4 hours. What is the infusion rate?
A. 100 mL/hr
B. 125 mL/hr
