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Dosage Calculations 2026 Comprehensive Exam
Bank 220 Multiple-Choice Questions Across All
Calculation Types with Expert Rationales
SECTION I: BASIC CONVERSIONS AND FUNDAMENTALS (Questions 1–25)
Metric and Household Conversions (Questions 1–15)
Question 1
The healthcare provider orders 500 mg of a medication. The medication is available in 250 mg
tablets. How many tablets should the nurse administer?
A) 0.5 tablets
B) 1 tablet
C) 2 tablets
D) 2.5 tablets
E) 3 tablets
CorreCt Answer: C
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Rationale: Desired dose = 500 mg. Available dose = 250 mg/tablet. Number of tablets = 500 mg
÷ 250 mg/tablet = 2 tablets.
Question 2
A patient is prescribed 0.5 g of a medication. The medication is available in 250 mg tablets. How
many tablets should the nurse administer?
A) 1 tablet
B) 2 tablets
C) 3 tablets
D) 4 tablets
E) 5 tablets
CorreCt Answer: B
Rationale: Convert 0.5 g to mg: 0.5 g × 1000 = 500 mg. Desired dose = 500 mg. Available dose =
250 mg/tablet. Number of tablets = 500 ÷ 250 = 2 tablets.
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Question 3
The healthcare provider orders 75 mg of a medication. The medication is available as a liquid
with a concentration of 25 mg/mL. How many mL should the nurse administer?
A) 1 mL
B) 2 mL
C) 3 mL
D) 4 mL
E) 5 mL
CorreCt Answer: C
Rationale: Desired dose = 75 mg. Concentration = 25 mg/mL. Volume = 75 mg ÷ 25 mg/mL = 3
mL.
Question 4
A patient is prescribed 1.5 L of intravenous fluids. How many mL is this equivalent to?
A) 150 mL
B) 1500 mL
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C) 15,000 mL
D) 150,000 mL
E) 1.5 mL
CorreCt Answer: B
Rationale: 1 L = 1000 mL. 1.5 L × 1000 = 1500 mL.
Question 5
The healthcare provider orders 0.25 mg of a medication. The medication is available in 0.125 mg
tablets. How many tablets should the nurse administer?
A) 0.5 tablets
B) 1 tablet
C) 2 tablets
D) 3 tablets
E) 4 tablets
CorreCt Answer: C
Dosage Calculations 2026 Comprehensive Exam
Bank 220 Multiple-Choice Questions Across All
Calculation Types with Expert Rationales
SECTION I: BASIC CONVERSIONS AND FUNDAMENTALS (Questions 1–25)
Metric and Household Conversions (Questions 1–15)
Question 1
The healthcare provider orders 500 mg of a medication. The medication is available in 250 mg
tablets. How many tablets should the nurse administer?
A) 0.5 tablets
B) 1 tablet
C) 2 tablets
D) 2.5 tablets
E) 3 tablets
CorreCt Answer: C
, 2
Rationale: Desired dose = 500 mg. Available dose = 250 mg/tablet. Number of tablets = 500 mg
÷ 250 mg/tablet = 2 tablets.
Question 2
A patient is prescribed 0.5 g of a medication. The medication is available in 250 mg tablets. How
many tablets should the nurse administer?
A) 1 tablet
B) 2 tablets
C) 3 tablets
D) 4 tablets
E) 5 tablets
CorreCt Answer: B
Rationale: Convert 0.5 g to mg: 0.5 g × 1000 = 500 mg. Desired dose = 500 mg. Available dose =
250 mg/tablet. Number of tablets = 500 ÷ 250 = 2 tablets.
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Question 3
The healthcare provider orders 75 mg of a medication. The medication is available as a liquid
with a concentration of 25 mg/mL. How many mL should the nurse administer?
A) 1 mL
B) 2 mL
C) 3 mL
D) 4 mL
E) 5 mL
CorreCt Answer: C
Rationale: Desired dose = 75 mg. Concentration = 25 mg/mL. Volume = 75 mg ÷ 25 mg/mL = 3
mL.
Question 4
A patient is prescribed 1.5 L of intravenous fluids. How many mL is this equivalent to?
A) 150 mL
B) 1500 mL
, 4
C) 15,000 mL
D) 150,000 mL
E) 1.5 mL
CorreCt Answer: B
Rationale: 1 L = 1000 mL. 1.5 L × 1000 = 1500 mL.
Question 5
The healthcare provider orders 0.25 mg of a medication. The medication is available in 0.125 mg
tablets. How many tablets should the nurse administer?
A) 0.5 tablets
B) 1 tablet
C) 2 tablets
D) 3 tablets
E) 4 tablets
CorreCt Answer: C
