NUR 103 DOSAGE CALCULATION EXAM 1 BASIC MEDICATION MATH QUESTIONS AND
CORRECT ANSWERS (VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A |STUDY GUIDE|
INSTANT DOWNLOAD PDF
Core Domains
*- Dosage Calculation Formulas and Methods*
*- Metric System Conversions and Unit Transformations*
*- Oral Medication Dosage Calculations*
*- Intravenous (IV) Flow Rate and Infusion Time Calculations*
*- Pediatric and Weight-Based Dosage Calculations*
*- Parenteral and Injectable Medication Dosing*
*- Medication Safety and Regulatory Compliance*
*- Clinical Decision-Making in Medication Administration*
Introduction
This exam assesses fundamental medication math competencies essential for safe nursing practice.
Candidates will demonstrate proficiency in dosage calculations, unit conversions, IV flow rates, and weight-
based dosing through multiple-choice and scenario-based questions. The assessment emphasizes real-world
clinical application, critical thinking, and professional decision-making when administering medications.
Mastery of these skills ensures accurate medication administration, prevents dosing errors, and safeguards
patient safety across diverse healthcare settings. This test bank covers foundational theory, applied
knowledge, regulatory compliance, ethics, and critical thinking necessary for nursing excellence.
SECTION ONE: QUESTIONS 1–100
,Question 1
The doctor orders 500 mg of amoxicillin. Available is amoxicillin suspension labeled 250 mg/5 mL. How many
mL should the nurse administer?
A. 5 mL
B. 7.5 mL
C. 10 mL
D. 12.5 mL
🟢 Correct answer: C
🔴 RATIONALE: Use the formula: Desired ÷ Have × Quantity = (500 mg ÷ 250 mg) × 5 mL = 2 × 5 mL = 10
mL. This calculation ensures the patient receives the exact ordered dose.
Question 2
Order: Amoxicillin 0.25 g p.o. every 8 hours. Available: Amoxicillin 125 mg tablets. How many tablets will the
nurse give per dose?
A. 1 tablet
B. 2 tablets
C. 3 tablets
D. 4 tablets
🟢 Correct answer: B
,🔴 RATIONALE: First convert 0.25 g to mg: 0.25 g × 1000 = 250 mg. Then calculate: (250 mg ÷ 125 mg/tablet)
= 2 tablets per dose. Unit conversion is critical before calculating.
Question 3
The prescription is for 0.5 mg of digoxin. Available is digoxin 250 μg/mL. How many mL should the nurse
administer?
A. 0.5 mL
B. 1 mL
C. 1.5 mL
D. 2 mL
🟢 Correct answer: B
🔴 RATIONALE: Convert 0.5 mg to μg: 0.5 mg × 1000 = 500 μg. Then calculate: (500 μg ÷ 250 μg/mL) = 2
mL. Wait, let me recalculate: (500 μg ÷ 250 μg/mL) = 2 mL. The correct answer is actually D.
🟢 Correct answer: D
🔴 RATIONALE: Convert 0.5 mg to μg: 0.5 mg × 1000 = 500 μg. Then calculate: (500 μg ÷ 250 μg/mL) = 2
mL. Correct dosage administration requires accurate unit conversion.
Question 4
A patient needs 750 mg of vancomycin IV. The vial is labeled 500 mg/10 mL. How many mL should the nurse
prepare?
, A. 10 mL
B. 12 mL
C. 15 mL
D. 20 mL
🟢 Correct answer: C
🔴 RATIONALE: Use the formula: (Desired ÷ Have) × Quantity = (750 mg ÷ 500 mg) × 10 mL = 1.5 × 10 mL =
15 mL. Accurate IV preparation prevents under/over dosing.
Question 5
Order: Morphine gr 1/10. Available: Morphine 10 mg/mL. How many mL will the nurse give?
A. 0.5 mL
B. 0.6 mL
C. 1 mL
D. 1.5 mL
🟢 Correct answer: B
🔴 RATIONALE: Convert grains to mg: 1 gr = 60 mg, so 1/10 gr = 6 mg. Then calculate: (6 mg ÷ 10 mg/mL) =
0.6 mL. Grain-to-mg conversion is essential for opioid dosing.
Question 6
The doctor orders 1 g of acetaminophen. Available is 500 mg tablets. How many tablets should the nurse
administer?
CORRECT ANSWERS (VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A |STUDY GUIDE|
INSTANT DOWNLOAD PDF
Core Domains
*- Dosage Calculation Formulas and Methods*
*- Metric System Conversions and Unit Transformations*
*- Oral Medication Dosage Calculations*
*- Intravenous (IV) Flow Rate and Infusion Time Calculations*
*- Pediatric and Weight-Based Dosage Calculations*
*- Parenteral and Injectable Medication Dosing*
*- Medication Safety and Regulatory Compliance*
*- Clinical Decision-Making in Medication Administration*
Introduction
This exam assesses fundamental medication math competencies essential for safe nursing practice.
Candidates will demonstrate proficiency in dosage calculations, unit conversions, IV flow rates, and weight-
based dosing through multiple-choice and scenario-based questions. The assessment emphasizes real-world
clinical application, critical thinking, and professional decision-making when administering medications.
Mastery of these skills ensures accurate medication administration, prevents dosing errors, and safeguards
patient safety across diverse healthcare settings. This test bank covers foundational theory, applied
knowledge, regulatory compliance, ethics, and critical thinking necessary for nursing excellence.
SECTION ONE: QUESTIONS 1–100
,Question 1
The doctor orders 500 mg of amoxicillin. Available is amoxicillin suspension labeled 250 mg/5 mL. How many
mL should the nurse administer?
A. 5 mL
B. 7.5 mL
C. 10 mL
D. 12.5 mL
🟢 Correct answer: C
🔴 RATIONALE: Use the formula: Desired ÷ Have × Quantity = (500 mg ÷ 250 mg) × 5 mL = 2 × 5 mL = 10
mL. This calculation ensures the patient receives the exact ordered dose.
Question 2
Order: Amoxicillin 0.25 g p.o. every 8 hours. Available: Amoxicillin 125 mg tablets. How many tablets will the
nurse give per dose?
A. 1 tablet
B. 2 tablets
C. 3 tablets
D. 4 tablets
🟢 Correct answer: B
,🔴 RATIONALE: First convert 0.25 g to mg: 0.25 g × 1000 = 250 mg. Then calculate: (250 mg ÷ 125 mg/tablet)
= 2 tablets per dose. Unit conversion is critical before calculating.
Question 3
The prescription is for 0.5 mg of digoxin. Available is digoxin 250 μg/mL. How many mL should the nurse
administer?
A. 0.5 mL
B. 1 mL
C. 1.5 mL
D. 2 mL
🟢 Correct answer: B
🔴 RATIONALE: Convert 0.5 mg to μg: 0.5 mg × 1000 = 500 μg. Then calculate: (500 μg ÷ 250 μg/mL) = 2
mL. Wait, let me recalculate: (500 μg ÷ 250 μg/mL) = 2 mL. The correct answer is actually D.
🟢 Correct answer: D
🔴 RATIONALE: Convert 0.5 mg to μg: 0.5 mg × 1000 = 500 μg. Then calculate: (500 μg ÷ 250 μg/mL) = 2
mL. Correct dosage administration requires accurate unit conversion.
Question 4
A patient needs 750 mg of vancomycin IV. The vial is labeled 500 mg/10 mL. How many mL should the nurse
prepare?
, A. 10 mL
B. 12 mL
C. 15 mL
D. 20 mL
🟢 Correct answer: C
🔴 RATIONALE: Use the formula: (Desired ÷ Have) × Quantity = (750 mg ÷ 500 mg) × 10 mL = 1.5 × 10 mL =
15 mL. Accurate IV preparation prevents under/over dosing.
Question 5
Order: Morphine gr 1/10. Available: Morphine 10 mg/mL. How many mL will the nurse give?
A. 0.5 mL
B. 0.6 mL
C. 1 mL
D. 1.5 mL
🟢 Correct answer: B
🔴 RATIONALE: Convert grains to mg: 1 gr = 60 mg, so 1/10 gr = 6 mg. Then calculate: (6 mg ÷ 10 mg/mL) =
0.6 mL. Grain-to-mg conversion is essential for opioid dosing.
Question 6
The doctor orders 1 g of acetaminophen. Available is 500 mg tablets. How many tablets should the nurse
administer?
