PHARMACOLOGY DOSAGE CALCULATION EXAM QUESTIONS AND CORRECT ANSWERS
(VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A |STUDY GUIDE| INSTANT DOWNLOAD
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Core Domains
- Medication Dosage Calculations and Formulas
- IV Flow Rate and Infusion Calculations
- Weight-Based Dosage Calculations
- Pediatric and Neonatal Dosage Calculations
- Unit Conversions and Measurement Systems
- Regulatory Compliance and Medication Safety
- Ethics and Professional Standards in Medication Administration
- Clinical Decision-Making and Critical Thinking
Introduction
This comprehensive Pharmacology Dosage Calculation Exam is designed to assess nursing students' and
healthcare professionals' mastery of essential medication calculation skills required for safe clinical practice.
The exam evaluates proficiency in fundamental dosage formulas, IV flow rate calculations, weight-based dosing,
pediatric calculations, and unit conversions. Through multiple-choice and scenario-based questions, candidates
demonstrate their ability to apply mathematical concepts to real-world patient care situations. The assessment
emphasizes critical thinking, clinical decision-making, and adherence to regulatory standards that prevent
medication errors and ensure patient safety in diverse healthcare settings.
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,SECTION ONE: QUESTIONS 1–100
Question 1
The physician orders 375 mg of amoxicillin. Available is amoxicillin suspension with a concentration of 125
mg/5 mL. How many mL should the nurse administer?
A. 15 mL
B. 20 mL
C. 25 mL
D. 30 mL
🟢 A. 15 mL
🔴 RATIONALE: Using the formula: (Dose Ordered ÷ Dose on Hand) × Quantity = (375 mg ÷ 125 mg) × 5 mL
= 3 × 5 mL = 15 mL.
Question 2
The prescription is for 0.5 mg of digoxin. You have digoxin tablets of 0.25 mg each. How many tablets should
the nurse give?
A. 1 tablet
B. 2 tablets
C. 3 tablets
D. 4 tablets
🟢 B. 2 tablets
,🔴 RATIONALE: (0.5 mg ÷ 0.25 mg) × 1 tablet = 2 tablets.
Question 3
Order: Amoxicillin 0.25 g PO 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
🟢 B. 2 tablets
🔴 RATIONALE: First convert grams to milligrams: 0.25 g = 250 mg. Then: (250 mg ÷ 125 mg) × 1 tablet = 2
tablets.
Question 4
Order: Ceftriaxone 1 g IV every 24 hours. Vial contains 500 mg/5 mL. How many mL will you administer per
dose?
A. 5 mL
B. 10 mL
C. 15 mL
D. 20 mL
🟢 B. 10 mL
, 🔴 RATIONALE: Convert g to mg: 1 g = 1000 mg. (1000 mg ÷ 500 mg) × 5 mL = 2 × 5 mL = 10 mL.
Question 5
Order: Heparin 18 units/kg/hr for a patient weighing 70 kg. Available: 25,000 units in 500 mL D5W. What is
the infusion rate in mL/hr?
A. 20.5 mL/hr
B. 25.2 mL/hr
C. 30.8 mL/hr
D. 35.4 mL/hr
🟢 B. 25.2 mL/hr
🔴 RATIONALE: Dose = 18 × 70 = 1260 units/hr. Concentration = 25,000 ÷ 500 = 50 units/mL. Infusion rate
= 1260 ÷ 50 = 25.2 mL/hr.
Question 6
Pediatric: Amoxicillin 40 mg/kg/day in two divided doses. Child weighs 22 lb. Suspension: 250 mg/5 mL. How
many mL per dose?
A. 2 mL
B. 4 mL
C. 6 mL
D. 8 mL
🟢 B. 4 mL
(VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A |STUDY GUIDE| INSTANT DOWNLOAD
*
Core Domains
- Medication Dosage Calculations and Formulas
- IV Flow Rate and Infusion Calculations
- Weight-Based Dosage Calculations
- Pediatric and Neonatal Dosage Calculations
- Unit Conversions and Measurement Systems
- Regulatory Compliance and Medication Safety
- Ethics and Professional Standards in Medication Administration
- Clinical Decision-Making and Critical Thinking
Introduction
This comprehensive Pharmacology Dosage Calculation Exam is designed to assess nursing students' and
healthcare professionals' mastery of essential medication calculation skills required for safe clinical practice.
The exam evaluates proficiency in fundamental dosage formulas, IV flow rate calculations, weight-based dosing,
pediatric calculations, and unit conversions. Through multiple-choice and scenario-based questions, candidates
demonstrate their ability to apply mathematical concepts to real-world patient care situations. The assessment
emphasizes critical thinking, clinical decision-making, and adherence to regulatory standards that prevent
medication errors and ensure patient safety in diverse healthcare settings.
*
,SECTION ONE: QUESTIONS 1–100
Question 1
The physician orders 375 mg of amoxicillin. Available is amoxicillin suspension with a concentration of 125
mg/5 mL. How many mL should the nurse administer?
A. 15 mL
B. 20 mL
C. 25 mL
D. 30 mL
🟢 A. 15 mL
🔴 RATIONALE: Using the formula: (Dose Ordered ÷ Dose on Hand) × Quantity = (375 mg ÷ 125 mg) × 5 mL
= 3 × 5 mL = 15 mL.
Question 2
The prescription is for 0.5 mg of digoxin. You have digoxin tablets of 0.25 mg each. How many tablets should
the nurse give?
A. 1 tablet
B. 2 tablets
C. 3 tablets
D. 4 tablets
🟢 B. 2 tablets
,🔴 RATIONALE: (0.5 mg ÷ 0.25 mg) × 1 tablet = 2 tablets.
Question 3
Order: Amoxicillin 0.25 g PO 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
🟢 B. 2 tablets
🔴 RATIONALE: First convert grams to milligrams: 0.25 g = 250 mg. Then: (250 mg ÷ 125 mg) × 1 tablet = 2
tablets.
Question 4
Order: Ceftriaxone 1 g IV every 24 hours. Vial contains 500 mg/5 mL. How many mL will you administer per
dose?
A. 5 mL
B. 10 mL
C. 15 mL
D. 20 mL
🟢 B. 10 mL
, 🔴 RATIONALE: Convert g to mg: 1 g = 1000 mg. (1000 mg ÷ 500 mg) × 5 mL = 2 × 5 mL = 10 mL.
Question 5
Order: Heparin 18 units/kg/hr for a patient weighing 70 kg. Available: 25,000 units in 500 mL D5W. What is
the infusion rate in mL/hr?
A. 20.5 mL/hr
B. 25.2 mL/hr
C. 30.8 mL/hr
D. 35.4 mL/hr
🟢 B. 25.2 mL/hr
🔴 RATIONALE: Dose = 18 × 70 = 1260 units/hr. Concentration = 25,000 ÷ 500 = 50 units/mL. Infusion rate
= 1260 ÷ 50 = 25.2 mL/hr.
Question 6
Pediatric: Amoxicillin 40 mg/kg/day in two divided doses. Child weighs 22 lb. Suspension: 250 mg/5 mL. How
many mL per dose?
A. 2 mL
B. 4 mL
C. 6 mL
D. 8 mL
🟢 B. 4 mL
