Latest Edition - Latest Edition Real Exam-Based Calculation Ques...

NCLEX Med Math Mastery | 2025/2026 Latest Edition Real Exam-Based Calculation Questions and Verified Answers | 100% Accuracy | Medication Dosage & IV Calculations | Graded A+ Introduction This resource includes 85 verified dosage calculation and medication math practice questions and correct answers tailored for the 2025/2026 NCLEX exam cycle. It focuses on essential med math competencies such as conversions, IV flow rates, dimensional analysis, ratio-proportion methods, and critical care dosing. Aligned with current NCLEX- RN/PN testing standards to ensure accurate and practical preparation.Answer Format All correct answers are clearly marked in bold and green to enhance review efficiency and build confidence in dosage calculations.

Questions

• A patient is prescribed 500 mg of amoxicillin to be taken every 8 hours.

The pharmacy provides 250 mg capsules. How many capsules should the patient take per dose?

• 1 capsule
• 2 capsules
• 3 capsules
• 4 capsules
• 2 capsules

Rationale: 500 mg ÷ 250 mg/capsule = 2 capsules per dose.

• A medication order calls for 1.5 g of cefazolin IV. The vial contains 500

mg/mL. How many mL should be administered?

• 1 mL
• 2 mL
• 3 mL 1 / 3

• 4 mL
• 3 mL

Rationale: 1.5 g = 1500 mg. 1500 mg ÷ 500 mg/mL = 3 mL.

• A patient is to receive 1000 mL of normal saline over 8 hours via IV.

The IV tubing has a drop factor of 15 gtt/mL. What is the flow rate in gtt/min?

• 31 gtt/min
• 42 gtt/min
• 50 gtt/min
• 62 gtt/min
• 31 gtt/min

Rationale: Total volume = 1000 mL, time = 8 hours = 480 minutes. Flow rate = 1000 mL ÷ 480 min = 2.083 mL/min. Drops/min = 2.083 mL/min × 15 gtt/mL ≈ 31 gtt/min.

• A patient is prescribed 25 mg of diphenhydramine IV. The vial is

labeled 50 mg/2 mL. How many mL should be administered?

• 0.5 mL
• 1 mL
• 1.5 mL
• 2 mL
• 1 mL

Rationale: 50 mg/2 mL = 25 mg/mL. 25 mg ÷ 25 mg/mL = 1 mL.

• A patient weighs 70 kg and is prescribed a medication at 5 mg/kg/day

in two divided doses. How many mg should the patient receive per dose?

• 175 mg
• 350 mg
• 700 mg
• 1400 mg
• 175 mg

Rationale: 70 kg × 5 mg/kg/day = 350 mg/day. 350 mg ÷ 2 doses = 175 mg/dose.

• A patient is to receive 500 mL of D5W over 4 hours. What is the IV

flow rate in mL/hr? 2 / 3

• 100 mL/hr
• 125 mL/hr
• 150 mL/hr
• 200 mL/hr
• 125 mL/hr

Rationale: 500 mL ÷ 4 hours = 125 mL/hr.

• A medication order is for 0.25 mg of digoxin IV. The vial contains 0.5

mg/2 mL. How many mL should be administered?

• 0.5 mL
• 1 mL
• 1.5 mL
• 2 mL
• 1 mL

Rationale: 0.5 mg/2 mL = 0.25 mg/mL. 0.25 mg ÷ 0.25 mg/mL = 1 mL.

• A patient is prescribed 10 units of regular insulin. The vial is labeled

100 units/mL. How many mL should be administered?

• 0.1 mL
• 0.2 mL
• 0.5 mL
• 1 mL
• 0.1 mL

Rationale: 10 units ÷ 100 units/mL = 0.1 mL.

• A patient is to receive 750 mL of LR over 6 hours. The IV tubing has a

drop factor of 10 gtt/mL. What is the flow rate in gtt/min?

• 21 gtt/min
• 25 gtt/min
• 30 gtt/min
• 42 gtt/min
• 21 gtt/min

Rationale: 750 mL ÷ 6 hours = 125 mL/hr. 125 mL/hr ÷ 60 min = 2.083 mL/min. 2.083 mL/min × 10 gtt/mL ≈ 21 gtt/min.

• / 3