HESI A2 Math – 2025 Full
Exam Practice With Correct
Answers | Score Boost
Question 1
A nurse needs to administer 500 mg of a medication. The available concentration
is 250 mg/5 mL. How many milliliters should the nurse administer? (Round to the
nearest tenth.)
A. 5 mL B. 10 mL C. 2.5 mL D. 12.5 mL
B. 10 mL
Rationale: Step 1: Determine the dose in mg/mL: 250 mg / 5 mL = 50 mg/mL.
Step 2: Calculate volume needed: 500 mg / 50 mg/mL = 10 mL. This dosage
calculation ensures accurate medication delivery per HESI standards for safe
administration.
Question 2
Convert 2.5 liters to milliliters.
A. 250 mL B. 2,500 mL C. 25 mL D. 25,000 mL
B. 2,500 mL
Rationale: Step 1: Recall the conversion: 1 liter = 1,000 mL. Step 2: Multiply: 2.5
× 1,000 = 2,500 mL. Unit conversions are essential in nursing for fluid balance and
medication preparation.
Question 3
A patient's weight is 150 pounds. Convert this to kilograms (1 kg = 2.2 pounds).
Round to the nearest whole number.
, A. 68 kg B. 330 kg C. 75 kg D. 30 kg
A. 68 kg
Rationale: Step 1: Divide pounds by 2.2: .2 = 68.18 kg. Step 2: Round to
68 kg. Accurate weight conversion is critical for dosing medications based on body
weight in clinical practice.
Question 4
Calculate 15% of 240 mL.
A. 36 mL B. 24 mL C. 48 mL D. 15 mL
A. 36 mL
Rationale: Step 1: Convert percentage to decimal: 15% = 0.15. Step 2: Multiply:
0.15 × 240 = 36 mL. Percentages are used in nursing for solution concentrations
and IV fluid adjustments.
Question 5
An IV bag contains 1,000 mL to infuse over 8 hours. What is the flow rate in
mL/hour?
A. 125 mL/hour B. 100 mL/hour C. 150 mL/hour D. 200 mL/hour
A. 125 mL/hour
Rationale: Step 1: Divide total volume by time: 1,000 mL / 8 hours = 125
mL/hour. Step 2: Verify units. IV flow rate calculations ensure proper hydration
and medication delivery.
Question 6
Solve for x: 3x + 5 = 20.
A. 5 B. 15 C. 25 D. 8
A. 5
Exam Practice With Correct
Answers | Score Boost
Question 1
A nurse needs to administer 500 mg of a medication. The available concentration
is 250 mg/5 mL. How many milliliters should the nurse administer? (Round to the
nearest tenth.)
A. 5 mL B. 10 mL C. 2.5 mL D. 12.5 mL
B. 10 mL
Rationale: Step 1: Determine the dose in mg/mL: 250 mg / 5 mL = 50 mg/mL.
Step 2: Calculate volume needed: 500 mg / 50 mg/mL = 10 mL. This dosage
calculation ensures accurate medication delivery per HESI standards for safe
administration.
Question 2
Convert 2.5 liters to milliliters.
A. 250 mL B. 2,500 mL C. 25 mL D. 25,000 mL
B. 2,500 mL
Rationale: Step 1: Recall the conversion: 1 liter = 1,000 mL. Step 2: Multiply: 2.5
× 1,000 = 2,500 mL. Unit conversions are essential in nursing for fluid balance and
medication preparation.
Question 3
A patient's weight is 150 pounds. Convert this to kilograms (1 kg = 2.2 pounds).
Round to the nearest whole number.
, A. 68 kg B. 330 kg C. 75 kg D. 30 kg
A. 68 kg
Rationale: Step 1: Divide pounds by 2.2: .2 = 68.18 kg. Step 2: Round to
68 kg. Accurate weight conversion is critical for dosing medications based on body
weight in clinical practice.
Question 4
Calculate 15% of 240 mL.
A. 36 mL B. 24 mL C. 48 mL D. 15 mL
A. 36 mL
Rationale: Step 1: Convert percentage to decimal: 15% = 0.15. Step 2: Multiply:
0.15 × 240 = 36 mL. Percentages are used in nursing for solution concentrations
and IV fluid adjustments.
Question 5
An IV bag contains 1,000 mL to infuse over 8 hours. What is the flow rate in
mL/hour?
A. 125 mL/hour B. 100 mL/hour C. 150 mL/hour D. 200 mL/hour
A. 125 mL/hour
Rationale: Step 1: Divide total volume by time: 1,000 mL / 8 hours = 125
mL/hour. Step 2: Verify units. IV flow rate calculations ensure proper hydration
and medication delivery.
Question 6
Solve for x: 3x + 5 = 20.
A. 5 B. 15 C. 25 D. 8
A. 5
