BSN HESI 215 – Dosage Calculations Exam V3 Questions
and Answers with Rationales 2026/2027 Update -
Nightingale College
Directions
Select the one best answer.
Use 1 kg = 2.2 lb.
Use 1 g = 1,000 mg.
Use 1 mg = 1,000 mcg.
Use 1 L = 1,000 mL.
Use 1 tsp = 5 mL and 1 tbsp = 15 mL.
Round IV gravity rates to the nearest whole gtt/min.
Round medication volumes to the nearest tenth when appropriate.
For pediatric and weight-based problems, calculate the patient's weight in kilograms
before calculating the dose.
Questions 1–25: Metric Conversions and Basic Dosage
1.
The provider orders 750 mg of a medication. Available tablets contain
250 mg each. How many tablets should the nurse administer?
A. 1
B. 2
C. 3
D. 4
Answer: C. 3 tablets
Rationale: 750 mg ÷ 250 mg/tablet = 3 tablets.
,2.
Convert 2.4 g to milligrams.
A. 24 mg
B. 240 mg
C. 2,400 mg
D. 24,000 mg
Answer: C. 2,400 mg
Rationale: 2.4 g × 1,000 mg/g = 2,400 mg.
3.
Convert 3,500 mcg to milligrams.
A. 0.35 mg
B. 3.5 mg
C. 35 mg
D. 350 mg
Answer: B. 3.5 mg
Rationale: 3,500 mcg ÷ 1,000 = 3.5 mg.
4.
The order is for 0.6 mg. Available tablets contain 300 mcg. How many
tablets are needed?
A. 0.5
B. 1
C. 2
D. 3
Answer: C. 2 tablets
Rationale: 0.6 mg = 600 mcg. 600 ÷ 300 = 2 tablets.
,5.
Convert 0.025 g to milligrams.
A. 2.5 mg
B. 25 mg
C. 250 mg
D. 2,500 mg
Answer: B. 25 mg
Rationale: 0.025 × 1,000 = 25 mg.
6.
Convert 4,000 mL to liters.
A. 0.4 L
B. 4 L
C. 40 L
D. 400 L
Answer: B. 4 L
Rationale: 4,000 ÷ 1,000 = 4 L.
7.
A medication order is 1.2 g. Available: 400 mg tablets. How many
tablets should be administered?
A. 1
B. 2
C. 3
D. 4
Answer: C. 3 tablets
Rationale: 1.2 g = 1,200 mg. 1,200 ÷ 400 = 3 tablets.
, 8.
The prescription is 80 mg. Available: 40 mg/2 mL. How many milliliters
are required?
A. 2 mL
B. 3 mL
C. 4 mL
D. 8 mL
Answer: C. 4 mL
Rationale: 40 mg is in 2 mL, so 80 mg is in 4 mL.
9.
Convert 0.125 mg to micrograms.
A. 12.5 mcg
B. 125 mcg
C. 1,250 mcg
D. 12,500 mcg
Answer: B. 125 mcg
Rationale: 0.125 × 1,000 = 125 mcg.
10.
A medication is supplied as 0.5 mg/mL. The order is 1.5 mg. What
volume should be given?
A. 1 mL
B. 2 mL
C. 3 mL
D. 4 mL
Answer: C. 3 mL
and Answers with Rationales 2026/2027 Update -
Nightingale College
Directions
Select the one best answer.
Use 1 kg = 2.2 lb.
Use 1 g = 1,000 mg.
Use 1 mg = 1,000 mcg.
Use 1 L = 1,000 mL.
Use 1 tsp = 5 mL and 1 tbsp = 15 mL.
Round IV gravity rates to the nearest whole gtt/min.
Round medication volumes to the nearest tenth when appropriate.
For pediatric and weight-based problems, calculate the patient's weight in kilograms
before calculating the dose.
Questions 1–25: Metric Conversions and Basic Dosage
1.
The provider orders 750 mg of a medication. Available tablets contain
250 mg each. How many tablets should the nurse administer?
A. 1
B. 2
C. 3
D. 4
Answer: C. 3 tablets
Rationale: 750 mg ÷ 250 mg/tablet = 3 tablets.
,2.
Convert 2.4 g to milligrams.
A. 24 mg
B. 240 mg
C. 2,400 mg
D. 24,000 mg
Answer: C. 2,400 mg
Rationale: 2.4 g × 1,000 mg/g = 2,400 mg.
3.
Convert 3,500 mcg to milligrams.
A. 0.35 mg
B. 3.5 mg
C. 35 mg
D. 350 mg
Answer: B. 3.5 mg
Rationale: 3,500 mcg ÷ 1,000 = 3.5 mg.
4.
The order is for 0.6 mg. Available tablets contain 300 mcg. How many
tablets are needed?
A. 0.5
B. 1
C. 2
D. 3
Answer: C. 2 tablets
Rationale: 0.6 mg = 600 mcg. 600 ÷ 300 = 2 tablets.
,5.
Convert 0.025 g to milligrams.
A. 2.5 mg
B. 25 mg
C. 250 mg
D. 2,500 mg
Answer: B. 25 mg
Rationale: 0.025 × 1,000 = 25 mg.
6.
Convert 4,000 mL to liters.
A. 0.4 L
B. 4 L
C. 40 L
D. 400 L
Answer: B. 4 L
Rationale: 4,000 ÷ 1,000 = 4 L.
7.
A medication order is 1.2 g. Available: 400 mg tablets. How many
tablets should be administered?
A. 1
B. 2
C. 3
D. 4
Answer: C. 3 tablets
Rationale: 1.2 g = 1,200 mg. 1,200 ÷ 400 = 3 tablets.
, 8.
The prescription is 80 mg. Available: 40 mg/2 mL. How many milliliters
are required?
A. 2 mL
B. 3 mL
C. 4 mL
D. 8 mL
Answer: C. 4 mL
Rationale: 40 mg is in 2 mL, so 80 mg is in 4 mL.
9.
Convert 0.125 mg to micrograms.
A. 12.5 mcg
B. 125 mcg
C. 1,250 mcg
D. 12,500 mcg
Answer: B. 125 mcg
Rationale: 0.125 × 1,000 = 125 mcg.
10.
A medication is supplied as 0.5 mg/mL. The order is 1.5 mg. What
volume should be given?
A. 1 mL
B. 2 mL
C. 3 mL
D. 4 mL
Answer: C. 3 mL
