BSN HESI 215 – Dosage Calculations Exam V2 Questions
and Answers with Rationales 2026/2027 Update -
Nightingale College
Instructions
Select the one best answer unless otherwise stated.
Use 2.2 lb = 1 kg unless another conversion is specified.
Use 1 tsp = 5 mL, 1 tbsp = 15 mL, and 1 fl oz = 30 mL.
Round IV flow rates in gtt/min to the nearest whole number.
Round medication volumes to the nearest tenth when appropriate.
For weight-based continuous infusions, show units throughout the
calculation.
Always verify whether a medication dose is within the prescribed safe
range before administration.
Section 1 — Basic Metric Conversions and Dosage Fundamentals
1.
The provider orders 1.25 g of a medication. The pharmacy supplies 500
mg tablets. How many tablets should the nurse administer?
A. 1.5 tablets
B. 2 tablets
C. 2.5 tablets
D. 3 tablets
Answer: C. 2.5 tablets
Rationale: Convert 1.25 g to 1,250 mg. Then 1,250 mg ÷ 500 mg/tablet
= 2.5 tablets.
,2.
Convert 0.75 g to milligrams.
A. 75 mg
B. 750 mg
C. 7,500 mg
D. 0.075 mg
Answer: B. 750 mg
Rationale: 1 g = 1,000 mg. Therefore, 0.75 × 1,000 = 750 mg.
3.
Convert 2,500 mcg to milligrams.
A. 0.25 mg
B. 2.5 mg
C. 25 mg
D. 250 mg
Answer: B. 2.5 mg
Rationale: 1 mg = 1,000 mcg. Therefore, 2,500 ÷ 1,000 = 2.5 mg.
4.
The nurse needs to administer 0.4 mg. The medication is available as
200 mcg tablets. How many tablets are required?
A. 0.5 tablet
B. 1 tablet
C. 2 tablets
D. 4 tablets
Answer: C. 2 tablets
Rationale: 0.4 mg = 400 mcg. 400 mcg ÷ 200 mcg/tablet = 2 tablets.
,5.
Convert 3.2 L to milliliters.
A. 32 mL
B. 320 mL
C. 3,200 mL
D. 32,000 mL
Answer: C. 3,200 mL
Rationale: 1 L = 1,000 mL. Therefore, 3.2 × 1,000 = 3,200 mL.
6.
Convert 450 mL to liters.
A. 0.045 L
B. 0.45 L
C. 4.5 L
D. 45 L
Answer: B. 0.45 L
Rationale: 450 ÷ 1,000 = 0.45 L.
7.
A prescription reads 0.08 g. How many milligrams is this?
A. 8 mg
B. 80 mg
C. 800 mg
D. 0.8 mg
Answer: B. 80 mg
Rationale: 0.08 g × 1,000 mg/g = 80 mg.
8.
, A medication order is 2,000 units. The vial contains 10,000 units/mL.
How many milliliters should be administered?
A. 0.02 mL
B. 0.2 mL
C. 2 mL
D. 5 mL
Answer: B. 0.2 mL
Rationale: 2,000 units ÷ 10,000 units/mL = 0.2 mL.
9.
The provider orders 1,500 mg. The medication is supplied as 750 mg
per tablet. How many tablets should be administered?
A. 0.5
B. 1
C. 2
D. 3
Answer: C. 2 tablets
Rationale: 1,500 ÷ 750 = 2 tablets.
10.
A medication is ordered at 0.125 mg. The available tablets contain 125
mcg. How many tablets should the nurse give?
A. 0.1 tablet
B. 0.5 tablet
C. 1 tablet
D. 2 tablets
Answer: C. 1 tablet
and Answers with Rationales 2026/2027 Update -
Nightingale College
Instructions
Select the one best answer unless otherwise stated.
Use 2.2 lb = 1 kg unless another conversion is specified.
Use 1 tsp = 5 mL, 1 tbsp = 15 mL, and 1 fl oz = 30 mL.
Round IV flow rates in gtt/min to the nearest whole number.
Round medication volumes to the nearest tenth when appropriate.
For weight-based continuous infusions, show units throughout the
calculation.
Always verify whether a medication dose is within the prescribed safe
range before administration.
Section 1 — Basic Metric Conversions and Dosage Fundamentals
1.
The provider orders 1.25 g of a medication. The pharmacy supplies 500
mg tablets. How many tablets should the nurse administer?
A. 1.5 tablets
B. 2 tablets
C. 2.5 tablets
D. 3 tablets
Answer: C. 2.5 tablets
Rationale: Convert 1.25 g to 1,250 mg. Then 1,250 mg ÷ 500 mg/tablet
= 2.5 tablets.
,2.
Convert 0.75 g to milligrams.
A. 75 mg
B. 750 mg
C. 7,500 mg
D. 0.075 mg
Answer: B. 750 mg
Rationale: 1 g = 1,000 mg. Therefore, 0.75 × 1,000 = 750 mg.
3.
Convert 2,500 mcg to milligrams.
A. 0.25 mg
B. 2.5 mg
C. 25 mg
D. 250 mg
Answer: B. 2.5 mg
Rationale: 1 mg = 1,000 mcg. Therefore, 2,500 ÷ 1,000 = 2.5 mg.
4.
The nurse needs to administer 0.4 mg. The medication is available as
200 mcg tablets. How many tablets are required?
A. 0.5 tablet
B. 1 tablet
C. 2 tablets
D. 4 tablets
Answer: C. 2 tablets
Rationale: 0.4 mg = 400 mcg. 400 mcg ÷ 200 mcg/tablet = 2 tablets.
,5.
Convert 3.2 L to milliliters.
A. 32 mL
B. 320 mL
C. 3,200 mL
D. 32,000 mL
Answer: C. 3,200 mL
Rationale: 1 L = 1,000 mL. Therefore, 3.2 × 1,000 = 3,200 mL.
6.
Convert 450 mL to liters.
A. 0.045 L
B. 0.45 L
C. 4.5 L
D. 45 L
Answer: B. 0.45 L
Rationale: 450 ÷ 1,000 = 0.45 L.
7.
A prescription reads 0.08 g. How many milligrams is this?
A. 8 mg
B. 80 mg
C. 800 mg
D. 0.8 mg
Answer: B. 80 mg
Rationale: 0.08 g × 1,000 mg/g = 80 mg.
8.
, A medication order is 2,000 units. The vial contains 10,000 units/mL.
How many milliliters should be administered?
A. 0.02 mL
B. 0.2 mL
C. 2 mL
D. 5 mL
Answer: B. 0.2 mL
Rationale: 2,000 units ÷ 10,000 units/mL = 0.2 mL.
9.
The provider orders 1,500 mg. The medication is supplied as 750 mg
per tablet. How many tablets should be administered?
A. 0.5
B. 1
C. 2
D. 3
Answer: C. 2 tablets
Rationale: 1,500 ÷ 750 = 2 tablets.
10.
A medication is ordered at 0.125 mg. The available tablets contain 125
mcg. How many tablets should the nurse give?
A. 0.1 tablet
B. 0.5 tablet
C. 1 tablet
D. 2 tablets
Answer: C. 1 tablet
