BSN 215 HESI RN Specialty Dosage Calculation Exam
(Latest Update ) Questions and Verified
Answers |100% Correct | Grade A – Nightingale
Question 1
The physician orders acetaminophen 1000 mg PO. The medication is available as
500 mg tablets. How many tablets should the nurse administer?
A. 1 tablet
B. 2 tablets
C. 3 tablets
D. 4 tablets
Correct Answer: B. 2 tablets
Rationale: Use the formula: Desired ÷ Available × Quantity = 1000 mg ÷ 500 mg × 1
tablet = 2 tablets. Always verify the dosage strength on the medication label before
administration .
Question 2
A patient is prescribed 250 mg of an antibiotic PO every 6 hours. The medication is
available in 125 mg tablets. How many tablets should the nurse administer per
dose?
A. 1 tablet
B. 2 tablets
C. 3 tablets
D. 4 tablets
Correct Answer: B. 2 tablets
Rationale: Calculate by dividing the prescribed dose by the strength per tablet: 250 mg
÷ 125 mg = 2 tablets. Always verify that the dosage form matches the provider's order
before administration .
,Question 3
A provider orders 0.5 grams of a drug PO. The tablets are available in 250 mg. How
many tablets will the nurse give?
A. 1 tablet
B. 2 tablets
C. 3 tablets
D. 4 tablets
Correct Answer: B. 2 tablets
Rationale: Convert grams to milligrams: 0.5 g × 1000 = 500 mg. Then divide by the
tablet strength: 500 mg ÷ 250 mg = 2 tablets .
Question 4
The order reads cephalexin 15 mg PO. The medication is available in 10 mg/5 mL.
How many mL should the nurse administer?
A. 5 mL
B. 7.5 mL
C. 10 mL
D. 12.5 mL
Correct Answer: B. 7.5 mL
Rationale: Use the formula: Desired ÷ Available × Quantity = 15 mg ÷ 10 mg × 5 mL =
7.5 mL .
Question 5
A patient is prescribed 0.25 mg of a drug IV push. The vial is labeled 0.5 mg/2 mL.
How much should the nurse draw up?
A. 0.5 mL
B. 1 mL
C. 1.5 mL
D. 2 mL
,Correct Answer: B. 1 mL
Rationale: Using the dosage formula: Desired 0.25 mg ÷ Available 0.5 mg × 2 mL = 1
mL .
Question 6
A patient needs digoxin 0.25 mg orally. The medication is available as 0.125
mg/tablet. How many tablets should be administered?
A. 0.5 tablet
B. 1 tablet
C. 2 tablets
D. 3 tablets
Correct Answer: C. 2 tablets
Rationale: 0.25 mg ÷ 0.125 mg × 1 tablet = 2 tablets .
Question 7
Convert 1500 milligrams to grams.
A. 0.15 g
B. 1.5 g
C. 15 g
D. 150 g
Correct Answer: B. 1.5 g
Rationale: 1000 mg = 1 g; therefore 1500 mg ÷ 1000 = 1.5 g .
Question 8
A prescription reads aspirin 650 mg orally. The medication is available as 325
mg/tablet. How many tablets should be given?
, A. 1 tablet
B. 2 tablets
C. 3 tablets
D. 4 tablets
Correct Answer: B. 2 tablets
Rationale: 650 mg ÷ 325 mg × 1 tablet = 2 tablets .
Question 9
A patient is prescribed amoxicillin 2 g by mouth every 12 hours. The medication is
available in 1000 mg extended-release tablets. How many tablets should the nurse
administer?
A. 1 tablet
B. 2 tablets
C. 3 tablets
D. 4 tablets
Correct Answer: B. 2 tablets
Rationale: Convert 2 g to 2000 mg. 2000 mg ÷ 1000 mg = 2 tablets .
Question 10
The order is for 0.1 mg of a drug. Available are 50 mcg tablets. How many tablets
should be given?
A. 0.5 tablets
B. 2 tablets
C. 1 tablet
D. 4 tablets
Correct Answer: B. 2 tablets
Rationale: Convert 0.1 mg to mcg: 0.1 mg × 1000 = 100 mcg. Then 100 mcg ÷ 50 mcg
= 2 tablets .
(Latest Update ) Questions and Verified
Answers |100% Correct | Grade A – Nightingale
Question 1
The physician orders acetaminophen 1000 mg PO. The medication is available as
500 mg tablets. How many tablets should the nurse administer?
A. 1 tablet
B. 2 tablets
C. 3 tablets
D. 4 tablets
Correct Answer: B. 2 tablets
Rationale: Use the formula: Desired ÷ Available × Quantity = 1000 mg ÷ 500 mg × 1
tablet = 2 tablets. Always verify the dosage strength on the medication label before
administration .
Question 2
A patient is prescribed 250 mg of an antibiotic PO every 6 hours. The medication is
available in 125 mg tablets. How many tablets should the nurse administer per
dose?
A. 1 tablet
B. 2 tablets
C. 3 tablets
D. 4 tablets
Correct Answer: B. 2 tablets
Rationale: Calculate by dividing the prescribed dose by the strength per tablet: 250 mg
÷ 125 mg = 2 tablets. Always verify that the dosage form matches the provider's order
before administration .
,Question 3
A provider orders 0.5 grams of a drug PO. The tablets are available in 250 mg. How
many tablets will the nurse give?
A. 1 tablet
B. 2 tablets
C. 3 tablets
D. 4 tablets
Correct Answer: B. 2 tablets
Rationale: Convert grams to milligrams: 0.5 g × 1000 = 500 mg. Then divide by the
tablet strength: 500 mg ÷ 250 mg = 2 tablets .
Question 4
The order reads cephalexin 15 mg PO. The medication is available in 10 mg/5 mL.
How many mL should the nurse administer?
A. 5 mL
B. 7.5 mL
C. 10 mL
D. 12.5 mL
Correct Answer: B. 7.5 mL
Rationale: Use the formula: Desired ÷ Available × Quantity = 15 mg ÷ 10 mg × 5 mL =
7.5 mL .
Question 5
A patient is prescribed 0.25 mg of a drug IV push. The vial is labeled 0.5 mg/2 mL.
How much should the nurse draw up?
A. 0.5 mL
B. 1 mL
C. 1.5 mL
D. 2 mL
,Correct Answer: B. 1 mL
Rationale: Using the dosage formula: Desired 0.25 mg ÷ Available 0.5 mg × 2 mL = 1
mL .
Question 6
A patient needs digoxin 0.25 mg orally. The medication is available as 0.125
mg/tablet. How many tablets should be administered?
A. 0.5 tablet
B. 1 tablet
C. 2 tablets
D. 3 tablets
Correct Answer: C. 2 tablets
Rationale: 0.25 mg ÷ 0.125 mg × 1 tablet = 2 tablets .
Question 7
Convert 1500 milligrams to grams.
A. 0.15 g
B. 1.5 g
C. 15 g
D. 150 g
Correct Answer: B. 1.5 g
Rationale: 1000 mg = 1 g; therefore 1500 mg ÷ 1000 = 1.5 g .
Question 8
A prescription reads aspirin 650 mg orally. The medication is available as 325
mg/tablet. How many tablets should be given?
, A. 1 tablet
B. 2 tablets
C. 3 tablets
D. 4 tablets
Correct Answer: B. 2 tablets
Rationale: 650 mg ÷ 325 mg × 1 tablet = 2 tablets .
Question 9
A patient is prescribed amoxicillin 2 g by mouth every 12 hours. The medication is
available in 1000 mg extended-release tablets. How many tablets should the nurse
administer?
A. 1 tablet
B. 2 tablets
C. 3 tablets
D. 4 tablets
Correct Answer: B. 2 tablets
Rationale: Convert 2 g to 2000 mg. 2000 mg ÷ 1000 mg = 2 tablets .
Question 10
The order is for 0.1 mg of a drug. Available are 50 mcg tablets. How many tablets
should be given?
A. 0.5 tablets
B. 2 tablets
C. 1 tablet
D. 4 tablets
Correct Answer: B. 2 tablets
Rationale: Convert 0.1 mg to mcg: 0.1 mg × 1000 = 100 mcg. Then 100 mcg ÷ 50 mcg
= 2 tablets .
