BSN HESI 215 Dosage Calculation Exam (Latest
2026-2027) – Practice Problems, Formulas &
Step-by-Step Solutions | Nursing Math Mastery
70 questions | all free-response | step-by-step rationales | final answer boxed
CONVERSIONS & FUNDAMENTALS
Q1 Order: aspirin 650 mg PO once.
Available: aspirin 325 mg/tablet, unscored.
How many tablets per dose?
Rationale:
650 mg ÷ 325 mg/tablet = 2 tablets
Answer: 2 tablets
Q2 Patient weight: 154 lb. Convert to kg (nearest tenth).
Rationale:
154 lb × 0.453592 kg/lb = 69.8 kg
Answer: 69.8 kg
Q3 Order: phenytoin 0.2 g PO BID.
,Available: phenytoin 100 mg capsules.
How many capsules per dose?
Rationale:
0.2 g = 200 mg → 200 mg ÷ 100 mg/cap = 2 capsules
Answer: 2 capsules
Q4 A bottle contains 120 mL. How many fluid ounces?
Rationale:
120 mL ÷ 30 mL/oz = 4 oz
Answer: 4 oz
Q5 Order: morphine 8 mg IV q4h PRN.
Available: morphine 10 mg/mL.
How many mL per dose?
Rationale:
8 mg ÷ 10 mg/mL = 0.8 mL
Answer: 0.8 mL
Q6 Order: digoxin 0.25 mg PO daily.
Available: digoxin 0.125 mg tablets.
,How many tablets?
Rationale:
0.25 mg ÷ 0.125 mg/tab = 2 tablets
Answer: 2 tablets
Q7 Order: potassium chloride 20 mEq PO daily.
Available: KCl 10 mEq/15 mL solution.
How many mL?
Rationale:
(20 mEq ÷ 10 mEq) × 15 mL = 30 mL
Answer: 30 mL
Q8 Order: hydroxyzine 25 mg IM q6h PRN.
Available: hydroxyzine 50 mg/2 mL.
How many mL?
Rationale:
(25 mg ÷ 50 mg) × 2 mL = 1 mL
Answer: 1 mL
Q9 Order: cephalexin 500 mg PO q6h.
, Available: cephalexin 250 mg/5 mL suspension.
How many mL per dose?
Rationale:
(500 mg ÷ 250 mg) × 5 mL = 10 mL
Answer: 10 mL
Q10 Order: haloperidol 2 mg IV q8h.
Available: haloperidol 5 mg/mL.
How many mL?
Rationale:
2 mg ÷ 5 mg/mL = 0.4 mL
Answer: 0.4 mL
ORAL & LIQUID DOSAGES (INCLUDE SCORED TABLETS)
Q11 Order: warfarin 7.5 mg PO daily.
Available: warfarin 5 mg tablets (scored).
How many tablets?
Rationale:
7.5 mg ÷ 5 mg = 1.5 tablets (scored → can split)
Answer: 1.5 tablets
2026-2027) – Practice Problems, Formulas &
Step-by-Step Solutions | Nursing Math Mastery
70 questions | all free-response | step-by-step rationales | final answer boxed
CONVERSIONS & FUNDAMENTALS
Q1 Order: aspirin 650 mg PO once.
Available: aspirin 325 mg/tablet, unscored.
How many tablets per dose?
Rationale:
650 mg ÷ 325 mg/tablet = 2 tablets
Answer: 2 tablets
Q2 Patient weight: 154 lb. Convert to kg (nearest tenth).
Rationale:
154 lb × 0.453592 kg/lb = 69.8 kg
Answer: 69.8 kg
Q3 Order: phenytoin 0.2 g PO BID.
,Available: phenytoin 100 mg capsules.
How many capsules per dose?
Rationale:
0.2 g = 200 mg → 200 mg ÷ 100 mg/cap = 2 capsules
Answer: 2 capsules
Q4 A bottle contains 120 mL. How many fluid ounces?
Rationale:
120 mL ÷ 30 mL/oz = 4 oz
Answer: 4 oz
Q5 Order: morphine 8 mg IV q4h PRN.
Available: morphine 10 mg/mL.
How many mL per dose?
Rationale:
8 mg ÷ 10 mg/mL = 0.8 mL
Answer: 0.8 mL
Q6 Order: digoxin 0.25 mg PO daily.
Available: digoxin 0.125 mg tablets.
,How many tablets?
Rationale:
0.25 mg ÷ 0.125 mg/tab = 2 tablets
Answer: 2 tablets
Q7 Order: potassium chloride 20 mEq PO daily.
Available: KCl 10 mEq/15 mL solution.
How many mL?
Rationale:
(20 mEq ÷ 10 mEq) × 15 mL = 30 mL
Answer: 30 mL
Q8 Order: hydroxyzine 25 mg IM q6h PRN.
Available: hydroxyzine 50 mg/2 mL.
How many mL?
Rationale:
(25 mg ÷ 50 mg) × 2 mL = 1 mL
Answer: 1 mL
Q9 Order: cephalexin 500 mg PO q6h.
, Available: cephalexin 250 mg/5 mL suspension.
How many mL per dose?
Rationale:
(500 mg ÷ 250 mg) × 5 mL = 10 mL
Answer: 10 mL
Q10 Order: haloperidol 2 mg IV q8h.
Available: haloperidol 5 mg/mL.
How many mL?
Rationale:
2 mg ÷ 5 mg/mL = 0.4 mL
Answer: 0.4 mL
ORAL & LIQUID DOSAGES (INCLUDE SCORED TABLETS)
Q11 Order: warfarin 7.5 mg PO daily.
Available: warfarin 5 mg tablets (scored).
How many tablets?
Rationale:
7.5 mg ÷ 5 mg = 1.5 tablets (scored → can split)
Answer: 1.5 tablets
