BSN HESI 215 Dosage Calculation Exam V1-V3
(Latest 2026/2027) – Practice Problems, Formulas
& Step-by-Step Solutions | Nursing Math Mastery
65 questions | free-response | 100 % stepwise rationales | safe-dose verification
Q1. Order: Phenytoin 0.2 g PO BID.
Available: Phenytoin 100 mg capsules.
How many capsules will the nurse administer per dose?
Answer: 2 capsules
Rationale:
Formula: Desired / Have
Calculation:
0.2 g = 200 mg → 200 mg / 100 mg per capsule = 2 capsules
Clinical Conclusion: Administer 2 capsules orally twice daily.
Q2. Order: Amoxicillin 375 mg PO q8h.
Available: Amoxicillin 250 mg/5 mL suspension.
How many mL will the nurse give per dose?
Answer: 7.5 mL
,Rationale:
Formula: Desired / Have × Volume
Calculation:
375 mg ÷ 250 mg × 5 mL = 1.5 × 5 = 7.5 mL
Clinical Conclusion: Draw up 7.5 mL in oral syringe and give every 8 hours.
Q3. Order: Furosemide 40 mg IV now.
Available: Furosemide 10 mg/mL vial.
How many mL will the nurse draw up?
Answer: 4 mL
Rationale:
Formula: Desired / Have
Calculation:
40 mg ÷ 10 mg/mL = 4 mL
Clinical Conclusion: Withdraw 4 mL from vial and inject IV push over 1–2 min.
Q4. Order: Morphine sulfate 8 mg SC q4h PRN pain.
Available: Morphine sulfate 15 mg/mL ampule.
How many mL will the nurse administer?
Answer: 0.5 mL
,Rationale:
Formula: Desired / Have
Calculation:
8 mg ÷ 15 mg/mL = 0.533… → round to nearest tenth = 0.5 mL
Clinical Conclusion: Give 0.5 mL subcutaneously using 1 mL syringe; site rotation.
Q5. Order: Aspirin 650 mg PO daily.
Available: Aspirin 325 mg tablets.
How many tablets per dose?
Answer: 2 tablets
Rationale:
Formula: Desired / Have
Calculation:
650 mg ÷ 325 mg = 2 tablets
Clinical Conclusion: Patient will swallow 2 tablets with water daily.
Q6. Order: Digoxin 0.25 mg PO daily.
Available: Digoxin 0.125 mg tablets.
How many tablets?
Answer: 2 tablets
, Rationale:
Formula: Desired / Have
Calculation:
0.25 mg ÷ 0.125 mg = 2 tablets
Clinical Conclusion: Administer 2 tablets once daily; monitor apical pulse.
Q7. Order: Prednisone 20 mg PO BID.
Available: Prednisone 5 mg tablets.
How many tablets per dose?
Answer: 4 tablets
Rationale:
Formula: Desired / Have
Calculation:
20 mg ÷ 5 mg = 4 tablets
Clinical Conclusion: Give 4 tablets orally twice daily (total 40 mg/day).
Q8. Order: Acetaminophen 1 g PO q6h PRN fever.
Available: Acetaminophen 500 mg caplets.
How many caplets per dose?
Answer: 2 caplets
(Latest 2026/2027) – Practice Problems, Formulas
& Step-by-Step Solutions | Nursing Math Mastery
65 questions | free-response | 100 % stepwise rationales | safe-dose verification
Q1. Order: Phenytoin 0.2 g PO BID.
Available: Phenytoin 100 mg capsules.
How many capsules will the nurse administer per dose?
Answer: 2 capsules
Rationale:
Formula: Desired / Have
Calculation:
0.2 g = 200 mg → 200 mg / 100 mg per capsule = 2 capsules
Clinical Conclusion: Administer 2 capsules orally twice daily.
Q2. Order: Amoxicillin 375 mg PO q8h.
Available: Amoxicillin 250 mg/5 mL suspension.
How many mL will the nurse give per dose?
Answer: 7.5 mL
,Rationale:
Formula: Desired / Have × Volume
Calculation:
375 mg ÷ 250 mg × 5 mL = 1.5 × 5 = 7.5 mL
Clinical Conclusion: Draw up 7.5 mL in oral syringe and give every 8 hours.
Q3. Order: Furosemide 40 mg IV now.
Available: Furosemide 10 mg/mL vial.
How many mL will the nurse draw up?
Answer: 4 mL
Rationale:
Formula: Desired / Have
Calculation:
40 mg ÷ 10 mg/mL = 4 mL
Clinical Conclusion: Withdraw 4 mL from vial and inject IV push over 1–2 min.
Q4. Order: Morphine sulfate 8 mg SC q4h PRN pain.
Available: Morphine sulfate 15 mg/mL ampule.
How many mL will the nurse administer?
Answer: 0.5 mL
,Rationale:
Formula: Desired / Have
Calculation:
8 mg ÷ 15 mg/mL = 0.533… → round to nearest tenth = 0.5 mL
Clinical Conclusion: Give 0.5 mL subcutaneously using 1 mL syringe; site rotation.
Q5. Order: Aspirin 650 mg PO daily.
Available: Aspirin 325 mg tablets.
How many tablets per dose?
Answer: 2 tablets
Rationale:
Formula: Desired / Have
Calculation:
650 mg ÷ 325 mg = 2 tablets
Clinical Conclusion: Patient will swallow 2 tablets with water daily.
Q6. Order: Digoxin 0.25 mg PO daily.
Available: Digoxin 0.125 mg tablets.
How many tablets?
Answer: 2 tablets
, Rationale:
Formula: Desired / Have
Calculation:
0.25 mg ÷ 0.125 mg = 2 tablets
Clinical Conclusion: Administer 2 tablets once daily; monitor apical pulse.
Q7. Order: Prednisone 20 mg PO BID.
Available: Prednisone 5 mg tablets.
How many tablets per dose?
Answer: 4 tablets
Rationale:
Formula: Desired / Have
Calculation:
20 mg ÷ 5 mg = 4 tablets
Clinical Conclusion: Give 4 tablets orally twice daily (total 40 mg/day).
Q8. Order: Acetaminophen 1 g PO q6h PRN fever.
Available: Acetaminophen 500 mg caplets.
How many caplets per dose?
Answer: 2 caplets
