ATI Dosage Calculation PN Adult Medical
Surgical Proctored Assessment 3.2 | Verified
Questions & Correct Answers | ATI PN Med Surg
Exam Prep 2026
• This material covers ATI PN Adult Medical Surgical Dosage Calculation
assessments designed to sharpen your clinical math and medication administration
skills for the 2026 exam cycle.
• Study by working through each question independently before checking the
highlighted correct answer and EXPERT RATIONALE — this builds the active recall
needed to perform under real exam conditions.
1. A nurse is preparing to administer amoxicillin 500 mg PO. The medication is
available as 250 mg/5 mL. How many mL should the nurse administer?
A. 5 mL
B. 7.5 mL
C. 10 mL
D. 12.5 mL
E. 15 mL
CORRECT ANSWER: C. 10 mL
EXPERT RATIONALE: Using the formula: Desired/Have × Volume = 500/250 × 5 = 10 mL
2. A nurse is to administer heparin 5,000 units subcutaneously. The vial reads
10,000 units/mL. How many mL should the nurse draw up?
A. 1 mL
B. 0.25 mL
C. 0.75 mL
D. 0.5 mL
E. 2 mL
,EXPERT RATIONALE: 5,000/10,000 × 1 mL = 0.5 mL
3. A client weighs 176 lbs. The order is for 2 mg/kg of a medication. How many
mg should the nurse administer?
A. 120 mg
B. 140 mg
C. 152 mg
D. 176 mg
E. 160 mg
EXPERT RATIONALE: Convert weight: 176 ÷ 2.2 = 80 kg. Then 80 × 2 mg = 160 mg
4. A nurse is infusing 1,000 mL of NS over 8 hours. What is the mL/hr rate?
A. 100 mL/hr
B. 115 mL/hr
C. 120 mL/hr
D. 130 mL/hr
E. 125 mL/hr
EXPERT RATIONALE: 1,000 ÷ 8 = 125 mL/hr
5. The order reads: Morphine 4 mg IV. Available: Morphine 10 mg/mL. How
many mL will the nurse administer?
A. 1 mL
B. 0.8 mL
C. 0.6 mL
D. 0.4 mL
,E. 0.2 mL
EXPERT RATIONALE: 4/10 × 1 = 0.4 mL
6. A nurse is to administer 500 mL of LR over 4 hours. The drop factor is 15
gtt/mL. What is the flow rate in gtt/min?
A. 25 gtt/min
B. 28 gtt/min
C. 30 gtt/min
D. 31 gtt/min
E. 35 gtt/min
EXPERT RATIONALE: (500 × 15) ÷ (4 × 60) = 7500 ÷ 240 = 31.25 ≈ 31 gtt/min
7. A client is prescribed metformin 1 g PO. Available: 500 mg tablets. How
many tablets should the nurse administer?
A. 0.5 tablet
B. 1 tablet
C. 1.5 tablets
D. 2 tablets
E. 2.5 tablets
EXPERT RATIONALE: 1 g = 1,000 mg. 1,000 ÷ 500 = 2 tablets
8. The provider orders dopamine 5 mcg/kg/min for a client weighing 70 kg. The
solution contains dopamine 400 mg in 250 mL D5W. What is the infusion rate
in mL/hr?
A. 10 mL/hr
, B. 11 mL/hr
C. 12 mL/hr
D. 13 mL/hr
E. 15 mL/hr
EXPERT RATIONALE: Dose = 5 × 70 = 350 mcg/min = 21,000 mcg/hr = 21 mg/hr.
Concentration = 400 mg/250 mL = 1.6 mg/mL. Rate = 21 ÷ 1.6 = 13.1 ≈ 13 mL/hr
9. A nurse is to give furosemide 80 mg IV. Available: 10 mg/mL. How many mL
should be administered?
A. 4 mL
B. 6 mL
C. 7 mL
D. 9 mL
E. 8 mL
EXPERT RATIONALE: 80 ÷ 10 = 8 mL
10. A client is ordered acetaminophen 650 mg PO. Available: 325 mg tablets.
How many tablets should be given?
A. 0.5 tablet
B. 1 tablet
C. 1.5 tablets
D. 2 tablets
E. 3 tablets
EXPERT RATIONALE: 650 ÷ 325 = 2 tablets
Surgical Proctored Assessment 3.2 | Verified
Questions & Correct Answers | ATI PN Med Surg
Exam Prep 2026
• This material covers ATI PN Adult Medical Surgical Dosage Calculation
assessments designed to sharpen your clinical math and medication administration
skills for the 2026 exam cycle.
• Study by working through each question independently before checking the
highlighted correct answer and EXPERT RATIONALE — this builds the active recall
needed to perform under real exam conditions.
1. A nurse is preparing to administer amoxicillin 500 mg PO. The medication is
available as 250 mg/5 mL. How many mL should the nurse administer?
A. 5 mL
B. 7.5 mL
C. 10 mL
D. 12.5 mL
E. 15 mL
CORRECT ANSWER: C. 10 mL
EXPERT RATIONALE: Using the formula: Desired/Have × Volume = 500/250 × 5 = 10 mL
2. A nurse is to administer heparin 5,000 units subcutaneously. The vial reads
10,000 units/mL. How many mL should the nurse draw up?
A. 1 mL
B. 0.25 mL
C. 0.75 mL
D. 0.5 mL
E. 2 mL
,EXPERT RATIONALE: 5,000/10,000 × 1 mL = 0.5 mL
3. A client weighs 176 lbs. The order is for 2 mg/kg of a medication. How many
mg should the nurse administer?
A. 120 mg
B. 140 mg
C. 152 mg
D. 176 mg
E. 160 mg
EXPERT RATIONALE: Convert weight: 176 ÷ 2.2 = 80 kg. Then 80 × 2 mg = 160 mg
4. A nurse is infusing 1,000 mL of NS over 8 hours. What is the mL/hr rate?
A. 100 mL/hr
B. 115 mL/hr
C. 120 mL/hr
D. 130 mL/hr
E. 125 mL/hr
EXPERT RATIONALE: 1,000 ÷ 8 = 125 mL/hr
5. The order reads: Morphine 4 mg IV. Available: Morphine 10 mg/mL. How
many mL will the nurse administer?
A. 1 mL
B. 0.8 mL
C. 0.6 mL
D. 0.4 mL
,E. 0.2 mL
EXPERT RATIONALE: 4/10 × 1 = 0.4 mL
6. A nurse is to administer 500 mL of LR over 4 hours. The drop factor is 15
gtt/mL. What is the flow rate in gtt/min?
A. 25 gtt/min
B. 28 gtt/min
C. 30 gtt/min
D. 31 gtt/min
E. 35 gtt/min
EXPERT RATIONALE: (500 × 15) ÷ (4 × 60) = 7500 ÷ 240 = 31.25 ≈ 31 gtt/min
7. A client is prescribed metformin 1 g PO. Available: 500 mg tablets. How
many tablets should the nurse administer?
A. 0.5 tablet
B. 1 tablet
C. 1.5 tablets
D. 2 tablets
E. 2.5 tablets
EXPERT RATIONALE: 1 g = 1,000 mg. 1,000 ÷ 500 = 2 tablets
8. The provider orders dopamine 5 mcg/kg/min for a client weighing 70 kg. The
solution contains dopamine 400 mg in 250 mL D5W. What is the infusion rate
in mL/hr?
A. 10 mL/hr
, B. 11 mL/hr
C. 12 mL/hr
D. 13 mL/hr
E. 15 mL/hr
EXPERT RATIONALE: Dose = 5 × 70 = 350 mcg/min = 21,000 mcg/hr = 21 mg/hr.
Concentration = 400 mg/250 mL = 1.6 mg/mL. Rate = 21 ÷ 1.6 = 13.1 ≈ 13 mL/hr
9. A nurse is to give furosemide 80 mg IV. Available: 10 mg/mL. How many mL
should be administered?
A. 4 mL
B. 6 mL
C. 7 mL
D. 9 mL
E. 8 mL
EXPERT RATIONALE: 80 ÷ 10 = 8 mL
10. A client is ordered acetaminophen 650 mg PO. Available: 325 mg tablets.
How many tablets should be given?
A. 0.5 tablet
B. 1 tablet
C. 1.5 tablets
D. 2 tablets
E. 3 tablets
EXPERT RATIONALE: 650 ÷ 325 = 2 tablets
