ATI Dosage Calculation RN Fundamentals
Proctored Assessment 3.2 – Questions
and Answers 2026
ATI Dosage Calculation RN –
Fundamentals (2026)
FORMULA
Desired ÷ Have × Quantity
1. Oral Tablet
Order: Metoprolol 50 mg PO
Available: 25 mg/tablet
A. 1 tablet
B. 2 tablets
C. 3 tablets
D. 4 tablets
✅ Answer: B
Solution: 50 ÷ 25 × 1 = 2 tablets
2. Liquid Medication
,Order: Amoxicillin 375 mg PO
Available: 250 mg / 5 mL
A. 5 mL
B. 6 mL
C. 7.5 mL
D. 10 mL
✅ Answer: C
Solution: 375 ÷ 250 × 5 = 7.5 mL
3. IV Push
Order: Morphine 3 mg IV
Available: 10 mg / 5 mL
A. 1 mL
B. 1.5 mL
C. 2 mL
D. 3 mL
✅ Answer: B
Solution: 3 ÷ 10 × 5 = 1.5 mL
4. Weight-Based Dose
Order: Enoxaparin 1 mg/kg
Weight: 72 kg
A. 60 mg
B. 70 mg
C. 72 mg
D. 80 mg
✅ Answer: C
Solution: 1 × 72 = 72 mg
5. IV Infusion Rate
Order: 1,200 mL over 10 hr
, A. 100 mL/hr
B. 110 mL/hr
C. 120 mL/hr
D. 130 mL/hr
✅ Answer: C
Solution: 1,200 ÷ 10 = 120 mL/hr
6. Gravity Drip
Order: 1,000 mL over 8 hr
Drop factor: 15 gtt/mL
A. 28 gtt/min
B. 30 gtt/min
C. 32 gtt/min
D. 35 gtt/min
✅ Answer: B
Solution:
1,000 ÷ 480 × 15 = 31.25 → 30 gtt/min
7. Pediatric Dosage
Order: Acetaminophen 15 mg/kg
Weight: 18 kg
A. 250 mg
B. 260 mg
C. 270 mg
D. 280 mg
✅ Answer: C
Solution: 15 × 18 = 270 mg
8. Insulin
Order: Regular insulin 8 units
Supply: 100 units/mL
Proctored Assessment 3.2 – Questions
and Answers 2026
ATI Dosage Calculation RN –
Fundamentals (2026)
FORMULA
Desired ÷ Have × Quantity
1. Oral Tablet
Order: Metoprolol 50 mg PO
Available: 25 mg/tablet
A. 1 tablet
B. 2 tablets
C. 3 tablets
D. 4 tablets
✅ Answer: B
Solution: 50 ÷ 25 × 1 = 2 tablets
2. Liquid Medication
,Order: Amoxicillin 375 mg PO
Available: 250 mg / 5 mL
A. 5 mL
B. 6 mL
C. 7.5 mL
D. 10 mL
✅ Answer: C
Solution: 375 ÷ 250 × 5 = 7.5 mL
3. IV Push
Order: Morphine 3 mg IV
Available: 10 mg / 5 mL
A. 1 mL
B. 1.5 mL
C. 2 mL
D. 3 mL
✅ Answer: B
Solution: 3 ÷ 10 × 5 = 1.5 mL
4. Weight-Based Dose
Order: Enoxaparin 1 mg/kg
Weight: 72 kg
A. 60 mg
B. 70 mg
C. 72 mg
D. 80 mg
✅ Answer: C
Solution: 1 × 72 = 72 mg
5. IV Infusion Rate
Order: 1,200 mL over 10 hr
, A. 100 mL/hr
B. 110 mL/hr
C. 120 mL/hr
D. 130 mL/hr
✅ Answer: C
Solution: 1,200 ÷ 10 = 120 mL/hr
6. Gravity Drip
Order: 1,000 mL over 8 hr
Drop factor: 15 gtt/mL
A. 28 gtt/min
B. 30 gtt/min
C. 32 gtt/min
D. 35 gtt/min
✅ Answer: B
Solution:
1,000 ÷ 480 × 15 = 31.25 → 30 gtt/min
7. Pediatric Dosage
Order: Acetaminophen 15 mg/kg
Weight: 18 kg
A. 250 mg
B. 260 mg
C. 270 mg
D. 280 mg
✅ Answer: C
Solution: 15 × 18 = 270 mg
8. Insulin
Order: Regular insulin 8 units
Supply: 100 units/mL
