NCLEX Dosage Calculations Quick Practice — 25 Questions + Rationales
Document Outline
1
Overview of Dosage Calculations
2
Conversion Cheat Sheet
3
NCLEX-Style Practice Questions + Rationales
4
Answer Key Table
5
Free Tools & Practice Calculators
, 1. Overview of Dosage Calculations
Medication math is about accuracy, logic, and safety. If you can read an order, convert units, and apply
formulas correctly — you’re ahead of most.
Core Formula:
Desired/Have× Quantity=Amount to Give
Always remember:
Convert all units (mg ↔ g, mL ↔ L) before solving.
Recheck your answer: Does it make clinical sense?
2. Conversion Cheat Sheet
1g 1000 mg
1 mg 1000 mcg
1L 1000 mL
1 tsp 5 mL
1 tbsp 15 mL
1 oz 30 mL
1 kg 2.2 lbs
3. NCLEX Dosage Practice Quiz – 25 Questions + Rationales
1. Order: Acetaminophen 650 mg PO.
Available: 325 mg tablets.
How many tablets do you give?
A. 1
B. 2 ✅
C. 3
D. 4
Rationale: 650 ÷ 325 = 2 tablets.
2. Order: Heparin 5000 units subcut.
Available: 10,000 units/mL.
How many mL?
A. 0.25
B. 0.3
C. 0.5 ✅
Document Outline
1
Overview of Dosage Calculations
2
Conversion Cheat Sheet
3
NCLEX-Style Practice Questions + Rationales
4
Answer Key Table
5
Free Tools & Practice Calculators
, 1. Overview of Dosage Calculations
Medication math is about accuracy, logic, and safety. If you can read an order, convert units, and apply
formulas correctly — you’re ahead of most.
Core Formula:
Desired/Have× Quantity=Amount to Give
Always remember:
Convert all units (mg ↔ g, mL ↔ L) before solving.
Recheck your answer: Does it make clinical sense?
2. Conversion Cheat Sheet
1g 1000 mg
1 mg 1000 mcg
1L 1000 mL
1 tsp 5 mL
1 tbsp 15 mL
1 oz 30 mL
1 kg 2.2 lbs
3. NCLEX Dosage Practice Quiz – 25 Questions + Rationales
1. Order: Acetaminophen 650 mg PO.
Available: 325 mg tablets.
How many tablets do you give?
A. 1
B. 2 ✅
C. 3
D. 4
Rationale: 650 ÷ 325 = 2 tablets.
2. Order: Heparin 5000 units subcut.
Available: 10,000 units/mL.
How many mL?
A. 0.25
B. 0.3
C. 0.5 ✅
