Dosage Calculation Competency Exam
— Code: NUR-DOSAGE | 100-Question
Advanced Practice Exam 2026 |
Questions & Answers with Detailed
Rationales | Complete Exam Prep &
Study Guide
1. A patient is prescribed amoxicillin 750 mg PO. Available: amoxicillin 250 mg
capsules. How many capsules should the nurse administer?
A. 2 capsules
B. 2.5 capsules
C. 3 capsules
D. 3.5 capsules
Answer: C. 3 capsules
Rationale: 750 mg ÷ 250 mg/capsule = 3 capsules.
2. The provider orders acetaminophen 650 mg PO. The available liquid
contains 160 mg/5 mL. How many mL should the nurse administer?
,A. 10.3 mL
B. 20.3 mL
C. 15.6 mL
D. 25.0 mL
Answer: B. 20.3 mL
Rationale: 650 mg × 5 mL ÷ 160 mg = 20.3125 mL, rounded to 20.3 mL.
3. A patient is prescribed furosemide 60 mg PO. Tablets available are 40 mg
each. How many tablets should be administered?
A. 1 tablet
B. 1.25 tablets
C. 1.5 tablets
D. 2 tablets
Answer: C. 1.5 tablets
Rationale: 60 mg ÷ 40 mg/tablet = 1.5 tablets.
4. The order is morphine 4 mg IV. The vial contains 10 mg/mL. How many mL
should be administered?
A. 0.2 mL
B. 0.4 mL
C. 2.5 mL
D. 4 mL
Answer: B. 0.4 mL
Rationale: 4 mg ÷ 10 mg/mL = 0.4 mL.
5. A prescription requires 0.75 g of a medication. How many milligrams is this?
A. 75 mg
B. 750 mg
,C. 7,500 mg
D. 0.075 mg
Answer: B. 750 mg
Rationale: 1 g = 1,000 mg; therefore, 0.75 g × 1,000 = 750 mg.
6. The nurse must administer 1,250 mcg of a medication. How many
milligrams is this?
A. 0.125 mg
B. 1.25 mg
C. 12.5 mg
D. 125 mg
Answer: B. 1.25 mg
Rationale: 1,000 mcg = 1 mg, so 1,250 mcg = 1.25 mg.
7. A patient weighs 154 lb. What is the patient's approximate weight in
kilograms?
A. 60 kg
B. 65 kg
C. 70 kg
D. 75 kg
Answer: C. 70 kg
Rationale: 154 lb ÷ 2.2 = 70 kg.
8. A child weighs 44 lb. The prescription is 10 mg/kg/dose. How many
milligrams should be given per dose?
A. 100 mg
B. 150 mg
C. 200 mg
D. 220 mg
, Answer: C. 200 mg
Rationale: 44 lb ÷ 2.2 = 20 kg. Then 20 kg × 10 mg/kg = 200 mg.
9. An order reads 0.4 mg subcutaneously. The syringe contains 0.8 mg/mL.
How many mL should be administered?
A. 0.25 mL
B. 0.4 mL
C. 0.5 mL
D. 0.8 mL
Answer: C. 0.5 mL
Rationale: 0.4 mg ÷ 0.8 mg/mL = 0.5 mL.
10.An IV infusion contains 1,000 mL and is prescribed over 8 hours. What is the
infusion rate in mL/hr?
A. 100 mL/hr
B. 110 mL/hr
C. 125 mL/hr
D. 150 mL/hr
Answer: C. 125 mL/hr
Rationale: 1,000 mL ÷ 8 hr = 125 mL/hr.
11.An IV pump is set to deliver 75 mL/hr. How much fluid will infuse in 6
hours?
A. 350 mL
B. 400 mL
C. 450 mL
D. 500 mL
Answer: C. 450 mL
Rationale: 75 mL/hr × 6 hr = 450 mL.
— Code: NUR-DOSAGE | 100-Question
Advanced Practice Exam 2026 |
Questions & Answers with Detailed
Rationales | Complete Exam Prep &
Study Guide
1. A patient is prescribed amoxicillin 750 mg PO. Available: amoxicillin 250 mg
capsules. How many capsules should the nurse administer?
A. 2 capsules
B. 2.5 capsules
C. 3 capsules
D. 3.5 capsules
Answer: C. 3 capsules
Rationale: 750 mg ÷ 250 mg/capsule = 3 capsules.
2. The provider orders acetaminophen 650 mg PO. The available liquid
contains 160 mg/5 mL. How many mL should the nurse administer?
,A. 10.3 mL
B. 20.3 mL
C. 15.6 mL
D. 25.0 mL
Answer: B. 20.3 mL
Rationale: 650 mg × 5 mL ÷ 160 mg = 20.3125 mL, rounded to 20.3 mL.
3. A patient is prescribed furosemide 60 mg PO. Tablets available are 40 mg
each. How many tablets should be administered?
A. 1 tablet
B. 1.25 tablets
C. 1.5 tablets
D. 2 tablets
Answer: C. 1.5 tablets
Rationale: 60 mg ÷ 40 mg/tablet = 1.5 tablets.
4. The order is morphine 4 mg IV. The vial contains 10 mg/mL. How many mL
should be administered?
A. 0.2 mL
B. 0.4 mL
C. 2.5 mL
D. 4 mL
Answer: B. 0.4 mL
Rationale: 4 mg ÷ 10 mg/mL = 0.4 mL.
5. A prescription requires 0.75 g of a medication. How many milligrams is this?
A. 75 mg
B. 750 mg
,C. 7,500 mg
D. 0.075 mg
Answer: B. 750 mg
Rationale: 1 g = 1,000 mg; therefore, 0.75 g × 1,000 = 750 mg.
6. The nurse must administer 1,250 mcg of a medication. How many
milligrams is this?
A. 0.125 mg
B. 1.25 mg
C. 12.5 mg
D. 125 mg
Answer: B. 1.25 mg
Rationale: 1,000 mcg = 1 mg, so 1,250 mcg = 1.25 mg.
7. A patient weighs 154 lb. What is the patient's approximate weight in
kilograms?
A. 60 kg
B. 65 kg
C. 70 kg
D. 75 kg
Answer: C. 70 kg
Rationale: 154 lb ÷ 2.2 = 70 kg.
8. A child weighs 44 lb. The prescription is 10 mg/kg/dose. How many
milligrams should be given per dose?
A. 100 mg
B. 150 mg
C. 200 mg
D. 220 mg
, Answer: C. 200 mg
Rationale: 44 lb ÷ 2.2 = 20 kg. Then 20 kg × 10 mg/kg = 200 mg.
9. An order reads 0.4 mg subcutaneously. The syringe contains 0.8 mg/mL.
How many mL should be administered?
A. 0.25 mL
B. 0.4 mL
C. 0.5 mL
D. 0.8 mL
Answer: C. 0.5 mL
Rationale: 0.4 mg ÷ 0.8 mg/mL = 0.5 mL.
10.An IV infusion contains 1,000 mL and is prescribed over 8 hours. What is the
infusion rate in mL/hr?
A. 100 mL/hr
B. 110 mL/hr
C. 125 mL/hr
D. 150 mL/hr
Answer: C. 125 mL/hr
Rationale: 1,000 mL ÷ 8 hr = 125 mL/hr.
11.An IV pump is set to deliver 75 mL/hr. How much fluid will infuse in 6
hours?
A. 350 mL
B. 400 mL
C. 450 mL
D. 500 mL
Answer: C. 450 mL
Rationale: 75 mL/hr × 6 hr = 450 mL.
