ATI Dosage Calculation RN Fundamentals Proctored Exam | 2025/2026 Nursing Test Bank | 150+ Verified Practice Questions with Detailed Rationales | Comprehensive ATI Dosage & Fundamentals Study Guide for RN Students and NCLEX Exam Preparation

ATI Dosage Calculation RN Fundamentals Proctored
Exam | 2025/2026 Nursing Test Bank | 150+ Verified
Practice Questions with Detailed Rationales |
Comprehensive ATI Dosage & Fundamentals Study
Guide for RN Students and NCLEX Exam Preparation

Question 1:
A provider orders 500 mg of medication. The medication is available in 250 mg tablets.
How many tablets will the nurse administer?
Answer: 2 tablets
Rationale: 500 mg250 mg/tablet=2 tablets\frac{500 \, \text{mg}}{250 \, \text{mg/tablet}}
= 2 \, \text{tablets}250mg/tablet500mg=2tablets


Question 2:
A nurse is preparing to administer 0.5 mL of a medication. The syringe used is a 1 mL
syringe. What is the correct way to draw up this medication?
Answer: Use the 1 mL syringe and draw to the 0.5 mL mark.
Rationale: Drawing up to the 0.5 mL mark ensures the correct dosage is administered.


Question 3:
A patient is prescribed 75 mg of medication. The medication comes in a 25 mg/mL
solution. How many mL will the nurse administer?
Answer: 3 mL
Rationale: 75 mg25 mg/mL=3 mL\frac{75 \, \text{mg}}{25 \, \text{mg/mL}} = 3 \,
\text{mL}25mg/mL75mg=3mL


Question 4:
A provider orders 1,000 mcg of a medication. The medication is available in 0.5 mg
tablets. How many tablets will the nurse administer?
Answer: 2 tablets
Rationale: Convert 1,000 mcg to mg: 1,000 mcg=1 mg1,000 \, \text{mcg} = 1 \,
\text{mg}1,000mcg=1mg. Therefore, 1 mg0.5 mg/tablet=2 tablets\frac{1 \, \text{mg}}{0.5
\, \text{mg/tablet}} = 2 \, \text{tablets}0.5mg/tablet1mg=2tablets.


Question 5:
A nurse needs to administer 150 mL of IV fluid over 2 hours. What is the flow rate in
mL/hour?
Answer: 75 mL/hour
Rationale: 150 mL2 hours=75 mL/hour\frac{150 \, \text{mL}}{2 \, \text{hours}} = 75 \,
\text{mL/hour}2hours150mL=75mL/hour

,Question 6:
A medication order reads “Administer 2.5 mg of medication.” The medication is
available in 5 mg tablets. How many tablets will the nurse administer?
Answer: 0.5 tablets
Rationale: 2.5 mg5 mg/tablet=0.5 tablets\frac{2.5 \, \text{mg}}{5 \, \text{mg/tablet}} =
0.5 \, \text{tablets}5mg/tablet2.5mg=0.5tablets


Question 7:
A patient is prescribed 400 mg of a medication. The medication is available in a
concentration of 200 mg/5 mL. How many mL will the nurse administer?
Answer: 10 mL
Rationale: 400 mg200 mg/5 mL=10 mL\frac{400 \, \text{mg}}{200 \, \text{mg/5 mL}} = 10
\, \text{mL}200mg/5 mL400mg=10mL


Question 8:
A nurse is preparing to administer a medication that is available in a concentration of 10
mg/mL. The provider orders 20 mg. How many mL will the nurse administer?
Answer: 2 mL
Rationale: 20 mg10 mg/mL=2 mL\frac{20 \, \text{mg}}{10 \, \text{mg/mL}} = 2 \,
\text{mL}10mg/mL20mg=2mL


Question 9:
A provider orders 1,200 mcg of a medication. The available medication is in 0.4 mg
tablets. How many tablets will the nurse administer?
Answer: 3 tablets
Rationale: Convert 1,200 mcg to mg: 1,200 mcg=1.2 mg1,200 \, \text{mcg} = 1.2 \,
\text{mg}1,200mcg=1.2mg. Therefore, 1.2 mg0.4 mg/tablet=3 tablets\frac{1.2 \,
\text{mg}}{0.4 \, \text{mg/tablet}} = 3 \, \text{tablets}0.4mg/tablet1.2mg=3tablets.


Question 10:
A patient is to receive 100 mL of a medication over 1 hour. If the infusion pump is set to
deliver 20 drops/mL, what is the drip rate in gtt/min?
Answer: 33 gtt/min
Rationale: 100 mL1 hour=100 mL/hour\frac{100 \, \text{mL}}{1 \, \text{hour}} = 100 \,
\text{mL/hour}1hour100mL=100mL/hour and
100 mL/hour×20 gtt/mL60 min/hour=33.33 gtt/min\frac{100 \, \text{mL/hour} \times 20
\, \text{gtt/mL}}{60 \, \text{min/hour}} = 33.33 \,
\text{gtt/min}60min/hour100mL/hour×20gtt/mL=33.33gtt/min.

,Question 11:
A nurse is administering a medication that is available in a 5 mg/mL concentration. The
provider orders 15 mg. How many mL will the nurse administer?
Answer: 3 mL
Rationale: 15 mg5 mg/mL=3 mL\frac{15 \, \text{mg}}{5 \, \text{mg/mL}} = 3 \,
\text{mL}5mg/mL15mg=3mL


Question 12:
A patient is prescribed 500 mg of a medication. The available strength is 250 mg tablets.
How many tablets will the nurse administer?
Answer: 2 tablets
Rationale: 500 mg250 mg/tablet=2 tablets\frac{500 \, \text{mg}}{250 \, \text{mg/tablet}}
= 2 \, \text{tablets}250mg/tablet500mg=2tablets


Question 13:
A nurse needs to administer 0.75 g of a medication. The available form is 500 mg
tablets. How many tablets will the nurse give?
Answer: 1.5 tablets
Rationale: Convert 0.75 g to mg: 0.75 g=750 mg0.75 \, \text{g} = 750 \,
\text{mg}0.75g=750mg. Therefore, 750 mg500 mg/tablet=1.5 tablets\frac{750 \,
\text{mg}}{500 \, \text{mg/tablet}} = 1.5 \, \text{tablets}500mg/tablet750mg=1.5tablets.


Question 14:
A provider orders 300 mL of IV fluid to be infused over 6 hours. What is the flow rate in
mL/hour?
Answer: 50 mL/hour
Rationale: 300 mL6 hours=50 mL/hour\frac{300 \, \text{mL}}{6 \, \text{hours}} = 50 \,
\text{mL/hour}6hours300mL=50mL/hour


Question 15:
A nurse is preparing a medication that is available in a concentration of 500 mcg/mL.
The order is for 1.5 mg. How many mL will the nurse administer?
Answer: 3 mL
Rationale: Convert 1.5 mg to mcg: 1.5 mg=1500 mcg1.5 \, \text{mg} = 1500 \,
\text{mcg}1.5mg=1500mcg. Therefore, 1500 mcg500 mcg/mL=3 mL\frac{1500 \,
\text{mcg}}{500 \, \text{mcg/mL}} = 3 \, \text{mL}500mcg/mL1500mcg=3mL.

, Question 16:
A nurse is administering medication that is available as 250 mg/5 mL. The order is for
500 mg. How many mL will the nurse administer?
Answer: 10 mL
Rationale: 500 mg250 mg/5 mL=10 mL\frac{500 \, \text{mg}}{250 \, \text{mg/5 mL}} = 10
\, \text{mL}250mg/5 mL500mg=10mL


Question 17:
A patient is to receive 0.2 g of medication. The available form is 100 mg tablets. How
many tablets will the nurse administer?
Answer: 2 tablets
Rationale: Convert 0.2 g to mg: 0.2 g=200 mg0.2 \, \text{g} = 200 \,
\text{mg}0.2g=200mg. Therefore, 200 mg100 mg/tablet=2 tablets\frac{200 \,
\text{mg}}{100 \, \text{mg/tablet}} = 2 \, \text{tablets}100mg/tablet200mg=2tablets.


Question 18:
A nurse is preparing to administer a medication with a dosage of 1,500 mcg. The
available concentration is 0.5 mg/mL. How many mL will the nurse administer?
Answer: 3 mL
Rationale: Convert 1,500 mcg to mg: 1,500 mcg=1.5 mg1,500 \, \text{mcg} = 1.5 \,
\text{mg}1,500mcg=1.5mg. Therefore, 1.5 mg0.5 mg/mL=3 mL\frac{1.5 \, \text{mg}}{0.5
\, \text{mg/mL}} = 3 \, \text{mL}0.5mg/mL1.5mg=3mL.


Question 19:
A nurse is calculating the drip rate for a patient receiving 200 mL of IV fluid over 4 hours.
If the IV set delivers 15 drops/mL, what is the drip rate in gtt/min?
Answer: 13 gtt/min
Rationale: 200 mL4 hours=50 mL/hour\frac{200 \, \text{mL}}{4 \, \text{hours}} = 50 \,
\text{mL/hour}4hours200mL=50mL/hour and
50 mL/hour×15 gtt/mL60 min/hour=12.5 gtt/min\frac{50 \, \text{mL/hour} \times 15 \,
\text{gtt/mL}}{60 \, \text{min/hour}} = 12.5 \,
\text{gtt/min}60min/hour50mL/hour×15gtt/mL=12.5gtt/min.


Question 20:
A nurse is administering an injection of 1.5 mL of medication. The syringe used is a 3 mL
syringe. What is the correct way to draw up this medication?
Answer: Use the 3 mL syringe and draw to the 1.5 mL mark.
Rationale: Drawing up to the 1.5 mL mark ensures the correct dosage is administered.