# Dosage Calculations 30 Questions Practice Exam

Last updated on October 9th, 2023 at 08:29 am

## Results

Last updated on October 9th, 2023 at 08:29 am

Last updated on October 9th, 2023 at 08:29 am

### #1. Question 1: A patient is prescribed 500 mg of a medication. The medication is available in 250 mg tablets. How many tablets should the nurse administer?

2 tablets

Rationale: 500 mg divided by 250 mg/tablet = 2 tablets.

### #2. A patient requires 2 liters of IV fluid over 8 hours. How many milliliters per hour should the IV be set to deliver?

250 mL/hr

Rationale: 2 liters = 2000 mL. 2000 mL divided by 8 hours = 250 mL/hr.

### #3. A patient is prescribed 40 mEq of potassium. The vial contains 20 mEq/10 mL. How many mL should the nurse administer?

20 mL

Rationale: 40 mEq divided by 20 mEq/10 mL = 2. Thus, 2 x 10 mL = 20 mL.

### #4. The doctor orders 0.5 mg of Drug X for a patient. The available dosage is 2 mg/mL. How many mL should the nurse give?

0.25 mL

Rationale: 0.5 mg divided by 2 mg/mL = 0.25 mL.

### #5. A patient is to receive 1000 mL of IV fluid over 4 hours. The drop factor is 15 gtt/mL. How many drops per minute should the IV be set to?

62.5 gtt/min

Rationale: First, calculate mL/min: 1000 mL divided by 240 minutes = 4.17 mL/min. Then, 4.17 mL/min x 15 gtt/mL = 62.5 gtt/min.

### #6. The doctor orders 3 mg of Medication Y. The available dosage is 1.5 mg/5 mL. How many mL should the nurse administer?

10 mL

Rationale: 3 mg divided by 1.5 mg/5 mL = 2. Thus, 2 x 5 mL = 10 mL.

### #7. A patient is to receive 500 mL of IV fluid over 2 hours. The drop factor is 10 gtt/mL. How many drops per minute should the IV be set to?

41.7 gtt/min

Rationale: First, calculate mL/min: 500 mL divided by 120 minutes = 4.17 mL/min. Then, 4.17 mL/min x 10 gtt/mL = 41.7 gtt/min.

### #8. The doctor orders 4 mg of Drug Z. The available dosage is 2 mg/2 mL. How many mL should the nurse give?

4 mL

Rationale: 4 mg divided by 2 mg/2 mL = 2. Thus, 2 x 2 mL = 4 mL.

### #9. A patient requires 1500 mL of IV fluid over 6 hours. How many milliliters per hour should the IV be set to deliver?

250 mL/hr

Rationale: 1500 mL divided by 6 hours = 250 mL/hr.

### #10. The doctor orders 5 mg of Medication A. The available dosage is 2.5 mg/3 mL. How many mL should the nurse administer?

6 mL

Rationale: 5 mg divided by 2.5 mg/3 mL = 2. Thus, 2 x 3 mL = 6 mL.

### #11. A patient is to receive 750 mL of IV fluid over 3 hours. The drop factor is 20 gtt/mL. How many drops per minute should the IV be set to?

83.3 gtt/min

Rationale: First, calculate mL/min: 750 mL divided by 180 minutes = 4.17 mL/min. Then, 4.17 mL/min x 20 gtt/mL = 83.3 gtt/min.

### #12. The doctor orders 8 mg of Drug B. The available dosage is 4 mg/4 mL. How many mL should the nurse give?

8 mL

Rationale: 8 mg divided by 4 mg/4 mL = 2. Thus, 2 x 4 mL = 8 mL.

### #13. A patient requires 1200 mL of IV fluid over 4 hours. How many milliliters per hour should the IV be set to deliver?

300 mL/hr

Rationale: 1200 mL divided by 4 hours = 300 mL/hr.

### #14. The doctor orders 6 mg of Medication C. The available dosage is 3 mg/6 mL. How many mL should the nurse administer?

12 mL

Rationale: 6 mg divided by 3 mg/6 mL = 2. Thus, 2 x 6 mL = 12 mL.

### #15. A patient is to receive 600 mL of IV fluid over 2 hours. The drop factor is 15 gtt/mL. How many drops per minute should the IV be set to?

75 gtt/min

Rationale: First, calculate mL/min: 600 mL divided by 120 minutes = 5 mL/min. Then, 5 mL/min x 15 gtt/mL = 75 gtt/min.

### #16. The doctor orders 10 mg of Drug D. The available dosage is 5 mg/5 mL. How many mL should the nurse give?

10 mL

Rationale: 10 mg divided by 5 mg/5 mL = 2. Thus, 2 x 5 mL = 10 mL.

### #17. A patient requires 1800 mL of IV fluid over 6 hours. How many milliliters per hour should the IV be set to deliver?

300 mL/hr

Rationale: 1800 mL divided by 6 hours = 300 mL/hr.

### #18. The doctor orders 7 mg of Medication E. The available dosage is 3.5 mg/7 mL. How many mL should the nurse administer?

14 mL

Rationale: 7 mg divided by 3.5 mg/7 mL = 2. Thus, 2 x 7 mL = 14 mL.

### #20. The doctor orders 12 mg of Drug F. The available dosage is 6 mg/8 mL. How many mL should the nurse give?

16 mL

Rationale: 12 mg divided by 6 mg/8 mL = 2. Thus, 2 x 8 mL = 16 mL.

### #21. A patient requires 2200 mL of IV fluid over 11 hours. How many milliliters per hour should the IV be set to deliver?

200 mL/hr

Rationale: 2200 mL divided by 11 hours = 200 mL/hr.

### #22. The doctor orders 9 mg of Medication G. The available dosage is 3 mg/9 mL. How many mL should the nurse administer?

27 mL

Rationale: 9 mg divided by 3 mg/9 mL = 3. Thus, 3 x 9 mL = 27 mL.

### #23. A patient is to receive 900 mL of IV fluid over 3 hours. The drop factor is 20 gtt/mL. How many drops per minute should the IV be set to?

100 gtt/min

Rationale: First, calculate mL/min: 900 mL divided by 180 minutes = 5 mL/min. Then, 5 mL/min x 20 gtt/mL = 100 gtt/min.

### #24. The doctor orders 15 mg of Drug H. The available dosage is 5 mg/15 mL. How many mL should the nurse give?

45 mL

Rationale: 15 mg divided by 5 mg/15 mL = 3. Thus, 3 x 15 mL = 45 mL.

### #25. A patient requires 1600 mL of IV fluid over 8 hours. How many milliliters per hour should the IV be set to deliver?

200 mL/hr

Rationale: 1600 mL divided by 8 hours = 200 mL/hr.

### #26. A patient is prescribed 750 mg of a medication. The medication is available in 250 mg tablets. How many tablets should the nurse administer?

3 tablets

Rationale: 750 mg divided by 250 mg/tablet = 3 tablets.

### #27. A patient needs 1.5 liters of IV fluid over 5 hours. How many milliliters per hour should the IV be set to deliver?

300 mL/hr

Rationale: 1.5 liters = 1500 mL. 1500 mL divided by 5 hours = 300 mL/hr.

### #28. The doctor orders 2.5 mg of Drug I. The available dosage is 1 mg/mL. How many mL should the nurse give?

2.5 mL

Rationale: 2.5 mg divided by 1 mg/mL = 2.5 mL.

### #29. A patient is to receive 1200 mL of IV fluid over 6 hours. The drop factor is 12 gtt/mL. How many drops per minute should the IV be set to?

40 gtt/min

Rationale: First, calculate mL/min: 1200 mL divided by 360 minutes = 3.33 mL/min. Then, 3.33 mL/min x 12 gtt/mL = 40 gtt/min.

### #30. he doctor orders 4.5 mg of Medication J. The available dosage is 1.5 mg/3 mL. How many mL should the nurse administer?

9 mL

Rationale: 4.5 mg divided by 1.5 mg/3 mL = 3. Thus, 3 x 3 mL = 9 mL. Author
Anna Curran. RN, BSN, PHN

Anna Curran. RN, BSN, PHN
Clinical Nurse Instructor

Emergency Room Registered Nurse
Critical Care Transport Nurse
Clinical Nurse Instructor for LVN and BSN students

Anna began writing extra materials to help her BSN and LVN students with their studies and writing nursing care plans. She takes the topics that the students are learning and expands on them to try to help with their understanding of the nursing process and help nursing students pass the NCLEX exams.

### 11 thoughts on “Dosage Calculations 30 Questions Practice Exam”

1. I love this help so much

2. Nice! 😉 secretly love dosage& calc. lol

3. Great. This is good help!

4. I love this but would have been much more helpful if the incorrect answers had the problem solution to it to know where I went wrong.

• We will work on that for you.

• I totally agree!!!

5. i love the questions cos they are very helpful in my exam preparation

6. Looking for practice paramedic dose questions. Missed a few of the nursing-related ones. Thanks for the practice.

7. I really liked this very help full and the questions are more like my professors. Like some one else stated just wish there was explanation for the question you get wrong.

8. • 