Study Guide
Dosage Calculation
Rules for Rounding:
For all answers with the first number equal to or greater than 1, the answer will go to the
tenths place or one place after the decimal point. For example, 1.44 = 1.4.
For all answers with the first number of zero, the answer will go to the hundredths place
or two places after the decimal point. For example, 0.235 = 0.24.
For answers of ml/hr, whole numbers will be the appropriate answer. For example, 33.3
mls/hr = 33 mls/hr.
For rounding, if 5 or greater, round up. If less than 0-4, round down.
Any answer containing drops (gtts) will be in whole numbers.
Any answer with capsules will be in whole numbers.
Any answer with tablets can be proportioned. For example, ½ tablet, ¼ tablet.
Any answer with kgs is rounded to the hundredths place or two places after the decimal
point.
Practice Problems:
1. 36 lbs = _________kgs
2. 1.5 tsp = _________mls
3. 60mls = _____2_____ozs
4. 26kgs =___________lbs
5. 12.5 mls =_____2.5_____tsp
6. 4 ozs =_____120_______mls
7. A child weighing 42 lbs is started on Amoxicillin. The recommended dosage is 90mg/kg/day
divided into doses BID. Answer the following 3 questions.
7a. What is the child’s weight in kilograms (round to the 2nd decimal point)?_____________kgs
7b. What is the recommended dosage per day (total daily dosage)?____________________mgs
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, 7c. If the first dosage is given at 0700, what time should the second dosage be administered?
____________________________________________(use military time)
8, Amoxicillin 400mg/5mls is available and the patient is prescribed 600 mgs. How much
medication will be given? ____________________mls
9. Give Ranitidine 25mgs per dose PO BID. Ranitidine 15mg/1mls is available. How much
will be given per dose? __________________mls
10. Give Cetirizine 7.5 mgs. You have 5mgs/5mls available. Give _______________mls.
11. Physician orders Kantrex (kanamycin) oral suspension PO 150mg/kg/day in 2 divided doses.
Supply Kantrex 500mg/5mls. Patient’s weight: 28 lbs. How many mls should be administered
per dose? _________________mls
12. The physician orders IV fluids as follows: Infuse 1000mls of 0.45% NS solution in 10 hours
IV. Calculate the flow rate when the drop rate is 60 gtts/mls. ________100________gtts/min
13. Pediaprofen (ibuprofen) 5 mg/kg po 4h for fever over 102°F. The label reads 100 mg/5 mL.
How many milliliters will you administer to a child who weighs 30 pounds?
________3.4____mls
14. A child is to receive Morphine Sulfate 5mgs IM stat. The label reads 10mg/ml. How many
mls would you waste? _______0.5_______mls
15. Motrin (ibuprofen) 60mgs via NGT q 6 h prn pain. The label reads 40mgs/ml. How many
mls will you give?____________1.5_________mls
16. Dr. ordered 30 mls of a medication to be administered via IV in 20 minutes. How many
mls/hr will you set the pump?______90________mls/hr
17. Ceftriaxone 600mgs IM ordered. Mediation must be diluted with 5 mls to make 1gm/5mls.
How many mls will you give? __________________mls
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Dosage Calculation
Rules for Rounding:
For all answers with the first number equal to or greater than 1, the answer will go to the
tenths place or one place after the decimal point. For example, 1.44 = 1.4.
For all answers with the first number of zero, the answer will go to the hundredths place
or two places after the decimal point. For example, 0.235 = 0.24.
For answers of ml/hr, whole numbers will be the appropriate answer. For example, 33.3
mls/hr = 33 mls/hr.
For rounding, if 5 or greater, round up. If less than 0-4, round down.
Any answer containing drops (gtts) will be in whole numbers.
Any answer with capsules will be in whole numbers.
Any answer with tablets can be proportioned. For example, ½ tablet, ¼ tablet.
Any answer with kgs is rounded to the hundredths place or two places after the decimal
point.
Practice Problems:
1. 36 lbs = _________kgs
2. 1.5 tsp = _________mls
3. 60mls = _____2_____ozs
4. 26kgs =___________lbs
5. 12.5 mls =_____2.5_____tsp
6. 4 ozs =_____120_______mls
7. A child weighing 42 lbs is started on Amoxicillin. The recommended dosage is 90mg/kg/day
divided into doses BID. Answer the following 3 questions.
7a. What is the child’s weight in kilograms (round to the 2nd decimal point)?_____________kgs
7b. What is the recommended dosage per day (total daily dosage)?____________________mgs
This study source was downloaded by 100000843596919 from CourseHero.com on 03-31-2022 05:28:18 GMT -05:00
https://www.coursehero.com/file/38260087/Dosage-Calculation-Study-Guide-NUR2243C-Fall-20161docx/
, 7c. If the first dosage is given at 0700, what time should the second dosage be administered?
____________________________________________(use military time)
8, Amoxicillin 400mg/5mls is available and the patient is prescribed 600 mgs. How much
medication will be given? ____________________mls
9. Give Ranitidine 25mgs per dose PO BID. Ranitidine 15mg/1mls is available. How much
will be given per dose? __________________mls
10. Give Cetirizine 7.5 mgs. You have 5mgs/5mls available. Give _______________mls.
11. Physician orders Kantrex (kanamycin) oral suspension PO 150mg/kg/day in 2 divided doses.
Supply Kantrex 500mg/5mls. Patient’s weight: 28 lbs. How many mls should be administered
per dose? _________________mls
12. The physician orders IV fluids as follows: Infuse 1000mls of 0.45% NS solution in 10 hours
IV. Calculate the flow rate when the drop rate is 60 gtts/mls. ________100________gtts/min
13. Pediaprofen (ibuprofen) 5 mg/kg po 4h for fever over 102°F. The label reads 100 mg/5 mL.
How many milliliters will you administer to a child who weighs 30 pounds?
________3.4____mls
14. A child is to receive Morphine Sulfate 5mgs IM stat. The label reads 10mg/ml. How many
mls would you waste? _______0.5_______mls
15. Motrin (ibuprofen) 60mgs via NGT q 6 h prn pain. The label reads 40mgs/ml. How many
mls will you give?____________1.5_________mls
16. Dr. ordered 30 mls of a medication to be administered via IV in 20 minutes. How many
mls/hr will you set the pump?______90________mls/hr
17. Ceftriaxone 600mgs IM ordered. Mediation must be diluted with 5 mls to make 1gm/5mls.
How many mls will you give? __________________mls
This study source was downloaded by 100000843596919 from CourseHero.com on 03-31-2022 05:28:18 GMT -05:00
https://www.coursehero.com/file/38260087/Dosage-Calculation-Study-Guide-NUR2243C-Fall-20161docx/
