Page | 1
DOSAGE CALCULATION RN FUNDAMENTALS ONLINE
PRACTICE ASSESSMENT 3.0 FULLY SOLVED 2025
QUESTIONS AND ANSWERS.
A nurseis preparingto administercodeine20 mg PO every6 hr PRN pain. Available is
codeine oral solution 10 mg/ 5 mL. How many mL should the nurse administer per
dose?
(Round to thenearestwholenumber.Use a leadingzeroif it applies.Do not use a trailing
zero.) - correct answer- Answer: 10 mL
Follow these steps for the Ratio and Proportion method of calculation:
1: Step
What is
theunit of measurementthenurseshouldcalculate?mL
Step2: What is thedosethenurseshouldadminister?Dose to administer
= Desired20 mg
Step3: What is thedoseavailable?Dose available= Have 10mg Step 4: Should
the nurse convert the units of measurement? No Step 5: What is the quantity of
the dose available? 5 mL
Step6: Setup an equationand solvefor X. Have/Quantity =
Desired/X
10 mg/ 5 mL = 20 mg/X mL X
mL = 10 mL
Step7: Round if necessary.
Step8: Determinewhethertheamountto administermakessense.If there are 10 mg/5
, Page | 2
mL and the prescription reads 20 mg, it makes sense to
, Page | 3
administer10 mL. The nurseshouldadministercodeineoral solution10 mL PO every 6
hr PRN pain.
A nurseis preparingto administereszopiclone2,000mcg PO to a client. How many mg
should the nurse administer?
(Round to thenearestwholenumber.Use a leadingzeroif it applies.Do not use a
trailing zero.)- correct answer- Answer: 2 mg
Followthesestepsfor theRatio and Proportionmethodof calculation:
Step 1: What is the unit of measurement the nurse should calculate? mg
2: What
Step is
thedosethenurseshouldadminister?Dose to administer
= Desired2,000mcg
Step3: What is thedoseavailable?Dose available= Have 1mg
Step4: Shouldthenurseconverttheunits of measurement?Yes (mcg does not equal mg)
1,000mcg/1mg = 2,000mcg/X mg X mg
= 2 mg
Step5: Round if necessary.
Step 6: Determine whether the amount to administer makes sense. If the prescription
reads2,000mcg and 1,000mcg equals1 mg, it makessense to administer 2 mg. The
nurse should administer eszopiclone 2 mg PO.
A nurse is preparing to administer tobramycin 4 mg/kg/day IM divided in equal
three
dosesto a patientwhoweighs60 kg. Availableis tobramycin 40 mg/mL. How many mL
should the nurse administer per dose?
, Page | 4
(Round to thenearestwholenumber.Use a leadingzeroif it applies.Do not use a trailing
zero.) - correct answer- Answer: 2 mL
Follow these steps for the Ratio and Proportion method of calculation:
1: Step
What is
theunit of measurementthenurseshouldcalculate?mg Step 2: Set up an equation and
solve for X.
X = Dose per kg × Client'sweightin kg X mg =
4 mg/kg × 60 kg
X mg = 240mg
The doseis dividedinto threeequaldoses;therefore,divideX by 3. 240 mg = 80
mg3
Step3: What is theunit of measurementthenurseshouldcalculate?mL
Step4: What is thedosethenurseshouldadminister?Dose to administer
= Desired80 mg
Step5: What is thedoseavailable?Dose available= Have 40mg Step 6: Should
the nurse convert the units of measurement? No Step 7: What is the quantity of
the dose available? 1 mL
Step8: Setup an equationand solvefor X. Have/Quantity =
Desired/X
40 mg/1mL = 80 mg/X mL X
mL = 2 mL
Step9: Round if necessary.
Step 10: Determine whether the amount to administer makes sense. If
are
there
40
mg/mL and theprescriptionreads4 mg/kg/daydividedin three equal doses, it makes
DOSAGE CALCULATION RN FUNDAMENTALS ONLINE
PRACTICE ASSESSMENT 3.0 FULLY SOLVED 2025
QUESTIONS AND ANSWERS.
A nurseis preparingto administercodeine20 mg PO every6 hr PRN pain. Available is
codeine oral solution 10 mg/ 5 mL. How many mL should the nurse administer per
dose?
(Round to thenearestwholenumber.Use a leadingzeroif it applies.Do not use a trailing
zero.) - correct answer- Answer: 10 mL
Follow these steps for the Ratio and Proportion method of calculation:
1: Step
What is
theunit of measurementthenurseshouldcalculate?mL
Step2: What is thedosethenurseshouldadminister?Dose to administer
= Desired20 mg
Step3: What is thedoseavailable?Dose available= Have 10mg Step 4: Should
the nurse convert the units of measurement? No Step 5: What is the quantity of
the dose available? 5 mL
Step6: Setup an equationand solvefor X. Have/Quantity =
Desired/X
10 mg/ 5 mL = 20 mg/X mL X
mL = 10 mL
Step7: Round if necessary.
Step8: Determinewhethertheamountto administermakessense.If there are 10 mg/5
, Page | 2
mL and the prescription reads 20 mg, it makes sense to
, Page | 3
administer10 mL. The nurseshouldadministercodeineoral solution10 mL PO every 6
hr PRN pain.
A nurseis preparingto administereszopiclone2,000mcg PO to a client. How many mg
should the nurse administer?
(Round to thenearestwholenumber.Use a leadingzeroif it applies.Do not use a
trailing zero.)- correct answer- Answer: 2 mg
Followthesestepsfor theRatio and Proportionmethodof calculation:
Step 1: What is the unit of measurement the nurse should calculate? mg
2: What
Step is
thedosethenurseshouldadminister?Dose to administer
= Desired2,000mcg
Step3: What is thedoseavailable?Dose available= Have 1mg
Step4: Shouldthenurseconverttheunits of measurement?Yes (mcg does not equal mg)
1,000mcg/1mg = 2,000mcg/X mg X mg
= 2 mg
Step5: Round if necessary.
Step 6: Determine whether the amount to administer makes sense. If the prescription
reads2,000mcg and 1,000mcg equals1 mg, it makessense to administer 2 mg. The
nurse should administer eszopiclone 2 mg PO.
A nurse is preparing to administer tobramycin 4 mg/kg/day IM divided in equal
three
dosesto a patientwhoweighs60 kg. Availableis tobramycin 40 mg/mL. How many mL
should the nurse administer per dose?
, Page | 4
(Round to thenearestwholenumber.Use a leadingzeroif it applies.Do not use a trailing
zero.) - correct answer- Answer: 2 mL
Follow these steps for the Ratio and Proportion method of calculation:
1: Step
What is
theunit of measurementthenurseshouldcalculate?mg Step 2: Set up an equation and
solve for X.
X = Dose per kg × Client'sweightin kg X mg =
4 mg/kg × 60 kg
X mg = 240mg
The doseis dividedinto threeequaldoses;therefore,divideX by 3. 240 mg = 80
mg3
Step3: What is theunit of measurementthenurseshouldcalculate?mL
Step4: What is thedosethenurseshouldadminister?Dose to administer
= Desired80 mg
Step5: What is thedoseavailable?Dose available= Have 40mg Step 6: Should
the nurse convert the units of measurement? No Step 7: What is the quantity of
the dose available? 1 mL
Step8: Setup an equationand solvefor X. Have/Quantity =
Desired/X
40 mg/1mL = 80 mg/X mL X
mL = 2 mL
Step9: Round if necessary.
Step 10: Determine whether the amount to administer makes sense. If
are
there
40
mg/mL and theprescriptionreads4 mg/kg/daydividedin three equal doses, it makes
