DOSAGE CALCULATION RN
FUNDAMENTALS ONLINE
PRACTICE ASSESSMENT 3.0 |
ESSENTIAL CLINICAL
MATHEMATICS | ASSESSMENT
MASTERY (2026) GRADE A+
A nurse is preparing to administer meperidine 75 mg IM stat.
Available is meperidine injection 100 mg/mL. How many mL
should the nurse administer?
(Round answer to nearest hundredth. Use a leading zero if it
applies. Do not use a trailing zero.) - Answer-Answer: 0.75 mL
Follow these steps for the Ratio and Proportion method of
calculation:
Step 1: What is the unit of measurement the nurse should
calculate? mL
Step 2: What is the dose the nurse should administer? Dose to
administer = Desired 75 mg
,Step 3: What is the dose available? Dose available = Have 100 mg
Step 4: Should the nurse convert the units of measurement? No
Step 5: What is the quantity of the dose available? 1 mL
Step 6: Set up an equation and solve for X.
Have/Quantity = Desired/X
100 mg / 1mL =75 mg/ X mL
X mL = 0.75 mL
Step 7: Round if necessary.
Step 8: Determine whether the amount to administer makes
sense. If there are 100 mg/mL and the prescription reads 75 mg, it
makes sense to administer 0.75 mL. The nurse should administer
meperidine 0.75 mL IM.
A nurse is preparing to administer famotidine 40 mg PO at
bedtime. Available is famotidine 20 mg/tablet. How many tablets
should the nurse administer?
(Round answer to nearest whole number. Use a leading zero if it
applies. Do not use a trailing zero.) - Answer-Answer: 2 tablets
Follow these steps for the Ratio and Proportion method of
calculation:
Step 1: What is the unit of measurement the nurse should
calculate? tablet(s)
,Step 2: What is the dose the nurse should administer? Dose to
administer = Desired 40 mg
Step 3: What is the dose available? Dose available = Have 20 mg
Step 4: Should the nurse convert the units of measurement? No
Step 5: What is the quantity of the dose available? 1 tablet
Step 6: Set up an equation and solve for X.
Have/Quantity = Desired/X
20 mg/ 1 tablet = 40 mg/X tablet(s)
X tablet(s) = 2 tablets
Step 7: Round if necessary.
Step 8: Determine whether the amount to administer makes
sense. If there are 20 mg/tablet and the prescription reads 40 mg,
it makes sense to administer 2 tablets. The nurse should
administer famotidine 2 tablets PO at bedtime.
A nurse is preparing to administer morphine 4 mg IM. Available
is morphine injection 10 mg/mL. How many mL should the nurse
administer per dose?
(Round answer to nearest tenth. Use a leading zero if it applies.
Do not use a trailing zero.) - Answer-Answer: 0.4 mL
Follow these steps for the Ratio and Proportion method of
calculation:
, Step 1: What is the unit of measurement the nurse should
calculate? mL
Step 2: What is the dose the nurse should administer? Dose to
administer = Desired 4 mg
Step 3: What is the dose available? Dose available = Have 10 mg
Step 4: Should the nurse convert the units of measurement? No
Step 5: What is the quantity of the dose available? 1 mL
Step 6: Set up an equation and solve for X.
Have/Quantity = Desired/X
10 mg / 1 mL =4 mg /X mL
X mL = 0.4 mL
Step 7: Round if necessary.
Step 8: Determine whether the amount to administer makes
sense. If there are 10 mg/mL and the prescription reads 4 mg, it
makes sense to administer 0.4 mL. The nurse should administer
morphine 0.4 mL IM.
A nurse is preparing to administer 750,000 units of procaine
penicillin G IM. Available is procaine penicillin G injection
600,000 units/mL. How many mL should the nurse administer
per dose?
(Round answer to nearest tenth. Use a leading zero if it applies.
Do not use a trailing zero.) - Answer-Answer: 1.3 mL
FUNDAMENTALS ONLINE
PRACTICE ASSESSMENT 3.0 |
ESSENTIAL CLINICAL
MATHEMATICS | ASSESSMENT
MASTERY (2026) GRADE A+
A nurse is preparing to administer meperidine 75 mg IM stat.
Available is meperidine injection 100 mg/mL. How many mL
should the nurse administer?
(Round answer to nearest hundredth. Use a leading zero if it
applies. Do not use a trailing zero.) - Answer-Answer: 0.75 mL
Follow these steps for the Ratio and Proportion method of
calculation:
Step 1: What is the unit of measurement the nurse should
calculate? mL
Step 2: What is the dose the nurse should administer? Dose to
administer = Desired 75 mg
,Step 3: What is the dose available? Dose available = Have 100 mg
Step 4: Should the nurse convert the units of measurement? No
Step 5: What is the quantity of the dose available? 1 mL
Step 6: Set up an equation and solve for X.
Have/Quantity = Desired/X
100 mg / 1mL =75 mg/ X mL
X mL = 0.75 mL
Step 7: Round if necessary.
Step 8: Determine whether the amount to administer makes
sense. If there are 100 mg/mL and the prescription reads 75 mg, it
makes sense to administer 0.75 mL. The nurse should administer
meperidine 0.75 mL IM.
A nurse is preparing to administer famotidine 40 mg PO at
bedtime. Available is famotidine 20 mg/tablet. How many tablets
should the nurse administer?
(Round answer to nearest whole number. Use a leading zero if it
applies. Do not use a trailing zero.) - Answer-Answer: 2 tablets
Follow these steps for the Ratio and Proportion method of
calculation:
Step 1: What is the unit of measurement the nurse should
calculate? tablet(s)
,Step 2: What is the dose the nurse should administer? Dose to
administer = Desired 40 mg
Step 3: What is the dose available? Dose available = Have 20 mg
Step 4: Should the nurse convert the units of measurement? No
Step 5: What is the quantity of the dose available? 1 tablet
Step 6: Set up an equation and solve for X.
Have/Quantity = Desired/X
20 mg/ 1 tablet = 40 mg/X tablet(s)
X tablet(s) = 2 tablets
Step 7: Round if necessary.
Step 8: Determine whether the amount to administer makes
sense. If there are 20 mg/tablet and the prescription reads 40 mg,
it makes sense to administer 2 tablets. The nurse should
administer famotidine 2 tablets PO at bedtime.
A nurse is preparing to administer morphine 4 mg IM. Available
is morphine injection 10 mg/mL. How many mL should the nurse
administer per dose?
(Round answer to nearest tenth. Use a leading zero if it applies.
Do not use a trailing zero.) - Answer-Answer: 0.4 mL
Follow these steps for the Ratio and Proportion method of
calculation:
, Step 1: What is the unit of measurement the nurse should
calculate? mL
Step 2: What is the dose the nurse should administer? Dose to
administer = Desired 4 mg
Step 3: What is the dose available? Dose available = Have 10 mg
Step 4: Should the nurse convert the units of measurement? No
Step 5: What is the quantity of the dose available? 1 mL
Step 6: Set up an equation and solve for X.
Have/Quantity = Desired/X
10 mg / 1 mL =4 mg /X mL
X mL = 0.4 mL
Step 7: Round if necessary.
Step 8: Determine whether the amount to administer makes
sense. If there are 10 mg/mL and the prescription reads 4 mg, it
makes sense to administer 0.4 mL. The nurse should administer
morphine 0.4 mL IM.
A nurse is preparing to administer 750,000 units of procaine
penicillin G IM. Available is procaine penicillin G injection
600,000 units/mL. How many mL should the nurse administer
per dose?
(Round answer to nearest tenth. Use a leading zero if it applies.
Do not use a trailing zero.) - Answer-Answer: 1.3 mL
