DOSAGE CALCULATIONS MADE
EASY
SOLVING PROBLEMS USING
DIMENSIONAL ANALYSIS
8TH EDITION
• AUTHOR(S)GLORIA PEARL
CRAIG
TEST BANK
,Question 1 (Easy)
A provider prescribes amoxicillin 500 mg PO. The medication
label reads 250 mg per capsule. How many capsules should the
nurse administer?
A. 1 capsule
B. 1.5 capsules
C. 2 capsules
D. 2.5 capsules
Correct Answer: C. 2 capsules
Rationale:
Step 1: Set up dimensional analysis.
500 mg×1 capsule250 mg500\ \text{mg} \times \frac{1\
\text{capsule}}{250\ \text{mg}}500 mg×250 mg1 capsule
Step 2: Cancel the mg units.
500250=2\frac{500}{250}=2250500=2
Step 3: Administer 2 capsules.
Medication Safety Note: Always compare the ordered dose
with the available strength before preparing oral medications.
Question 2 (Easy)
,The provider orders acetaminophen 650 mg PO. Tablets
available contain 325 mg each.
How many tablets should the nurse administer?
A. 1 tablet
B. 1.5 tablets
C. 2 tablets
D. 3 tablets
Correct Answer: C. 2 tablets
Rationale:
Step 1:
650 mg×1 tablet325 mg650\ \text{mg}\times\frac{1\
\text{tablet}}{325\ \text{mg}}650 mg×325 mg1 tablet
Step 2:
650÷325=2650\div325=2650÷325=2
Step 3: Give 2 tablets.
Medication Safety Note: Never round tablet calculations unless
tablets are scored and safe to split.
Question 3 (Easy)
, A prescription reads 30 mL of liquid medication. The medication
cup is marked in teaspoons.
How many teaspoons should the nurse administer?
A. 2 tsp
B. 4 tsp
C. 6 tsp
D. 8 tsp
Correct Answer: C. 6 tsp
Rationale:
Step 1:
Use:
5 mL=1 tsp5\ \text{mL}=1\ \text{tsp}5 mL=1 tsp
Step 2:
30 mL×1 tsp5 mL30\ \text{mL}\times\frac{1\ \text{tsp}}{5\
\text{mL}}30 mL×5 mL1 tsp
Step 3:
30÷5=6 tsp30\div5=6\ \text{tsp}30÷5=6 tsp
Medication Safety Note: Use metric devices whenever possible
to reduce household-measurement errors.
EASY
SOLVING PROBLEMS USING
DIMENSIONAL ANALYSIS
8TH EDITION
• AUTHOR(S)GLORIA PEARL
CRAIG
TEST BANK
,Question 1 (Easy)
A provider prescribes amoxicillin 500 mg PO. The medication
label reads 250 mg per capsule. How many capsules should the
nurse administer?
A. 1 capsule
B. 1.5 capsules
C. 2 capsules
D. 2.5 capsules
Correct Answer: C. 2 capsules
Rationale:
Step 1: Set up dimensional analysis.
500 mg×1 capsule250 mg500\ \text{mg} \times \frac{1\
\text{capsule}}{250\ \text{mg}}500 mg×250 mg1 capsule
Step 2: Cancel the mg units.
500250=2\frac{500}{250}=2250500=2
Step 3: Administer 2 capsules.
Medication Safety Note: Always compare the ordered dose
with the available strength before preparing oral medications.
Question 2 (Easy)
,The provider orders acetaminophen 650 mg PO. Tablets
available contain 325 mg each.
How many tablets should the nurse administer?
A. 1 tablet
B. 1.5 tablets
C. 2 tablets
D. 3 tablets
Correct Answer: C. 2 tablets
Rationale:
Step 1:
650 mg×1 tablet325 mg650\ \text{mg}\times\frac{1\
\text{tablet}}{325\ \text{mg}}650 mg×325 mg1 tablet
Step 2:
650÷325=2650\div325=2650÷325=2
Step 3: Give 2 tablets.
Medication Safety Note: Never round tablet calculations unless
tablets are scored and safe to split.
Question 3 (Easy)
, A prescription reads 30 mL of liquid medication. The medication
cup is marked in teaspoons.
How many teaspoons should the nurse administer?
A. 2 tsp
B. 4 tsp
C. 6 tsp
D. 8 tsp
Correct Answer: C. 6 tsp
Rationale:
Step 1:
Use:
5 mL=1 tsp5\ \text{mL}=1\ \text{tsp}5 mL=1 tsp
Step 2:
30 mL×1 tsp5 mL30\ \text{mL}\times\frac{1\ \text{tsp}}{5\
\text{mL}}30 mL×5 mL1 tsp
Step 3:
30÷5=6 tsp30\div5=6\ \text{tsp}30÷5=6 tsp
Medication Safety Note: Use metric devices whenever possible
to reduce household-measurement errors.
