Dosage Calculations Made Easy
Solving Problems Using
Dimensional Analysis
8th Edition
• Author(s)Gloria Pearl Craig
TEST BANK
1) Arabic Numbers and Roman Numerals
Reference: Ch. 1 — Arabic Numbers and Roman Numerals
Question:
The provider writes XV mcg of digoxin on the medication order.
The nurse must verify the amount before administration. What
dose does XV represent?
Options:
A. 5 mcg
,B. 15 mcg
C. 25 mcg
D. 50 mcg
Correct Answer: B. 15 mcg
Rationales:
Correct: X = 10 and V = 5, so XV = 15. Accurate interpretation
prevents transcription and administration errors.
A: V alone equals 5, not XV.
C: XXV equals 25, not XV.
D: L equals 50, not XV.
Teaching Point: Roman numerals must be translated exactly
before any medication calculation.
Citation: Craig, G. P. (2025). Dosage Calculations Made Easy:
Solving Problems Using Dimensional Analysis (8th ed.). Ch. 1.
2) Arabic Numbers and Roman Numerals
Reference: Ch. 1 — Arabic Numbers and Roman Numerals
Question:
A medication administration record shows XII tablets to be
given orally once daily. The nurse is preparing the dose and
must convert the numeral correctly. How many tablets should
be administered?
Options:
A. 9 tablets
,B. 11 tablets
C. 12 tablets
D. 15 tablets
Correct Answer: C. 12 tablets
Rationales:
Correct: XII = 10 + 2 = 12. The nurse must recognize Roman
numerals to avoid dose misinterpretation.
A: 9 is IX, not XII.
B: 11 is XI, not XII.
D: 15 is XV, not XII.
Teaching Point: Count Roman numerals exactly; do not
estimate.
Citation: Craig, G. P. (2025). Dosage Calculations Made Easy:
Solving Problems Using Dimensional Analysis (8th ed.). Ch. 1.
3) Multiplying Fractions
Reference: Ch. 1 — Fractions — Multiplying Fractions
Question:
The provider orders 3/4 of the standard oral dose for a patient
who is sensitive to the medication. The standard dose is 2 mL.
How many mL should the nurse administer?
Options:
A. 0.75 mL
B. 1.5 mL
, C. 2.5 mL
D. 3.0 mL
Correct Answer: B. 1.5 mL
Rationales:
Correct: Multiply 2 mL × 3/4 = 6/4 = 1.5 mL. This is the correct
reduced dose.
A: 0.75 mL is only 3/4 of 1 mL, not 2 mL.
C: 2.5 mL is larger than the ordered reduced dose and is unsafe.
D: 3.0 mL is greater than the standard dose and does not match
the order.
Teaching Point: Multiply the whole dose by the fraction
ordered.
Citation: Craig, G. P. (2025). Dosage Calculations Made Easy:
Solving Problems Using Dimensional Analysis (8th ed.). Ch. 1.
4) Multiplying Fractions
Reference: Ch. 1 — Fractions — Multiplying Fractions
Question:
A child is prescribed 2/3 of the usual 3/4 mL oral dose. The
nurse must calculate the exact volume before giving the
medication. How many mL should be administered?
Options:
A. 0.25 mL
B. 0.5 mL
Solving Problems Using
Dimensional Analysis
8th Edition
• Author(s)Gloria Pearl Craig
TEST BANK
1) Arabic Numbers and Roman Numerals
Reference: Ch. 1 — Arabic Numbers and Roman Numerals
Question:
The provider writes XV mcg of digoxin on the medication order.
The nurse must verify the amount before administration. What
dose does XV represent?
Options:
A. 5 mcg
,B. 15 mcg
C. 25 mcg
D. 50 mcg
Correct Answer: B. 15 mcg
Rationales:
Correct: X = 10 and V = 5, so XV = 15. Accurate interpretation
prevents transcription and administration errors.
A: V alone equals 5, not XV.
C: XXV equals 25, not XV.
D: L equals 50, not XV.
Teaching Point: Roman numerals must be translated exactly
before any medication calculation.
Citation: Craig, G. P. (2025). Dosage Calculations Made Easy:
Solving Problems Using Dimensional Analysis (8th ed.). Ch. 1.
2) Arabic Numbers and Roman Numerals
Reference: Ch. 1 — Arabic Numbers and Roman Numerals
Question:
A medication administration record shows XII tablets to be
given orally once daily. The nurse is preparing the dose and
must convert the numeral correctly. How many tablets should
be administered?
Options:
A. 9 tablets
,B. 11 tablets
C. 12 tablets
D. 15 tablets
Correct Answer: C. 12 tablets
Rationales:
Correct: XII = 10 + 2 = 12. The nurse must recognize Roman
numerals to avoid dose misinterpretation.
A: 9 is IX, not XII.
B: 11 is XI, not XII.
D: 15 is XV, not XII.
Teaching Point: Count Roman numerals exactly; do not
estimate.
Citation: Craig, G. P. (2025). Dosage Calculations Made Easy:
Solving Problems Using Dimensional Analysis (8th ed.). Ch. 1.
3) Multiplying Fractions
Reference: Ch. 1 — Fractions — Multiplying Fractions
Question:
The provider orders 3/4 of the standard oral dose for a patient
who is sensitive to the medication. The standard dose is 2 mL.
How many mL should the nurse administer?
Options:
A. 0.75 mL
B. 1.5 mL
, C. 2.5 mL
D. 3.0 mL
Correct Answer: B. 1.5 mL
Rationales:
Correct: Multiply 2 mL × 3/4 = 6/4 = 1.5 mL. This is the correct
reduced dose.
A: 0.75 mL is only 3/4 of 1 mL, not 2 mL.
C: 2.5 mL is larger than the ordered reduced dose and is unsafe.
D: 3.0 mL is greater than the standard dose and does not match
the order.
Teaching Point: Multiply the whole dose by the fraction
ordered.
Citation: Craig, G. P. (2025). Dosage Calculations Made Easy:
Solving Problems Using Dimensional Analysis (8th ed.). Ch. 1.
4) Multiplying Fractions
Reference: Ch. 1 — Fractions — Multiplying Fractions
Question:
A child is prescribed 2/3 of the usual 3/4 mL oral dose. The
nurse must calculate the exact volume before giving the
medication. How many mL should be administered?
Options:
A. 0.25 mL
B. 0.5 mL
