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:
A nurse reviews a handwritten medication note that lists the
dose as IV mg. To document the dose in Arabic numerals, what
should the nurse enter?
This conversion is needed before the nurse can verify the total
dose.
,Options:
A. 3 mg
B. 4 mg
C. 5 mg
D. 6 mg
Correct Answer: B. 4 mg
Rationale — Correct:
Roman numeral IV equals 4 because the smaller numeral I (1)
comes before V (5) and is subtracted: 5 − 1 = 4. Accurate
numeral conversion prevents transcription errors.
Rationale — A:
3 mg would reflect III, not IV. This is a numeral-identification
error.
Rationale — C:
5 mg is V, which does not match the written dose. This could
lead to a 1 mg overdose.
Rationale — D:
6 mg is VI, which is a different Roman numeral. Misreading
Roman numerals can cause unsafe documentation.
Teaching Point: Roman numerals use subtraction when a
smaller value comes before a larger one.
Citation: Craig, G. P. (2025). Dosage Calculations Made Easy:
Solving Problems Using Dimensional Analysis (8th ed.). Ch. 1 —
Arabic Numbers and Roman Numerals.
,2) Arabic Numbers and Roman Numerals
Reference: Ch. 1 — Arabic Numbers and Roman Numerals
Question:
A medication label in a training scenario lists the dose as XIV
mL. What is the Arabic numeral equivalent?
The nurse must identify the value before documenting the
amount.
Options:
A. 13 mL
B. 14 mL
C. 16 mL
D. 19 mL
Correct Answer: B. 14 mL
Rationale — Correct:
XIV equals 14 because X = 10 and IV = 4; 10 + 4 = 14. Converting
correctly supports safe charting.
Rationale — A:
13 mL would be XIII. This is a one-unit numeral error.
Rationale — C:
16 mL would be XVI. The final numeral is incorrect.
Rationale — D:
19 mL would be XIX. This reflects a different Roman numeral
pattern.
, Teaching Point: Break Roman numerals into parts and add or
subtract carefully.
Citation: Craig, G. P. (2025). Dosage Calculations Made Easy:
Solving Problems Using Dimensional Analysis (8th ed.). Ch. 1 —
Arabic Numbers and Roman Numerals.
3) Arabic Numbers and Roman Numerals
Reference: Ch. 1 — Arabic Numbers and Roman Numerals
Question:
A chart shows a medication strength of IX mg. What Arabic
numeral should the nurse record?
The nurse is checking the value before calculating the total
dose.
Options:
A. 8 mg
B. 9 mg
C. 11 mg
D. 12 mg
Correct Answer: B. 9 mg
Rationale — Correct:
IX equals 9 because I (1) comes before X (10) and is subtracted:
10 − 1 = 9. Correct numeral conversion prevents dosing
confusion.
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:
A nurse reviews a handwritten medication note that lists the
dose as IV mg. To document the dose in Arabic numerals, what
should the nurse enter?
This conversion is needed before the nurse can verify the total
dose.
,Options:
A. 3 mg
B. 4 mg
C. 5 mg
D. 6 mg
Correct Answer: B. 4 mg
Rationale — Correct:
Roman numeral IV equals 4 because the smaller numeral I (1)
comes before V (5) and is subtracted: 5 − 1 = 4. Accurate
numeral conversion prevents transcription errors.
Rationale — A:
3 mg would reflect III, not IV. This is a numeral-identification
error.
Rationale — C:
5 mg is V, which does not match the written dose. This could
lead to a 1 mg overdose.
Rationale — D:
6 mg is VI, which is a different Roman numeral. Misreading
Roman numerals can cause unsafe documentation.
Teaching Point: Roman numerals use subtraction when a
smaller value comes before a larger one.
Citation: Craig, G. P. (2025). Dosage Calculations Made Easy:
Solving Problems Using Dimensional Analysis (8th ed.). Ch. 1 —
Arabic Numbers and Roman Numerals.
,2) Arabic Numbers and Roman Numerals
Reference: Ch. 1 — Arabic Numbers and Roman Numerals
Question:
A medication label in a training scenario lists the dose as XIV
mL. What is the Arabic numeral equivalent?
The nurse must identify the value before documenting the
amount.
Options:
A. 13 mL
B. 14 mL
C. 16 mL
D. 19 mL
Correct Answer: B. 14 mL
Rationale — Correct:
XIV equals 14 because X = 10 and IV = 4; 10 + 4 = 14. Converting
correctly supports safe charting.
Rationale — A:
13 mL would be XIII. This is a one-unit numeral error.
Rationale — C:
16 mL would be XVI. The final numeral is incorrect.
Rationale — D:
19 mL would be XIX. This reflects a different Roman numeral
pattern.
, Teaching Point: Break Roman numerals into parts and add or
subtract carefully.
Citation: Craig, G. P. (2025). Dosage Calculations Made Easy:
Solving Problems Using Dimensional Analysis (8th ed.). Ch. 1 —
Arabic Numbers and Roman Numerals.
3) Arabic Numbers and Roman Numerals
Reference: Ch. 1 — Arabic Numbers and Roman Numerals
Question:
A chart shows a medication strength of IX mg. What Arabic
numeral should the nurse record?
The nurse is checking the value before calculating the total
dose.
Options:
A. 8 mg
B. 9 mg
C. 11 mg
D. 12 mg
Correct Answer: B. 9 mg
Rationale — Correct:
IX equals 9 because I (1) comes before X (10) and is subtracted:
10 − 1 = 9. Correct numeral conversion prevents dosing
confusion.
