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 medication label shows the ordered dose as XII mg.
What is the dose in Arabic numerals?
Options:
A. 10 mg
B. 11 mg
C. 12 mg
D. 14 mg
,Correct Answer: C. 12 mg
Rationale:
Correct Answer: XII equals 10 + 2, which is 12. The nurse should
convert Roman numerals to Arabic numerals before
documenting or calculating the dose.
A: X equals 10, so this choice omits the two extra units.
B: This is one less than the correct value and reflects an
incomplete conversion.
D: This adds too much to the numeral and would produce an
unsafe documentation error.
Teaching Point: Roman numerals must be converted accurately
before any dose 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: The provider documents a dose as XIX mL. How
many milliliters is that in Arabic numerals?
Options:
A. 18 mL
B. 19 mL
C. 20 mL
D. 21 mL
Correct Answer: B. 19 mL
,Rationale:
Correct Answer: XIX equals 10 + 9, which is 19. Correct numeral
conversion prevents documentation and administration errors.
A: This is one less than the correct value.
C: This reflects an overcount by one unit.
D: This reflects an overcount by two units and is incorrect.
Teaching Point: Always translate Roman numerals exactly
before using the number in a calculation.
Citation: Craig, G. P. (2025). Dosage Calculations Made Easy:
Solving Problems Using Dimensional Analysis (8th ed.). Ch. 1.
3) Arabic Numbers and Roman Numerals
Reference: Ch. 1 — Arabic Numbers and Roman Numerals
Question: A charted medication dose reads viii drops. How
many drops should the nurse document in Arabic numerals?
Options:
A. 6 drops
B. 7 drops
C. 8 drops
D. 9 drops
Correct Answer: C. 8 drops
Rationale:
Correct Answer: viii equals 5 + 3, which is 8. Accurate numeral
interpretation is a basic safety step before administration or
charting.
, A: This undercounts the dose by two.
B: This undercounts the dose by one.
D: This overcounts the dose by one.
Teaching Point: Roman numerals can change the dose if they
are misread by even one unit.
Citation: Craig, G. P. (2025). Dosage Calculations Made Easy:
Solving Problems Using Dimensional Analysis (8th ed.). Ch. 1.
4) Multiplying Fractions
Reference: Ch. 1 — Multiplying Fractions
Question: The provider orders 3/4 of a 2-mg dose of a
medication. How many milligrams should the nurse administer?
Options:
A. 0.5 mg
B. 1.0 mg
C. 1.5 mg
D. 2.5 mg
Correct Answer: C. 1.5 mg
Rationale:
Correct Answer: Multiply the ordered fraction by the dose: 3/4
× 2 mg = 6/4 mg = 1.5 mg. The units remain mg, and the final
answer is a clinically appropriate decimal dose.
A: This is too low and reflects an incorrect fraction calculation.
B: This result comes from using 1/2 instead of 3/4 or from
rounding incorrectly.
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 medication label shows the ordered dose as XII mg.
What is the dose in Arabic numerals?
Options:
A. 10 mg
B. 11 mg
C. 12 mg
D. 14 mg
,Correct Answer: C. 12 mg
Rationale:
Correct Answer: XII equals 10 + 2, which is 12. The nurse should
convert Roman numerals to Arabic numerals before
documenting or calculating the dose.
A: X equals 10, so this choice omits the two extra units.
B: This is one less than the correct value and reflects an
incomplete conversion.
D: This adds too much to the numeral and would produce an
unsafe documentation error.
Teaching Point: Roman numerals must be converted accurately
before any dose 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: The provider documents a dose as XIX mL. How
many milliliters is that in Arabic numerals?
Options:
A. 18 mL
B. 19 mL
C. 20 mL
D. 21 mL
Correct Answer: B. 19 mL
,Rationale:
Correct Answer: XIX equals 10 + 9, which is 19. Correct numeral
conversion prevents documentation and administration errors.
A: This is one less than the correct value.
C: This reflects an overcount by one unit.
D: This reflects an overcount by two units and is incorrect.
Teaching Point: Always translate Roman numerals exactly
before using the number in a calculation.
Citation: Craig, G. P. (2025). Dosage Calculations Made Easy:
Solving Problems Using Dimensional Analysis (8th ed.). Ch. 1.
3) Arabic Numbers and Roman Numerals
Reference: Ch. 1 — Arabic Numbers and Roman Numerals
Question: A charted medication dose reads viii drops. How
many drops should the nurse document in Arabic numerals?
Options:
A. 6 drops
B. 7 drops
C. 8 drops
D. 9 drops
Correct Answer: C. 8 drops
Rationale:
Correct Answer: viii equals 5 + 3, which is 8. Accurate numeral
interpretation is a basic safety step before administration or
charting.
, A: This undercounts the dose by two.
B: This undercounts the dose by one.
D: This overcounts the dose by one.
Teaching Point: Roman numerals can change the dose if they
are misread by even one unit.
Citation: Craig, G. P. (2025). Dosage Calculations Made Easy:
Solving Problems Using Dimensional Analysis (8th ed.). Ch. 1.
4) Multiplying Fractions
Reference: Ch. 1 — Multiplying Fractions
Question: The provider orders 3/4 of a 2-mg dose of a
medication. How many milligrams should the nurse administer?
Options:
A. 0.5 mg
B. 1.0 mg
C. 1.5 mg
D. 2.5 mg
Correct Answer: C. 1.5 mg
Rationale:
Correct Answer: Multiply the ordered fraction by the dose: 3/4
× 2 mg = 6/4 mg = 1.5 mg. The units remain mg, and the final
answer is a clinically appropriate decimal dose.
A: This is too low and reflects an incorrect fraction calculation.
B: This result comes from using 1/2 instead of 3/4 or from
rounding incorrectly.
