TEST BANK
Calculating Drug Dosages: A Patient-
Safe Approach to Nursing and Math
2nd Edition
All Chapters | Answers with
Rationales 300 Multiple Choice
Questions
30 Questions per Chapter | 10 Chapters
Prepared for Nursing Students
, CHAPTER 1 Math Review for Dosage Calculations
1. What is the decimal equivalent of the fraction 3/4?
A. 0.25
B. 0.34
C. 0.75
D. 0.50
ANSWER: C
Rationale: Divide 3 by 4 to get 0.75. Converting fractions to decimals is essential for
accurate dosage calculations.
2. Which fraction is equivalent to 0.125?
A. 1/2
B. 1/4
C. 1/8
D. 1/10
ANSWER: C
Rationale: 0.125 equals 1/8. Understanding decimal-to-fraction conversion helps in
reading drug concentrations expressed in different formats.
3. What is the product of 0.5 and 0.25?
A. 0.125
B. 0.75
C. 0.0125
D. 1.25
ANSWER: A
Rationale: Multiply 0.5 x 0.25 = 0.125. Decimal multiplication is frequently used
when calculating partial doses of medications.
4. Express 2/3 as a decimal rounded to two decimal places.
A. 0.33
, B. 0.67
C. 0.66
D. 0.70
ANSWER: B
Rationale: 2 divided by 3 equals 0.666..., which rounds to 0.67. Rounding rules are
critical in dosage calculations to prevent medication errors.
5. What is the sum of 1/4 + 1/2 + 1/8?
, A. 7/8
B. 3/4
C. 5
/8
D. 1
ANSWER: A
Rationale: Convert to common denominator: 2/8 + 4/8 + 1/8 = 7/8. Adding
fractions is necessary when combining medication volumes.
6. Which
of the following is the correct way to write forty-five thousandths as a
decimal?
A. 0.45
B. 0.045
C. 4.5
D. 0.0045
ANSWER: B
Rationale: Forty-five thousandths means 45/1000 = 0.045. Place value understanding
prevents tenfold dosing errors.
7. What is 2/5 expressed as a percentage?
A. 20%
B. 25%
C. 40%
D. 50%
ANSWER: C
Rationale: 2/5 = 0.4 = 40%. Percentage conversion is used in calculating solution
concentrations and dose adjustments.
8. Simplify the ratio 4:12.
A. 1:3
B. 2:6
C. 1:4
Calculating Drug Dosages: A Patient-
Safe Approach to Nursing and Math
2nd Edition
All Chapters | Answers with
Rationales 300 Multiple Choice
Questions
30 Questions per Chapter | 10 Chapters
Prepared for Nursing Students
, CHAPTER 1 Math Review for Dosage Calculations
1. What is the decimal equivalent of the fraction 3/4?
A. 0.25
B. 0.34
C. 0.75
D. 0.50
ANSWER: C
Rationale: Divide 3 by 4 to get 0.75. Converting fractions to decimals is essential for
accurate dosage calculations.
2. Which fraction is equivalent to 0.125?
A. 1/2
B. 1/4
C. 1/8
D. 1/10
ANSWER: C
Rationale: 0.125 equals 1/8. Understanding decimal-to-fraction conversion helps in
reading drug concentrations expressed in different formats.
3. What is the product of 0.5 and 0.25?
A. 0.125
B. 0.75
C. 0.0125
D. 1.25
ANSWER: A
Rationale: Multiply 0.5 x 0.25 = 0.125. Decimal multiplication is frequently used
when calculating partial doses of medications.
4. Express 2/3 as a decimal rounded to two decimal places.
A. 0.33
, B. 0.67
C. 0.66
D. 0.70
ANSWER: B
Rationale: 2 divided by 3 equals 0.666..., which rounds to 0.67. Rounding rules are
critical in dosage calculations to prevent medication errors.
5. What is the sum of 1/4 + 1/2 + 1/8?
, A. 7/8
B. 3/4
C. 5
/8
D. 1
ANSWER: A
Rationale: Convert to common denominator: 2/8 + 4/8 + 1/8 = 7/8. Adding
fractions is necessary when combining medication volumes.
6. Which
of the following is the correct way to write forty-five thousandths as a
decimal?
A. 0.45
B. 0.045
C. 4.5
D. 0.0045
ANSWER: B
Rationale: Forty-five thousandths means 45/1000 = 0.045. Place value understanding
prevents tenfold dosing errors.
7. What is 2/5 expressed as a percentage?
A. 20%
B. 25%
C. 40%
D. 50%
ANSWER: C
Rationale: 2/5 = 0.4 = 40%. Percentage conversion is used in calculating solution
concentrations and dose adjustments.
8. Simplify the ratio 4:12.
A. 1:3
B. 2:6
C. 1:4
