Drug Dosage Calculations Practice Exam
WITH 100 UPDATED QUESTIONS WITH CORRECT
ANSWERS AND RATIONALE UPDATED 2026
SECTION 1: BASIC MATH & CONVERSIONS (Q1–15)
1. Convert 0.75 to a fraction in lowest terms.
A. 3/5
B. 3/4
C. 7/10
D. 4/5
Rationale: 0.75 = 75/100 = 3/4 when reduced by dividing numerator and denominator by 25.
2. Convert 2/5 to a decimal.
A. 0.25
B. 0.50
C. 0.40
D. 0.45
Rationale: 2 ÷ 5 = 0.40.
3. What is 30% expressed as a decimal?
A. 3.0
B. 0.30
C. 0.03
D. 0.003
Rationale: To convert a percentage to a decimal, divide by 100. 30 ÷ 100 = 0.30.
4. Convert 1.5 grams to milligrams.
,A. 15 mg
B. 150 mg
C. 1,500 mg
D. 15,000 mg
Rationale: 1 gram = 1,000 mg. 1.5 × 1,000 = 1,500 mg.
5. Convert 500 micrograms (mcg) to milligrams (mg).
A. 0.5 mg
B. 5 mg
C. 50 mg
D. 0.05 mg
Rationale: 1,000 mcg = 1 mg. 500 ÷ 1,000 = 0.5 mg.
6. Convert 3.2 liters to milliliters.
A. 32 mL
B. 320 mL
C. 3,200 mL
D. 32,000 mL
Rationale: 1 L = 1,000 mL. 3.2 × 1,000 = 3,200 mL.
7. A patient weighs 176 pounds. What is the weight in kilograms?
A. 75 kg
B. 80 kg
C. 88 kg
D. 90 kg
Rationale: Divide pounds by 2.2. 176 ÷ 2.2 = 80 kg.
, 8. Convert 65 kg to pounds.
A. 130 lb
B. 140 lb
C. 143 lb
D. 150 lb
Rationale: Multiply kg by 2.2. 65 × 2.2 = 143 lb.
9. Convert 100°F to Celsius (round to nearest tenth).
A. 36.5°C
B. 37.8°C
C. 38.5°C
D. 40.0°C
Rationale: °C = (°F − 32) × 5/9. (100 − 32) × 5/9 = 68 × 5/9 = 37.777… ≈ 37.8°C.
10. Convert 37°C to Fahrenheit.
A. 96.8°F
B. 98.6°F
C. 100.4°F
D. 102.2°F
Rationale: °F = (°C × 9/5) + 32. (37 × 9/5) + 32 = 66.6 + 32 = 98.6°F.
11. How many milliliters are in 1 tablespoon?
A. 5 mL
B. 10 mL
C. 15 mL
D. 30 mL
Rationale: 1 tablespoon = 15 mL. This is a standard household-to-metric conversion.
WITH 100 UPDATED QUESTIONS WITH CORRECT
ANSWERS AND RATIONALE UPDATED 2026
SECTION 1: BASIC MATH & CONVERSIONS (Q1–15)
1. Convert 0.75 to a fraction in lowest terms.
A. 3/5
B. 3/4
C. 7/10
D. 4/5
Rationale: 0.75 = 75/100 = 3/4 when reduced by dividing numerator and denominator by 25.
2. Convert 2/5 to a decimal.
A. 0.25
B. 0.50
C. 0.40
D. 0.45
Rationale: 2 ÷ 5 = 0.40.
3. What is 30% expressed as a decimal?
A. 3.0
B. 0.30
C. 0.03
D. 0.003
Rationale: To convert a percentage to a decimal, divide by 100. 30 ÷ 100 = 0.30.
4. Convert 1.5 grams to milligrams.
,A. 15 mg
B. 150 mg
C. 1,500 mg
D. 15,000 mg
Rationale: 1 gram = 1,000 mg. 1.5 × 1,000 = 1,500 mg.
5. Convert 500 micrograms (mcg) to milligrams (mg).
A. 0.5 mg
B. 5 mg
C. 50 mg
D. 0.05 mg
Rationale: 1,000 mcg = 1 mg. 500 ÷ 1,000 = 0.5 mg.
6. Convert 3.2 liters to milliliters.
A. 32 mL
B. 320 mL
C. 3,200 mL
D. 32,000 mL
Rationale: 1 L = 1,000 mL. 3.2 × 1,000 = 3,200 mL.
7. A patient weighs 176 pounds. What is the weight in kilograms?
A. 75 kg
B. 80 kg
C. 88 kg
D. 90 kg
Rationale: Divide pounds by 2.2. 176 ÷ 2.2 = 80 kg.
, 8. Convert 65 kg to pounds.
A. 130 lb
B. 140 lb
C. 143 lb
D. 150 lb
Rationale: Multiply kg by 2.2. 65 × 2.2 = 143 lb.
9. Convert 100°F to Celsius (round to nearest tenth).
A. 36.5°C
B. 37.8°C
C. 38.5°C
D. 40.0°C
Rationale: °C = (°F − 32) × 5/9. (100 − 32) × 5/9 = 68 × 5/9 = 37.777… ≈ 37.8°C.
10. Convert 37°C to Fahrenheit.
A. 96.8°F
B. 98.6°F
C. 100.4°F
D. 102.2°F
Rationale: °F = (°C × 9/5) + 32. (37 × 9/5) + 32 = 66.6 + 32 = 98.6°F.
11. How many milliliters are in 1 tablespoon?
A. 5 mL
B. 10 mL
C. 15 mL
D. 30 mL
Rationale: 1 tablespoon = 15 mL. This is a standard household-to-metric conversion.
