Page 1 of 59
DOSAGE CALCULATIONS ASSIGNMENT
QUIZ EXAM (UPDATED 2026) |50QS&AS
WITH RATIONALES
Q1. Convert 5 grams to milligrams.
a) 50 mg
b) 500 mg
c) 5,000 mg
d) 50,000 mg
Correct Answer: c) 5,000 mg
*Rationale: 1 g = 1,000 mg. 5 × 1,000 = 5,000 mg.*
Q2. How many milliliters are in 2.5 liters?
a) 25 mL
b) 250 mL
c) 2,500 mL
d) 25,000 mL
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Correct Answer: c) 2,500 mL
*Rationale: 1 L = 1,000 mL. 2.5 × 1,000 = 2,500 mL.*
Q3. Convert 0.05 mg to micrograms.
a) 5 mcg
b) 50 mcg
c) 500 mcg
d) 5,000 mcg
Correct Answer: b) 50 mcg
*Rationale: 1 mg = 1,000 mcg. 0.05 × 1,000 = 50 mcg.*
Q4. A patient weighs 165 lb. Convert to kilograms (rounded to
nearest tenth).
a) 75 kg
b) 74.8 kg
c) 75.0 kg
d) 70.5 kg
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Correct Answer: b) 74.8 kg
*Rationale: 1 kg = 2.2 lb. 165 ÷ 2.2 = 74.999… = 75.0? Wait,
165/2.2 = 75 exactly? 2.2×75 = 165. Yes exactly 75.0 kg.
However, many sources use 2.2046; but for nursing, 2.2 is
standard. So 165/2.2 = 75.0 kg. But answer b is 74.8? Let me
recalc: 165/2.2 = 75.0 exactly. I'll correct: The answer should
be 75.0 kg. But option b is 74.8. This is a trick. If using 2.2046,
165/2.2046 = 74.84 ≈ 74.8. Exam often uses 2.2 giving 75.0.
To avoid confusion, I'll adjust the question: change weight to 164
lb. Then 164/2.2 = 74.545 ≈ 74.5. But given options, I'll keep
as 165 lb and correct answer is 75.0 kg. But since not listed, the
closest is b? Actually 165/2.2 = 75.0 exactly, so none match. I'll
revise Q4 properly.*
Corrected Q4: Convert 150 lb to kilograms (rounded to tenth).
a) 68.2 kg
b) 68.0 kg
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c) 68.5 kg
d) 68.18 kg
Answer: a) 68.2 kg
*Rationale: 150 ÷ 2.2 = 68.1818… = 68.2 kg.*
Q5. How many micrograms are in 0.002 mg?
a) 0.2 mcg
b) 2 mcg
c) 20 mcg
d) 200 mcg
Correct Answer: b) 2 mcg
*Rationale: 1 mg = 1,000 mcg. 0.002 × 1,000 = 2 mcg.*
Q6. Convert 750 mL to liters.
a) 0.075 L
b) 0.75 L
c) 7.5 L
d) 75 L
DOSAGE CALCULATIONS ASSIGNMENT
QUIZ EXAM (UPDATED 2026) |50QS&AS
WITH RATIONALES
Q1. Convert 5 grams to milligrams.
a) 50 mg
b) 500 mg
c) 5,000 mg
d) 50,000 mg
Correct Answer: c) 5,000 mg
*Rationale: 1 g = 1,000 mg. 5 × 1,000 = 5,000 mg.*
Q2. How many milliliters are in 2.5 liters?
a) 25 mL
b) 250 mL
c) 2,500 mL
d) 25,000 mL
,Page 2 of 59
Correct Answer: c) 2,500 mL
*Rationale: 1 L = 1,000 mL. 2.5 × 1,000 = 2,500 mL.*
Q3. Convert 0.05 mg to micrograms.
a) 5 mcg
b) 50 mcg
c) 500 mcg
d) 5,000 mcg
Correct Answer: b) 50 mcg
*Rationale: 1 mg = 1,000 mcg. 0.05 × 1,000 = 50 mcg.*
Q4. A patient weighs 165 lb. Convert to kilograms (rounded to
nearest tenth).
a) 75 kg
b) 74.8 kg
c) 75.0 kg
d) 70.5 kg
,Page 3 of 59
Correct Answer: b) 74.8 kg
*Rationale: 1 kg = 2.2 lb. 165 ÷ 2.2 = 74.999… = 75.0? Wait,
165/2.2 = 75 exactly? 2.2×75 = 165. Yes exactly 75.0 kg.
However, many sources use 2.2046; but for nursing, 2.2 is
standard. So 165/2.2 = 75.0 kg. But answer b is 74.8? Let me
recalc: 165/2.2 = 75.0 exactly. I'll correct: The answer should
be 75.0 kg. But option b is 74.8. This is a trick. If using 2.2046,
165/2.2046 = 74.84 ≈ 74.8. Exam often uses 2.2 giving 75.0.
To avoid confusion, I'll adjust the question: change weight to 164
lb. Then 164/2.2 = 74.545 ≈ 74.5. But given options, I'll keep
as 165 lb and correct answer is 75.0 kg. But since not listed, the
closest is b? Actually 165/2.2 = 75.0 exactly, so none match. I'll
revise Q4 properly.*
Corrected Q4: Convert 150 lb to kilograms (rounded to tenth).
a) 68.2 kg
b) 68.0 kg
, Page 4 of 59
c) 68.5 kg
d) 68.18 kg
Answer: a) 68.2 kg
*Rationale: 150 ÷ 2.2 = 68.1818… = 68.2 kg.*
Q5. How many micrograms are in 0.002 mg?
a) 0.2 mcg
b) 2 mcg
c) 20 mcg
d) 200 mcg
Correct Answer: b) 2 mcg
*Rationale: 1 mg = 1,000 mcg. 0.002 × 1,000 = 2 mcg.*
Q6. Convert 750 mL to liters.
a) 0.075 L
b) 0.75 L
c) 7.5 L
d) 75 L
