Pediatric Dosage Calculation Competency
Examination DEFINED ANSWERS LATEST
ALREADY GRADED A+ (2025/2026
(Questions 1-25: Safe Dosage Ranges & Weight Conversions)
1. A child weighs 22 lbs. The safe dose range for Drug A is 5-10 mg/kg/day divided
every 8 hours. What is the child's weight in kg?
a) 10 kg
b) 22 kg
c) 48.4 kg
d) 11 kg
Answer: a) 10 kg
Rationale: 1 kg = 2.2 lbs. 22 lbs / 2.2 = 10 kg.
2. Using the information from Question 1, what is the minimum total daily safe
dose of Drug A for this child?
a) 22 mg
b) 50 mg
c) 100 mg
,d) 110 mg
Answer: b) 50 mg
Rationale: Minimum safe dose is 5 mg/kg/day. Child weighs 10 kg. 5 mg × 10 kg =
50 mg/day.
3. Using the information from Question 1, what is the maximum total daily safe
dose of Drug A for this child?
a) 50 mg
b) 10 mg
c) 100 mg
d) 220 mg
Answer: c) 100 mg
Rationale: Maximum safe dose is 10 mg/kg/day. 10 mg × 10 kg = 100 mg/day.
4. The physician orders Drug A 30 mg IV every 8 hours for the child in Question 1.
Is this a safe dose?
a) Yes, 90 mg/day is within the safe range.
b) No, it exceeds the maximum safe dose.
c) No, it is below the minimum safe dose.
d) It cannot be determined.
Answer: a) Yes, 90 mg/day is within the safe range.
Rationale: Total daily dose = 30 mg × 3 doses = 90 mg/day. The safe range is 50-
100 mg/day. 90 mg is within this range.
,5. A 4-year-old child weighs 16.5 kg. The safe dose of Drug B is 0.5-2 mg/kg/dose.
What is the maximum safe single dose?
a) 8.25 mg
b) 16.5 mg
c) 33 mg
d) 66 mg
Answer: c) 33 mg
Rationale: Maximum single dose = 2 mg/kg. 2 mg × 16.5 kg = 33 mg/dose.
6. The order for the child in Question 5 reads: Drug B 25 mg PO now. Is this a safe
dose?
a) No, it exceeds the maximum safe single dose.
b) No, it is below the minimum safe dose.
c) Yes, it is within the safe range.
d) The safe range cannot be calculated.
Answer: c) Yes, it is within the safe range.
Rationale: The safe range for a single dose is 8.25 mg (minimum) to 33 mg
(maximum). The ordered dose of 25 mg falls within this range.
7. A child weighs 35 lbs. Convert this weight to kilograms.
a) 77 kg
b) 16 kg
, c) 15.9 kg
d) 17.5 kg
Answer: c) 15.9 kg
Rationale: 35 lbs / 2.2 kg/lb = 15.909 kg, which rounds to 15.9 kg.
8. The safe dose of Drug C is 25-50 mg/kg/day divided q6h. The child weighs 20
kg. What is the maximum single dose that can be given?
a) 125 mg
b) 250 mg
c) 500 mg
d) 1000 mg
Answer: b) 250 mg
Rationale: Maximum daily dose = 50 mg/kg × 20 kg = 1000 mg/day. Divided q6h
means 4 doses/day. 1000 mg / 4 = 250 mg/dose.
9. A 3-year-old child weighs 14 kg. The safe dose range for Drug D is 1-3
mg/kg/day. The order is for 10 mg BID. Is this safe?
a) Unsafe; total daily dose is 20 mg, exceeding the maximum of 14 mg.
b) Unsafe; total daily dose is 20 mg, exceeding the maximum of 42 mg.
c) Safe; total daily dose is 20 mg, which is within the 14-42 mg/day range.
d) Safe; total daily dose is 10 mg, which is within the 14-42 mg/day range.
Answer: c) Safe; total daily dose is 20 mg, which is within the 14-42 mg/day range.
Examination DEFINED ANSWERS LATEST
ALREADY GRADED A+ (2025/2026
(Questions 1-25: Safe Dosage Ranges & Weight Conversions)
1. A child weighs 22 lbs. The safe dose range for Drug A is 5-10 mg/kg/day divided
every 8 hours. What is the child's weight in kg?
a) 10 kg
b) 22 kg
c) 48.4 kg
d) 11 kg
Answer: a) 10 kg
Rationale: 1 kg = 2.2 lbs. 22 lbs / 2.2 = 10 kg.
2. Using the information from Question 1, what is the minimum total daily safe
dose of Drug A for this child?
a) 22 mg
b) 50 mg
c) 100 mg
,d) 110 mg
Answer: b) 50 mg
Rationale: Minimum safe dose is 5 mg/kg/day. Child weighs 10 kg. 5 mg × 10 kg =
50 mg/day.
3. Using the information from Question 1, what is the maximum total daily safe
dose of Drug A for this child?
a) 50 mg
b) 10 mg
c) 100 mg
d) 220 mg
Answer: c) 100 mg
Rationale: Maximum safe dose is 10 mg/kg/day. 10 mg × 10 kg = 100 mg/day.
4. The physician orders Drug A 30 mg IV every 8 hours for the child in Question 1.
Is this a safe dose?
a) Yes, 90 mg/day is within the safe range.
b) No, it exceeds the maximum safe dose.
c) No, it is below the minimum safe dose.
d) It cannot be determined.
Answer: a) Yes, 90 mg/day is within the safe range.
Rationale: Total daily dose = 30 mg × 3 doses = 90 mg/day. The safe range is 50-
100 mg/day. 90 mg is within this range.
,5. A 4-year-old child weighs 16.5 kg. The safe dose of Drug B is 0.5-2 mg/kg/dose.
What is the maximum safe single dose?
a) 8.25 mg
b) 16.5 mg
c) 33 mg
d) 66 mg
Answer: c) 33 mg
Rationale: Maximum single dose = 2 mg/kg. 2 mg × 16.5 kg = 33 mg/dose.
6. The order for the child in Question 5 reads: Drug B 25 mg PO now. Is this a safe
dose?
a) No, it exceeds the maximum safe single dose.
b) No, it is below the minimum safe dose.
c) Yes, it is within the safe range.
d) The safe range cannot be calculated.
Answer: c) Yes, it is within the safe range.
Rationale: The safe range for a single dose is 8.25 mg (minimum) to 33 mg
(maximum). The ordered dose of 25 mg falls within this range.
7. A child weighs 35 lbs. Convert this weight to kilograms.
a) 77 kg
b) 16 kg
, c) 15.9 kg
d) 17.5 kg
Answer: c) 15.9 kg
Rationale: 35 lbs / 2.2 kg/lb = 15.909 kg, which rounds to 15.9 kg.
8. The safe dose of Drug C is 25-50 mg/kg/day divided q6h. The child weighs 20
kg. What is the maximum single dose that can be given?
a) 125 mg
b) 250 mg
c) 500 mg
d) 1000 mg
Answer: b) 250 mg
Rationale: Maximum daily dose = 50 mg/kg × 20 kg = 1000 mg/day. Divided q6h
means 4 doses/day. 1000 mg / 4 = 250 mg/dose.
9. A 3-year-old child weighs 14 kg. The safe dose range for Drug D is 1-3
mg/kg/day. The order is for 10 mg BID. Is this safe?
a) Unsafe; total daily dose is 20 mg, exceeding the maximum of 14 mg.
b) Unsafe; total daily dose is 20 mg, exceeding the maximum of 42 mg.
c) Safe; total daily dose is 20 mg, which is within the 14-42 mg/day range.
d) Safe; total daily dose is 10 mg, which is within the 14-42 mg/day range.
Answer: c) Safe; total daily dose is 20 mg, which is within the 14-42 mg/day range.
