ATI DOSAGE CALCULATION 4 MASTERY 100
BLUEPRINT EXAMS BY WEIGHT LB OZ TO KG ORAL
PARENTERAL AND SAFE RANGES WITH FULL
RATIONALES
Weight Conversions & Basic Dosage by Weight Questions
1–100
1. A nurse is preparing to administer amoxicillin to a toddler
who weighs 26 lb 8 oz. What is the patient's weight in
kilograms?
A. 11.8 kg
B. 12.0 kg
C. 12.1 kg
D. 12.2 kg
CORRECT ANSWER: B
RATiONAlE: 8 oz / 16 oz = 0.5 lb. Total weight is 26.5 lb.
26.5 lb / 2.2 = 12.045 kg, which rounds to 12.0 kg.
2. An infant weighs 11 lb 4 oz. What is the infant's weight in
kilograms?
A. 5.1 kg
B. 5.2 kg
C. 4.9 kg
D. 5.5 kg
CORRECT ANSWER: A
RATiONAlE: 4 oz / 16 oz = 0.25 lb. Total weight is 11.25
lb. 11.25 lb / 2.2 = 5.113 kg, which rounds to 5.1 kg.
3. A preschooler weighs 44 lb 12 oz. What is the child's weight
in kilograms?
, A. 20.0 kg
B. 20.3 kg
C. 20.4 kg
D. 19.8 kg
CORRECT ANSWER: C
RATiONAlE: 12 oz / 16 oz = 0.75 lb. Total weight = 44.75
lb. 44..2 = 20.34 kg, which rounds to 20.4 kg.
4. A newborn weighs 7 lb 14 oz. What is the newborn's weight
in kilograms?
A. 3.58 kg
B. 3.59 kg
C. 3.60 kg
D. 3.55 kg
CORRECT ANSWER: B
RATiONAlE: 14 oz / 16 oz = 0.875 lb. Total weight =
7.875 lb. 7..2 = 3.579 kg, which rounds to 3.59 kg.
5. A school-age child weighs 68 lb 6 oz. What is the child's
weight in kilograms?
A. 31.0 kg
B. 31.1 kg
C. 30.9 kg
D. 31.2 kg
CORRECT ANSWER: B
RATiONAlE: 6 oz / 16 oz = 0.375 lb. Total weight =
68.375 lb. 68..2 = 31.079 kg, which rounds to 31.1 kg.
,6. An infant weighs 15 lb 2 oz. What is the weight in kg?
A. 6.8 kg
B. 6.9 kg
C. 7.0 kg
D. 7.1 kg
CORRECT ANSWER: B
RATiONAlE: 2 oz / 16 oz = 0.125 lb. Total weight =
15.125 lb. 15..2 = 6.875 kg, which rounds to 6.9 kg.
7. A patient weighs 184 lb. What is this patient's weight in
kilograms?
A. 83.5 kg
B. 83.6 kg
C. 83.7 kg
D. 83.8 kg
CORRECT ANSWER: B
RATiONAlE: 184 lb / 2.2 = 83.636 kg, which rounds to
83.6 kg.
8. An infant weighs 8 lb 0 oz. What is the weight in kg?
A. 3.6 kg
B. 3.7 kg
C. 3.5 kg
D. 3.8 kg
CORRECT ANSWER: A
RATiONAlE: 8 lb / 2.2 = 3.636 kg, which rounds to 3.6
kg.
, 9. A child weighs 52 lb 4 oz. What is the weight in kg?
A. 23.8 kg
B. 23.7 kg
C. 23.6 kg
D. 23.9 kg
CORRECT ANSWER: A
RATiONAlE: 4 oz / 16 oz = 0.25 lb. Total weight = 52.25
lb. 52..2 = 23.75 kg, which rounds to 23.8 kg.
10. A toddler weighs 31 lb 10 oz. What is the weight in kg?
A. 14.3 kg
B. 14.4 kg
C. 14.5 kg
D. 14.2 kg
CORRECT ANSWER: B
RATiONAlE: 10 oz / 16 oz = 0.625 lb. Total weight =
31.625 lb. 31..2 = 14.375 kg, which rounds to 14.4 kg.
11. A nurse is preparing to administer a medication dose of
5 mg/kg to a patient who weighs 72 lb. How many mg should
the nurse administer?
A. 163.6 mg
B. 360 mg
C. 164 mg
D. 160 mg
CORRECT ANSWER: A
RATiONAlE: Convert weight to kg: 72 lb / 2.2 = 32.727
kg. Multiply by dose: 32.727 kg × 5 mg/kg = 163.63 mg,
which rounds to 163.6 mg.
BLUEPRINT EXAMS BY WEIGHT LB OZ TO KG ORAL
PARENTERAL AND SAFE RANGES WITH FULL
RATIONALES
Weight Conversions & Basic Dosage by Weight Questions
1–100
1. A nurse is preparing to administer amoxicillin to a toddler
who weighs 26 lb 8 oz. What is the patient's weight in
kilograms?
A. 11.8 kg
B. 12.0 kg
C. 12.1 kg
D. 12.2 kg
CORRECT ANSWER: B
RATiONAlE: 8 oz / 16 oz = 0.5 lb. Total weight is 26.5 lb.
26.5 lb / 2.2 = 12.045 kg, which rounds to 12.0 kg.
2. An infant weighs 11 lb 4 oz. What is the infant's weight in
kilograms?
A. 5.1 kg
B. 5.2 kg
C. 4.9 kg
D. 5.5 kg
CORRECT ANSWER: A
RATiONAlE: 4 oz / 16 oz = 0.25 lb. Total weight is 11.25
lb. 11.25 lb / 2.2 = 5.113 kg, which rounds to 5.1 kg.
3. A preschooler weighs 44 lb 12 oz. What is the child's weight
in kilograms?
, A. 20.0 kg
B. 20.3 kg
C. 20.4 kg
D. 19.8 kg
CORRECT ANSWER: C
RATiONAlE: 12 oz / 16 oz = 0.75 lb. Total weight = 44.75
lb. 44..2 = 20.34 kg, which rounds to 20.4 kg.
4. A newborn weighs 7 lb 14 oz. What is the newborn's weight
in kilograms?
A. 3.58 kg
B. 3.59 kg
C. 3.60 kg
D. 3.55 kg
CORRECT ANSWER: B
RATiONAlE: 14 oz / 16 oz = 0.875 lb. Total weight =
7.875 lb. 7..2 = 3.579 kg, which rounds to 3.59 kg.
5. A school-age child weighs 68 lb 6 oz. What is the child's
weight in kilograms?
A. 31.0 kg
B. 31.1 kg
C. 30.9 kg
D. 31.2 kg
CORRECT ANSWER: B
RATiONAlE: 6 oz / 16 oz = 0.375 lb. Total weight =
68.375 lb. 68..2 = 31.079 kg, which rounds to 31.1 kg.
,6. An infant weighs 15 lb 2 oz. What is the weight in kg?
A. 6.8 kg
B. 6.9 kg
C. 7.0 kg
D. 7.1 kg
CORRECT ANSWER: B
RATiONAlE: 2 oz / 16 oz = 0.125 lb. Total weight =
15.125 lb. 15..2 = 6.875 kg, which rounds to 6.9 kg.
7. A patient weighs 184 lb. What is this patient's weight in
kilograms?
A. 83.5 kg
B. 83.6 kg
C. 83.7 kg
D. 83.8 kg
CORRECT ANSWER: B
RATiONAlE: 184 lb / 2.2 = 83.636 kg, which rounds to
83.6 kg.
8. An infant weighs 8 lb 0 oz. What is the weight in kg?
A. 3.6 kg
B. 3.7 kg
C. 3.5 kg
D. 3.8 kg
CORRECT ANSWER: A
RATiONAlE: 8 lb / 2.2 = 3.636 kg, which rounds to 3.6
kg.
, 9. A child weighs 52 lb 4 oz. What is the weight in kg?
A. 23.8 kg
B. 23.7 kg
C. 23.6 kg
D. 23.9 kg
CORRECT ANSWER: A
RATiONAlE: 4 oz / 16 oz = 0.25 lb. Total weight = 52.25
lb. 52..2 = 23.75 kg, which rounds to 23.8 kg.
10. A toddler weighs 31 lb 10 oz. What is the weight in kg?
A. 14.3 kg
B. 14.4 kg
C. 14.5 kg
D. 14.2 kg
CORRECT ANSWER: B
RATiONAlE: 10 oz / 16 oz = 0.625 lb. Total weight =
31.625 lb. 31..2 = 14.375 kg, which rounds to 14.4 kg.
11. A nurse is preparing to administer a medication dose of
5 mg/kg to a patient who weighs 72 lb. How many mg should
the nurse administer?
A. 163.6 mg
B. 360 mg
C. 164 mg
D. 160 mg
CORRECT ANSWER: A
RATiONAlE: Convert weight to kg: 72 lb / 2.2 = 32.727
kg. Multiply by dose: 32.727 kg × 5 mg/kg = 163.63 mg,
which rounds to 163.6 mg.
