Weight conversion (lb to kg) practice problems
Work each problem on paper first, rounding as the question says. Then open the answer to check it and see every step.
For study and exam practice, not for patient care. The orders in these problems are written for practice. In the clinic, follow the prescriber's order, your facility's protocols, and your pharmacy.
Problem 1
A child is admitted to the pediatric unit for nutritional monitoring after a recent illness, and the nurse must confirm the admission weight before calculating any weight-based care. The child weighs 38 kg. Use 1 kg = 2.2 lb. What is the child's weight in lb? Record your answer using 1 decimal place.
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Answer: 83.6 lb
- lb = kg × 2.2.
- 38 × 2.2 = 83.6 lb.
- 83.6 lb is exact, so no rounding is needed.
Problem 2
The nurse is caring for a client who weighs 176 lb. Use 1 kg = 2.2 lb. What is the client's weight in kg? Record your answer using a whole number.
Show answer and steps
Answer: 80 kg
- kg = lb ÷ 2.2.
- 176 ÷ 2.2 = 80 kg.
- 80 kg is exact, so no rounding is needed.
Problem 3
A client weighs 66 kg. Use 1 kg = 2.2 lb. What is the client's weight in lb? Record your answer using 1 decimal place.
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Answer: 145.2 lb
- lb = kg × 2.2.
- 66 × 2.2 = 145.2 lb.
- 145.2 lb is exact, so no rounding is needed.
Problem 4
Order: weigh the client before the morning medication pass. Client weight recorded on admission: 109 kg. Use 1 kg = 2.2 lb. What is the client's weight in lb? Record your answer using 1 decimal place.
Show answer and steps
Answer: 239.8 lb
- lb = kg × 2.2.
- 109 × 2.2 = 239.8 lb.
- 239.8 lb is exact, so no rounding is needed.
Problem 5
Order: the client weighs 116 kg. Use 1 kg = 2.2 lb. What is the client's weight in lb? Record your answer using 1 decimal place.
Show answer and steps
Answer: 255.2 lb
- lb = kg × 2.2.
- 116 × 2.2 = 255.2 lb.
- 255.2 lb is exact, so no rounding is needed.
Problem 6
A client weighs 78 kg. Use 1 kg = 2.2 lb. Order: weigh the client before the prescription is calculated for the dose. Available: a standing hospital weight-conversion chart. What is the client's weight in lb? Record your answer using 1 decimal place.
Show answer and steps
Answer: 171.6 lb
- lb = kg × 2.2.
- 78 × 2.2 = 171.6 lb.
- 171.6 lb is exact, so no rounding is needed.
Problem 7
Order: the client weighs 253 lb. Use 1 kg = 2.2 lb to convert the client's weight for the medication record. What is the client's weight in kg? Record your answer using a whole number.
Show answer and steps
Answer: 115 kg
- kg = lb ÷ 2.2.
- 253 ÷ 2.2 = 115 kg.
- 115 kg is exact, so no rounding is needed.
Problem 8
A child is being weighed in the clinic before a routine visit. The child's weight is 54 kg. The nurse must convert this to pounds for the record. Use 1 kg = 2.2 lb. What is the child's weight in lb? Record your answer using 1 decimal place.
Show answer and steps
Answer: 118.8 lb
- lb = kg × 2.2.
- 54 × 2.2 = 118.8 lb.
- 118.8 lb is exact, so no rounding is needed.
Problem 9
Order: the child weighs 33 kg. Use 1 kg = 2.2 lb to convert the child's weight for the chart. What is the child's weight in lb? Record your answer using 1 decimal place.
Show answer and steps
Answer: 72.6 lb
- lb = kg × 2.2.
- 33 × 2.2 = 72.6 lb.
- 72.6 lb is exact, so no rounding is needed.
Problem 10
A client weighs 125 kg. Use 1 kg = 2.2 lb. What is the client's weight in lb? Record your answer using a whole number.
Show answer and steps
Answer: 275 lb
- lb = kg × 2.2.
- 125 × 2.2 = 275 lb.
- 275 lb is exact, so no rounding is needed.
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