A newborn weighs 7 lbs 2 oz at birth. How should the nurse accurately convert this weight to kilograms for documentation in the newborn's medical record? Round to the nearest tenth.

Multiply 7 lbs by 16 to convert to ounces, then convert to kilograms.

Add 7 lbs and 2 oz directly as 9 lbs, then divide by 2.2 to convert to kilograms.

Convert 7 lbs directly to 3.2 kg ignoring the ounces since they are negligible.

Convert 2 oz to 0.125 lb, add to 7 lb for a total of 7.125 lb, then divide by 2.2 to get 3.2 kg.