Question

a nurse is converting a toddler's weight from lb to kg. if the toddler weighs 20 lb 8 oz, she weighs how many? (tenth)

Answer 1

To convert a toddler's weight of 20 lb 8 oz to kilograms, we convert the ounces to pounds, add it to the total pounds, and then use the conversion factor to get 9.299384 kg, which rounds up to 9.3 kg.

Step-by-step explanation:

To convert the toddler's weight from pounds (lb) and ounces (oz) to kilograms (kg), we need to use the conversion factors 1 lb = 0.453592 kg and 1 oz = 0.0283495 kg. Given that the toddler weighs 20 lb 8 oz, the first step is to convert the ounces to pounds since there are 16 ounces in a pound:

• 8 oz × (1 lb / 16 oz) = 0.5 lb

Next, add the pounds together:

• 20 lb + 0.5 lb = 20.5 lb

Now, convert the total pounds to kilograms:

• 20.5 lb × 0.453592 kg/lb = 9.299384 kg

As we aim for the tenths place, we round the result:

• 9.299384 kg ≈ 9.3 kg

The toddler weighs approximately 9.3 kg when rounded to the nearest tenth.