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