I was confused I thought THS was a typo.
Ok but 462.824 rounded to the nearest tenTHS is 462.8.
The tenTHS digit is one digit right from the decimal point. So in 462.824, 8 is the tenTHS digit.
Now look at the hundredTHS digit. The hundredTHS digit is the number two digits right from the decimal point. In this care, it's 2.
Since the hundredTHS digit is closer to 0 than 10, you would not round up.
So 462.824 rounded to the nearest tenTHS is 462.8.