Answer: 897.3
To round to a certain place, you look at the place to the right of it. In this case, you're rounding to the tens place so you must look at the hundredths place. If it is 4 or less, then you keep the tens place as is, and if it is 5 or more, you round up.
For example, if the value was 897.35, you'd round to the nearest tens place as: 897.4
