Round 845,745.2 to the nearest hinder place

I'm going to assume you meant hundreds place, but the answer would be 845,745.2. When rounding to the hundreds place, you have to determine what the digits are, if it's 0, 1, 2, 3, or 4, you will round down to the previous hundred.

If that digit is 5, 6, 7, 8, or 9, you will round up to the next hundred.