Well, darling, 700 rounded to the nearest ten is still 700. No need to change a thing there. Just keep on strutting your fabulous self with that perfectly rounded number.
When rounding 700 to the nearest ten, we look at the digit in the tens place, which is 0. Since 0 is less than 5, we round down to the nearest ten, which means 700 rounded to the nearest ten is 700.