Answer:
make the numbers that end in 1 through 49 into the next lower number that ends in 00. Numbers that have the last two digits of 50 or more should be rounded up to the next even hundred.
Explanation:
For example,
314 rounded to the nearest hundred would be 300. (rounding down)
750 rounded to the nearest hundred would be 800. (rounding up)
675 rounded to the nearest hundred would be 700. (rounding up)
either way your answer will end in _00.