700
700
400
To the nearest hundred: 5,700
700
200,000
0.0046
65.9
82.375
-- The next even hundred above it is 100. -- The next even hundred below it is zero. -- 23 is closer to zero than it is to 100 . -- 23 rounded to the nearest hundred is zero.
438 rounded to nearest hundered
If you round it up, you get 8600000.
279 rounded to the nearest hundred is 300. When rounding, you look at the digit in the tens place, which is 7 in this case. Since 7 is 5 or greater, you round up to the next hundred.