300
If you mean 278,447 then it is 280,000 to the nearest ten thousand
500
460
460
460
457 rounded to the nearest hundred place would be: 500. This is because the value of the tens place is "5" and when rounding anything equal to or greater than 5 gets rounded up while the rest gets rounded down.
457 rounded to the nearest 100th is 500. You would round up in this case because it's equal or more than 450.
457974 rounded to nearest thousand is 458000,because 974 is greater than 500 so it is rounded to 458000
What is the nearest 100 457
640
0.0109
500