2100
400
It is: 700
170
8,947 is already rounded to the nearest tenth, and to the nearest whole number as well.
2090
1300
It is 2,300
400
It is: 700
To round 31817 to the nearest hundred, look at the tens digit, which is 1. Since 1 is less than 5, you round down. Therefore, 31817 rounded to the nearest hundred is 31800.
20
It is: 254.3
9000
5000
100
8910
5