2,826 rounded to the nearest hundred

2,800

Step-by-step explanation:

Unit - 1

Tens - 10

Hundreds - 100

Thousands - 1,000

From the number, the hundred number is 8.

So look at its right side if the number 5 or above (means you have to add the main number) or not (leave it).

2,826

The 2 (in italic) is lower than 5 so just leave 8 alone. Put all the numbers on the right into 0's.

2,800

use this formula:

p(a\b) = p(a and b)/p(b).

take it from here.