Imani wants to center a poster on a college dorm room wall. The poster is 3578

inches wide, and the wall is 5118
inches wide.First Imani wants to get a rough idea of how many inches should be on each side of the poster. Round the dimensions to the nearest inch to quickly estimate how much space that will be. How many inches should that estimate be?
712
612
512
812
Now perform the exact calculation, and enter the number of inches on each side of the poster.
Inches on each side =

1 answer

Exact calculation:

(5118 - 3578) / 2 = 770

So, the exact calculation shows that there should be 770 inches on each side of the poster.