5th grade math
posted by pat on .
what is the range for the following number? 900,700,500,600,600,300,600,200,100,200? pleASE! EXPLAIN HOW TO SOLVE THE PROBLEM..

The range is the difference between the largest and the smallest numbers.
900  100 = 800
http://www.purplemath.com/modules/meanmode.htm 
a new fence is needed for the perimeter of a rectanglar horse pasture. the oastyre measure 78 feet by 68 feet. How many feet of fencing are needed for the pasture?