Example Question #1 : Map 4th Grade Math
What is the length of a rectangular room with a perimeter of and a width of
We have the perimeter and the width, so we can plug those values into our equation and solve for our unknown.
Subtract from both sides
Divide by both sides
Example Question #2 : Map 4th Grade Math
David wants to put a fence around his backyard. How much fencing will he need if his backyard is by
The fence is going around the backyard, so this is a perimeter problem.
Example Question #3 : Map 4th Grade Math
If we wanted to make this angle into a straight line, how many more degrees would we need to add?
A straight line has a measurement of . We can subtract to find how much more we'd need to have a straight line.