Lesson 3-5

Example 1  Problem-Solving Investigation
Jonathon is trying to decide between to vacation deals.  The first, a trip to Florida, costs $249.95, and the second, a trip to California, costs $324.98.  About how much more will Jonathon spend if he chooses the trip to California?

EXPLORE	You know the cost of each trip.  You need to find out about how much more the trip to California costs than the trip to Florida.	
PLAN	Since an exact answer is not needed, estimate.	
SOLVE	$324.98 - $249.95  $325 - $250 or $75	
CHECK	You know that subtraction and addition are inverse operations.  Since $250 + $75 = $325, the answer is correct.