200
Michelle wants to know the average number of miles she drives using one gallon of gasoline. She knows that she has driven 3,626 miles using 98 gallons of gasoline. She divides 3626 by 98 to find the average number of miles per gallon. Her result is 47. Use estimation to decide if Michelle's result is correct.
What is She is incorrect. The quotient can be estimated by rounding the number of miles driven to 3600 and the number of gallons of gasoline used to 100. Dividing 3600 by 100 results in a estimated average number of miles per gallon of 36. Michelle's result of 47 is too large to be correct.