Final answer:
The Campbell family drove a total of 90 miles during their trip (67 miles to Olympia National Park and 23 miles back). To solve this, you add the two distances together.
Step-by-step explanation:
The Campbell family's total driving distance is the sum of the distance driven to Olympia National Park and the distance back home. Since they drove 67 miles to the park and 23 miles back home, the total distance driven is a straightforward addition problem.
To calculate the overall distance, we use the number sentence:
67 miles + 23 miles = Total miles driven.
When we add 67 and 23, the sum is 90 miles. This is the total distance the Campbell family drove during their trip to Olympia National Park and back.
The concept being applied here is basic arithmetic addition, which is very commonly used to resolve problems involving distances covered in multiple segments of a trip. The question can help students understand how practical and common these mathematical operations are in everyday situations.