Place Value: The place value of a digit in a number tells us the value of the digit based on its position in the number.

Face Value: The face value of a digit in a number tells us the value of the digit itself, regardless of its position.

Now let's find the difference between the place value of the digit 2 and the face value of the digit 9 in the number 72398.

Place Value of Digit 2:
The digit 2 is in the tens place in the number 72398, which means its place value is 2 * 10 = 20.

Face Value of Digit 9:
The digit 9 is in the units place in the number 72398, which means its face value is 9.

Difference:
To find the difference between the place value of 2 and the face value of 9, we subtract the face value from the place value: 20 - 9 = 11.

Therefore, the difference between the place value of digit 2 and the face value of digit 9 in the number 72398 is 11.

Explanation:
To understand why the answer is 11, we need to understand the concept of place value and face value.

In the number 72398, the digit 2 is in the tens place. The value of the digit 2 is determined by its position, which is the tens place. The tens place has a value of 10. So, the place value of the digit 2 is 2 * 10 = 20.

On the other hand, the digit 9 is in the units place. The value of the digit 9 is simply 9 itself, regardless of its position. So, the face value of the digit 9 is 9.

To find the difference between the place value of 2 and the face value of 9, we subtract the face value from the place value: 20 - 9 = 11.

Therefore, the difference between the place value of digit 2 and the face value of digit 9 in the number 72398 is 11.