In the Warm Up for this lesson, Alberta's area codes were discussed and you were challenged to determine how many new phone numbers were created in Alberta by adding the 587 area code.

Can you solve this problem using what you have learned in this lesson? Read Example 3 to see how it is done.

 

Find the number of 10 digit phone numbers beginning with the area code 587.

The total number of possible phone numbers with area code 587 is 10 000 000.