Place Value

So in fourth grade, we learn place value to the millions...needless to say some of us are whizzing right through this. So, the curriculum I use had telephone numbers in mind. Each student was to get three different phone numbers (minus the area code and no, they couldn't have my number!). Once they had their 7-digit phone numbers, they had to write these numbers in standard, written, and expanded form. They had a blast doing this!