Check out this YouTube recording of a phone call between a customer and Verizon, a phone company in the US. It really shows the importance of knowing place value in decimals!!!
Here is an excerpt from the customer's blog:
I have a Verizon unlimited data plan in the U.S. and recently crossed the border to Canada. Prior to crossing the border I called customer service to find out what rates I'd be paying for voice and data. The data rate I was quoted was ".002 cents per kilobyte."
I received my bill and was charged $.002/KB - which is dollars - "point zero zero 2 dollars per kilobyte".
My bill for my data usage in Canada was therefore much greater than I had expected - using the quote I was provided before my usage.
I have tried to resolve this issue with customer service reps on the phone, but no one seems to see the difference between ".002 cents" and ".002 dollars".