Place Value and the United States Postal Service Foundations of Algebra.

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Presentation transcript:

Place Value and the United States Postal Service Foundations of Algebra

United States Postal Service (USPS)

Brainstorming Go to List 5 Ways the Post Office uses numbers.

What do you think? Signs with postal rates (prices for stamps, Priority Mail, extra services, etc.) Mailing supplies (boxes, envelopes, padded envelopes, tubes, etc.) Stamps for collectors Forms for different types of mailing (certified mail, registered mail, etc.) Things on a letter (street numbers, apartment numbers, zip codes)

A typical letter A letter contains many numbers: Street Numbers House Numbers Apartment Numbers Zip Codes

What do you need to know about numbers? In order to correctly identify a number, we need to be able to read the number. This includes knowing about the place value of each digit in the number. What is place value? Place value is the value of where the digit is in the number, such as units, tens, hundreds, etc.

Place Value Chart Each set of three numbers is called a period (this is also where the commas go). Where does the decimal point go? All the way to the right.

What about some Zip Codes? Orefield? Schnecksville? Slatington? Allentown? Hollywood? – Eighteen Thousand, Sixty-Nine

Try some other numbers , ,023, ,400,500,600

Answers One Hundred Twenty-Three Thousand, Nine Hundred Eighty Eight Million, Twenty-Three Thousand, Four Hundred Ninety-Three Three Hundred Billion, Four Hundred Million, Five Hundred Thousand, Six Hundred 123,9808,023,493300,400,500,600

What about Decimals? Where is the decimal point? To the right of the Ones! We continue to in the other direction using the same words with a “ths” on the end.

Try this one!

What about these? 4, ,

Read this paragraph about the United States Postal Service and translate the following numbers. In 2011, the United States Postal Service employed a total of 551,570 people around the continental United States. It took 213,881 trucks to deliver more than 168,000,000,000 pieces of mail that year. That mail was sorted at the 35,756 post offices around the country. Pennsylvania has a total of 371 post offices in a total of 67 counties.