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DO NOW. For 902,798 write the digit in the hundreds place 6 X 2 Can 351 be divided evenly by 2 80 / 8 What is the time 3 hours after 9 pm. Place Value to the billions, whole numbers, standard notation and base systems . August 28, 2013. What is place value? .

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  1. DO NOW • For 902,798 write the digit in the hundreds place • 6 X 2 • Can 351 be divided evenly by 2 • 80 / 8 • What is the time 3 hours after 9 pm

  2. Place Value to the billions, whole numbers, standard notation and base systems August 28, 2013

  3. What is place value? • Place value chart- shows the value of the digits in a number • Period- in greater numbers each group of three is divided with a comma is called a period • Place value- name and value of a number in a certain position • Standard form- is the way a number is commonly written

  4. Place value to the billions

  5. Pattern? • When the number goes from ones to tens it is multiplied by 10 • When the tens are multiplied by 10 it becomes 100. • When the hundreds are multiplied by ten it becomes 1000.

  6. Practice • In your groups using the unit cubes, display these numbers and draw them as well as you can in your journals. • 1,532 • 25 • 862 • 712

  7. What is a base system? • We use the base system of 10. • This means that in the number 456 • There are 6 ones (1 X 6) • The value in the tens is 50 (5x10) • The value in the hundreds is 400 (4*100) • Each number gets multiplied by 10 to find its value in a number.

  8. Base systems • Why do we use them? • Does it make our lives easier? Yes? No? • Could you figure out a different base system?

  9. What is or isn’t a number • 123,456,789 – yes • 012,345,678- No, numbers can not start with a zero in the front

  10. Break these numbers into periods • 751,156,456 • 1,458,753,159 • 125,456 • 852,741,963

  11. Write these numbers in standard notation • Five hundred sixty two • Two thousand three hundred seventy one • Five hundred seventy two thousand one hundred ninety five

  12. What is in the _____ place? • 156 • 845,156,123 • 95,874,563,145 • 25 • 863,456,120

  13. Homework • Place value practice: phoney baloney, September star stinkers

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