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Key
Idea
The place and
period of a digit
determines its
value. |
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Vocabulary
• expanded form
• standard form
• word form
• digits
• place value
• period |
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Place Value Through
Billions |
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What
are some ways to represent
large numbers? |
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At
times, the planet Pluto is 4,539,000,000
miles from the sun. |
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Here
are different ways to represent
4,539,000,000. |
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| Expanded
form: |
4,000,000,000
+ 500,000,000 + 30,000,000 +
9,000,000 |
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| Standard
form: |
4,539,000,000 |
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| Word
form: |
four
billion, five hundred thirty-nine million |
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Digits
are the symbols used to show numbers:
0, 1,
2, 3, 4, 5, 6, 7, 8, and 9. In 4,539,000,000,
the digit
5 has a place
value in the hundred millions,
so its
value
is 500,000,000, which is 500 million.
Each group of three digits starting
from the right
forms a period.
Periods are separated by commas. |
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Talk About It |
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| 1. |
How do you know the expanded form of
4,539,000,000 includes 30,000,000? |
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| 2. |
What is the word form for
784,000,506,000? |
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