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**Reading and Writing Large Numbers & Rounding Large Numbers**

Chapter 2 Lesson 1 and 2

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**Reading and Writing Large Numbers**

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**Place Value Every digit of a number has a place value**

The place value tells you how much a digit represents 13,587 5=500 3=3000

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**3 Ways to Write Numbers Word Form –Uses Words Number-word form**

Thirty six thousand, five hundred thirteen Number-word form 122 thousand Standard Form Numbers only 36,513 You will be asked to use all 3 ways!

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**Try it Write the number in word form Write in Number-Word form**

13,587,003 Thirteen million, five hundred eighty seven thousand, three Write in Number-Word form 93,000,000,000 93 billion Write in standard form five million, one hundred eight thousand, nine 5,108,009

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**Rounding Large Numbers**

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**Why Rounding? Working with large numbers can be inconvenient**

Can give you a close answer when the exact number is not needed

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**How do you round? You will be asked to round to a certain place value**

Round 113,868 to the hundreds place Box number in place value 113,868 Look at number to the right of the box

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113,868 If the number to the right of the box is 5 or higher, change the name Less than 5 stays the same All numbers to the right of the box turn to zeros 113,900

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**What about this? Round to the given place 1,698,017 – ten thousand**

1,700,000 How did you get this number?

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