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- 1. Understanding Whole Numbers Lesson 1-1
- 2. Vocabulary standard form – a number is written using digits and place value (the regular way to write numbers). expanded form – a number is written as a sum using the place and value of each digit.
- 3. Place Value Chart
- 4. How To Read a Large Number <ul><li>Numbers are grouped in sets of three (each set is called a period). </li></ul><ul><li>Only read three numbers at a time. </li></ul><ul><li>Say the name of the period that the numbers are in. </li></ul><ul><li>Say “and” for the decimal, but do not say “and” if there isn’t a decimal. </li></ul>
- 5. Example 4 , 658 , 089 Millions period Thousands period Ones period Four million, six hundred fifty-eight thousand, eighty-nine .
- 6. Number Lines Numbers towards the right on a number line are larger. As you move to the left on a number line, the numbers get smaller. What’s Bigger? 1 or -2? 1 is larger because it is to the right of the -2. What numbers are smaller than -2? -3 and -4 are both smaller than -2 because they are to the left of -2.
- 7. Comparing Numbers <ul><li>Line up the numbers vertically (up and down) by the ones place (or the decimal, if there is one). </li></ul><ul><li>Start at the left and compare the digits. </li></ul><ul><li>Move towards the right until you find a difference. </li></ul>
- 8. Just a Reminder… < means “less than.” > means “greater than.” = means “equal to.”
- 9. Example 45,312 45,321 45,312 45,321 1 is less than 2 <
- 10. Example 2 – Put the numbers in order from least to greatest. 321; 345; 354; 29; 1,013; 312; 332 321 345 354 29 1013 312 332 largest smallest 29 1,013 312 321 332 345 354 < < < < <
- 11. Homework Time <ul><li>Commonly Misspelled Numbers: </li></ul><ul><li>hundred </li></ul><ul><li>thousand </li></ul><ul><li>eight </li></ul><ul><li>forty </li></ul><ul><li>ninety </li></ul>

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