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Lesson 5-2 Pages 205-209

Lesson 5-2 Pages 205-209. Rational Numbers. Lesson Check 5-1. What you will learn!. How to write rational numbers as fractions. How to identify and classify rational numbers. Vocabulary. What you really need to know!.

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Lesson 5-2 Pages 205-209

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  1. Lesson 5-2 Pages 205-209 Rational Numbers Lesson Check 5-1

  2. What you will learn! • How to write rational numbers as fractions. • How to identify and classify rational numbers.

  3. Vocabulary

  4. What you really need to know! A number that can be written as a fraction is a rational number. Mixed numbers, integers, and many decimals can be written as fractions.

  5. What you really need to know! Other decimals such a  = 3.14592654…are infinite and nonrepeating. They are called irrational numbers.

  6. What you really need to know! Rational Numbers Integers -12 -5 1.8 Whole Numbers 6 15 0 0.7 -3.222… Natural Numbers 2 1 3

  7. 5 0 -7 4.5 3/4 3/4 4.5 -7 -7 0 0 0 5 5 5 5 Natural Numbers Whole Numbers Rational Numbers Integers

  8. Example 1: -(8 • 4 + 3)

  9. Example 2:

  10. Example 3: Write each decimal as a fraction or mixed number in simplest form. 0.26

  11. Example 4: Write each decimal as a fraction or mixed number in simplest form. 2.875

  12. Example 5: Write 0.39 as a fraction in simplest from. n = 0.39393939… 100n = 39.393939…

  13. Example 5: 99 99 100n = 39.393939… - n = 0.393939… 99n = 39

  14. Example 6: Identify all sets to which each number belongs. Natural, Whole, integer, and rational a. 15 Rational number

  15. Example 6: Identify all sets to which each number belongs. c. 0.3030303030… Rational number

  16. Page 207 Guided Practice #’s 3-11

  17. Read: Pages 205-207 with someone at home and study examples!

  18. Homework: Pages 208-209 #’s 12-48 even #’s 52-75 Lesson Check 5-2

  19. Page 733 Lesson 5-2

  20. Lesson Check 5-2

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