1. Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall. 2.5 Dividing Fractions and Mixed Numbers

2. Martin-Gay, Basic Mathematics, 4e 22 Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall. Finding Reciprocals of Fractions DefinitionExample Reciprocals: Two numbers are reciprocals of each other if their product is 1. Reciprocal of a fraction: To find the reciprocal of a fraction, interchange its numerator and denominator. p 152

3. Martin-Gay, Basic Mathematics, 4e 33 Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall. Examples Find the reciprocal of each number. (Similar to Practice 1-4) a. b. c. d. p 152

4. Martin-Gay, Basic Mathematics, 4e 44 Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall. Dividing Fractions p 152

5. Martin-Gay, Basic Mathematics, 4e 55 Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall. Examples Divide and simplify. a. b. p 152

6. Martin-Gay, Basic Mathematics, 4e 66 Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall. P 153 What is dividing? How many 5s are there in 10? Dividing Fractions How many are there in 2 6

7. Martin-Gay, Basic Mathematics, 4e 77 Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall. Practice Problems Divide and simplify. 5. 6. 7. P 153 Dividing Fractions

8. Martin-Gay, Basic Mathematics, 4e 88 Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall. Dividing Fractions and Mixed Numbers or Whole Numbers To divide with a mixed number or a whole number, first write the mixed or whole number as a fraction and then divide as usual. P 154

9. Martin-Gay, Basic Mathematics, 4e 99 Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall. Examples Divide and simplify. a. b.

10. Martin-Gay, Basic Mathematics, 4e 10 Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall. Examples Divide. a. b. is undefined

11. Martin-Gay, Basic Mathematics, 4e 11 Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall. Practice Problems Divide and simplify. 8. 9. 10. Do Practice 11 and 12 on page 160. Dividing Fractions and Mixed Numbers

12. Martin-Gay, Basic Mathematics, 4e 12 Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall. Practice Problems Divide and simplify. 11. 12. Dividing Fractions and Mixed Numbers

13. Martin-Gay, Basic Mathematics, 4e 13 Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall. Examples If there are grams of fat in 4 ounces of lean hamburger meat, how many grams of fat are in an ounce? There are grams of fat in 4 ounces.

14. Martin-Gay, Basic Mathematics, 4e 14 Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall. Practice Problem 13 SOLUTION A designer if women’s clothing designs a woman’s dress that requires 2 1/7 yards of material. How many dresses can be made from a 30-yard bolt of material? Solving Problems by Dividing Fractions

15. Martin-Gay, Basic Mathematics, 4e 15 Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall. DONE