Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall. Chapter 2 Multiplying and Dividing Fractions

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

Martin-Gay, Developmental Mathematics, 2e 33 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.

Martin-Gay, Developmental Mathematics, 2e 44 Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall. Examples Find the reciprocal of each number. a. b. c.

Martin-Gay, Developmental Mathematics, 2e 55 Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall. Dividing Fractions

Martin-Gay, Developmental Mathematics, 2e 66 Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall. Examples Divide and simplify. a. b.

Martin-Gay, Developmental Mathematics, 2e 77 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.

Martin-Gay, Developmental Mathematics, 2e 88 Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall. Examples Divide and simplify. a. b.

Martin-Gay, Developmental Mathematics, 2e 99 Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall. Examples Divide. a. b. is undefined

Martin-Gay, Developmental Mathematics, 2e 10 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.