body{margin:0;} noscript{z-index: 10000; position: fixed; display: block; height: 100%; width: 100%; background: #fff;} noscript .fa{font-size: 40px; display:block; color: #daa520;} noscript div{margin-top: 6%; padding-left: 20px; padding-right: 20px; text-align: center;} ! You must have JavaScript enabled to use this site.

Glencoe Math: Course 1, Volume 1

GM

Glencoe Math: Course 1, Volume 1 View details

7. Divide Fractions

Finish the assignment

Continue to next subchapter

Exercise 3 Page 321

Rewrite the whole number as a fraction. Then multiply the first fraction by the reciprocal of the second fraction.

1/12

Practice makes perfect

Before we evaluate the expression, let's first rewrite the expression so that all of the numbers are fractions.

3/4 ÷ 9

Write as a fraction

3/4 ÷ 9/1

Next, recall that dividing fractions is the same as multiplying the first fraction by the reciprocal of the second fraction. 3/4 ÷ 9/1=3/4 * 1/9 When multiplying fractions, remember that the product of two fractions is equal to the product of the numerators over the product of the denominators.

3/4 * 1/9

Multiply fractions

3 * 1/4 * 9

Multiply

3/36

a/b=.a /3./.b /3.

3/3/36/3

Calculate quotient

1/12

Checking Our Answer

We can check our answer by substituting the obtained result for the first fraction and multiplying it by the second fraction. The product we get should be the dividend of the given expression.

1/12 * 9/1 ? = 3/4

Multiply fractions

1 * 9/12 * 1 ? = 3/4

Identity Property of Multiplication

9/12 ? = 3/4

a/b=.a /3./.b /3.

9/3/12/3 ? = 3/4

Calculate quotient

3/4 = 3/4 ✓

Since both sides are the same, we know that our answer was correct!

Subchapter links

Guided Practice p.320

Independent Practice p.321-322

H.O.T. Problems p.322

Standardized Test Practice p.322-324

Extra Practice p.323

Common Core Review p.324