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Glencoe Math: Course 2, Volume 1

GM

Glencoe Math: Course 2, Volume 1 View details

8. Divide Fractions

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Exercise 21 Page 333

Dividing fractions is the same as multiplying the first fraction by the reciprocal of the second fraction.

1/2

Practice makes perfect

First, let's rewrite the mixed number as a fractions.

1 23/9 ÷ 1 19/3

a bc=a* c+b/c

1 * 3 + 23/9 ÷ 1 * 9 + 19/3

Multiply

3 + 23/9 ÷ 9 + 19/3

Add terms

53/9 ÷ 109/3

Now, recall that dividing fractions is the same as multiplying the first fraction by the reciprocal of the second fraction. 53/9 ÷ 109/3=53/9 * 3/109 When we multiply fractions, we need to remember that the product of two fractions is equal to the product of the numerators divided by the product of the denominators. Let's find the given product!

53/9 * 3/109

Multiply fractions

53 * 3/9 * 109

FracMultDenomToNumber

a/3* 3 = a

5/9 * 109

DenomMultFracToNumber

9 * a/9= a

5/10

a/b=.a /5./.b /5.

5 ÷ 5/10 ÷ 5

Simplify quotient

1/2

Subchapter links

Guided Practice p.330

Independent Practice p.331-332

H.O.T. Problems p.332

Standardized Test Practice p.332-334

Extra Practice p.333

Common Core Review p.334