Multiplying Fractions

Multiplication means "of"

meanstherefor

=

Multiplying FractionsTo multiply fractions:

multiply the numerator times the numeratorand

the denominator times the denominator

Try some:

1.)   2.)

Don't forget to simplify your answer. All fractions should be in lowest terms!

There are two ways to do this.

Method 1: Divide by the GCF after multiplying

 

3.) 4.)

Method 2: Simplify before multiplyinglook at the numerator of one fraction and the denominator of the other fractionfind a common factor of each and divide each by that factormultiply your new numbers

5.) 

6.)

Sometimes you can divide both pairs of denominators and numerators by a common factor before you multiply.

7.) 8.)

 

Multiplying Mixed Number

Review: Change each mixed number or whole number to an improper fraction.

1.)  2.) 63.)

To multiply mixed numbers you must change the numbers to improper fractions and then multiply.

1.)

3.)

2.)

4.)

Word problems

1.) Anna wants to make 4 sets of curtains. Each set requires yards of fabric. How much fabric does she need?

2.) If of Patekville is considered middle class and the population is 2,000, how many people are considered middle class?

1.) 2.)

Demonstrate Understanding

3.) Robin has read of a book. Batman said he read as much as Robin. What fraction of the book has Batman read?

4.) A bike is on sale for of its original price. If the original price is $303, what is the sale price?