Multiplying and Dividing Fractions Review

Fraction Rules

Multiplying Fractions

Mixed Numbers

Dividing Fractions

Surprise

100

What needs to be the same when you add and subtract fractions?

The denominator

100

$2/3 * 4/5$

$8/15$

100

$1 1/2 * 5$

$15/2 or 7 1/2$

100

What is the reciprocal of

$11/8$

$8/11$

100

What are the steps for multiplying fractions?

Multiply straight across (multiply numerators and multiply denominators)

200

How do we change a whole number into a fraction?

Put a 1 in the denominator, or put it over 1.

200

$3/5 * 7/8$

$21/40$

200

$5/6 * 1 1/3$

$10/9 or 1 1/9$

200

$3/8 -: 2/3$

$9/16$

200

Find the reciprocal of 14

1/14

300

3 word phrase to help us with dividing fractions.

Keep - Change - Flip

300

$4 * 7/8$

$7/2 or 3 1/2$

300

$4 1/2 -: 9$

$1/2$

300

$6 -: 5/8$

$48/5 or 9 3/5$

300

Solve and simplify.

2/11 + 5/33

1/3

400

When dividing fractions, you are changing into ______________________ fractions?

multiplying

400

It took Jason 2 5/6 hours to drive to the beach. It took Mary twice as long. How long did it take Mary to drive to the beach?

$17/3 or 5 2/3$

400

Joe has 7 1/2 gallons of paint. He plans on using 1 1/2 gallons in each room. How many rooms is he able to paint?

$5/1 or 5 rooms$

400

$1/2 -: 5/8$

$4/5$

400

Solve and simplify.

(2/3 x 4) + 1/3

3/1 or 3

500

What should you do first to mixed numbers when multiplying or dividing fractions?

Convert them to improper fractions.

Change them to improper fractions.

Make them improper fractionns.

500

$2/9 * 3/8$

$1/12$

500

$2 2/3 * 5 1/4$

$14$

500

$3/8 -: 7/12$

$9/14$

500

What is the name given to Holy Thursday, Good Friday, and the Easter Vigil?

Triduum