Transcript Multiplying With Fractions

On page, write each
fraction in simplest
form.
1.
2.
3.
4.
5.
_5_
10
_9_
15
_28_
42
_90_
100
_18_
24
Multiplying
With
Fractions
Just Follow These
Easy Steps!

Multiply the numerators = new
numerator.
Multiply the denominators = new
denominator.
Simplify.

The word “OF” = multiply!


Example 1
5 x 3
15
=
32
8
4
There are no common factors for
15 and 32, so this fraction cannot
be simplified.
Example 2
3
4
2
6
1
x
=
=
9
36
6
This fraction can be reduced. Divide the
numerator and denominator by the GCF,
which is 6.
Multiplying by a Whole
Number
If you want to multiply a fraction by a
whole number, turn your whole number into
a fraction by placing a 1 as the
denominator. If your answer is improper,
divide the bottom into the top.
4
20
80
x
= 5 = 16
5
1
Example 3
15
1
5
15
of
=
=
1
6
6
2
15 and 6 have a GCF of 3.
2
2 5
4
1
Five halves is improper, so we
divide the bottom into the top.
2
1
2
Example 4
A piece of green ribbon is _5_ yard
6
Long. A piece of yellow ribbon is 9
times longer. How long is the yellow
7
ribbon?
6 45
9
5
45
42
x
=
1
6
6
3
7
7
3
6
1
2