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Multiplying fractions
is
easy
; you just
multiply
the
top
numbers together and the
bottom
numbers together, and you have your
answer.
Adding fractions
can be done in a similar way, by adding the
top
numbers together and keeping the same
bottom
number in the answer.
If fractions have the same
bottom numbers
, they can be added by just adding the
top numbers
together and keeping the same
bottom number
in the answer.
When the numerator and denominater have the same number it makes an whole
Likewise, if you add
5
over
16
and
2
over
16
, you get
7
over
16.
A
'denominator'
is just a fancy math word for the
bottom
number of a
fraction.
Subtracting
fractions with the same
bottom numbers
is easy, and the process is the same as
adding
them.
The term
'common'
in
'common denominator'
means that they're the
same.
Fractions with the same
bottom
numbers are referred to as
'like'
fractions.
If you
add one-half
and
one-half
, you get a
whole.
In math language, this process of changing 'unlike' fractions into 'like' fractions is called "
finding a common denominator
".
The only way to add
'unlike'
fractions without doing the division first, is to
change
them so that they do have the same
bottom
numbers.
The term for problems like this is
âAdding
or
Subtracting âLikeâ Fractionsâ.
multiplying
fractions are really easy you just multiply the
numerator
by the
numerator
and
denominater
by the
denominator
Multiplying integers
which are
whole numbers
by
fracation
is different from having
2
fractions
To
multiply
a integer by
fraction
you
multiply
the numirator and the integer and you
keep
the denominator the
same
1 x 3/4=
0.75
and
3/4
4 x 6/7 =
24/7