Transcript Factor Tree PowerPoint - Trumansburg Central School

Click mouse to continue
GROWING A
FACTOR TREE
Or
Or
Can
think
You
might
Youyou
might
of that
one 180
You
might
notice
notice
that
180
FACTOR
PAIR
we
has
aa ZERO
ZERO
in
see
that
180
hasCan
inis
forEVEN
180a?
its
ONES
its
ONES
an
grow
PLACE
which
PLACE
which
NUMBER
tree
of
means
it
is
aa
means
it
is
and
that be
the
This
should
multiple
multiple of
of 10.
10.
means
that
2
two
numbers
factors
SO…
isthat
aSO…
factor…
multiply
ofxx180?
10
•
=
10
•
=to180
180
together
give
2x•
=the180 ?
Product
10
x 18 =180.
180
Click mouse to continue
180
10
18
Click mouse to continue
180
NOW
You have
to find
FACTOR
PAIRS
for
10
and
18
10
18
We “grow” this
“tree” downwards
since that is how we
write in English (and
we can’t be sure how
big it will be - we
could run out of
paper if we grew
upwards).
Click mouse to continue
180
Find factors
for 10 & 18
18
10
2 x 5 = 10
6 x 3 = 18
2
5
6
3
Click mouse to continue
Since
2 and
3 and
ARE
5 are
PRIME
WE
NUMBERS
they do not
DONE
grow “new
branches”.
???just
They
grow down
alone.
180
18
10
2
5
6
3
Since 6 is NOT a
prime number it is a
COMPOSITE
NUMBER - it
still has factors.
Since it is an
EVEN
NUMBER we see
that:
6 = 2 x3•
2
5 2 3 3
Click mouse to continue
… and if
we flip it
over we
can see
why it is
called a
tree
2
2
5 2 3 3
5
3
6
10
18
180