Transcript Simplifying Fractions

Simplifying Fractions
Objective: find an equivalent
fraction which uses the lowest
numbers.
Simplifying is like finding an
equivalent fraction.
So remember, what ever we do
to the top number we must do
to the bottom number.
6
10
So here’s an equivalent
fraction…… let’s multiply top
and bottom by 3…..
times 3
6
18
10
30
times 3
To simplify a fraction we must
change it.
6
18
10
30
So let’s try dividing.
Divide by 2
6
3
10
5
Divide by 2
Yes. We have simplified this
fraction.
6
3
10
5
Here’s another
8
14
Can we divide 8 and 14 by 2?
8
14
divide by 2
divide by 2
4
7
And that’s simplifying
8
14
4
7
Even when large numbers are
involved, you still follow the
same rules.
18
36
Even when large numbers are
involved, you still follow the
same rules.
18
36
Let’s try dividing by 2
Let’s try dividing by 2
9
18
But we’re not there yet!
We can simplify further.
We can make these numbers smaller
18
36
Let’s try dividing by 2
Let’s try dividing by 2
9
18
What can we divide
9 and 18
by?
18
36
Let’s try dividing by 2
Let’s try dividing by 2
9
18
Start with the top number itself.
Let’s try dividing top and bottom
by 9
18
36
Let’s try dividing by 2
Let’s try dividing by 2
9
18
Start with the top number itself.
Let’s try dividing top and bottom
by 9
18
36
Let’s try dividing by 2
Let’s try dividing by 2
9
18
Let’s try dividing by 9
Let’s try dividing by 9
1
2
It doesn’t matter how many
steps you take.
You keep dividing until you can’t
divide any more.
18
36
Let’s try dividing by 2
Let’s try dividing by 2
9
18
Let’s try dividing by 9
Let’s try dividing by 9
1
2
Try these in your notes
(a) 12
(b) 18
(c) 32
(d) 6
(e) 18
27
72
48
12
36
(f) 24
(g) 15
(h) 54
(i) 10
32
35
81
18
16
9
(m) 16
(n) 10
(o) 12
36
40
50
36
(k) 4
12
(l)
Simplify them
(j)
4
Fractions
Simplifying fractions
End of this
lesson