Making sense of

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Making sense of
Fractions
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Look at the shaded part in these shapes
A fraction is part of a whole.
and
are called
Fractions
3
Each part is called one sixth.
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4
This pie is divided into 6 equal parts.
The remaining part is
5
This pie is divided into 8 equal parts.
If we cut off
The remaining part is
6
A Fraction is made up of 2 numbers
The top number is called the
numerator
The bottom number is called the
denominator
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What fraction of this shape is shaded?
3
4
2
1
3
1
2
numerator
Tells us how many parts are shaded.
denominator
Tells us in how many parts the shape is divided.
8
C
A
B
D
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What fraction of each of these shapes is red?
What fraction of each of these shapes is blue?
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Equivalant Fractions
Look closely at the shaded parts
Although divided into different parts, the same
area is shaded.
If we multiply the numerator and the denominator
by the same number we get
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Equivalant Fractions
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Are these equivalent fractions ?
x ? ?
Yes
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3
5
12
6
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When fractions have a common denominator it is
easier to
compare them
Which is the biggest fraction?
or
x5

x5
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When fractions have a common denominator it is
easier to
add them
x4
x5


x4
x5
We need to find equivalent fractions with a
common denominator. The Least Common Multiple of
4 and 5 is 20.


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When fractions have a common denominator it is
easier to
subtract them
x5
x2


x5
x2
We need to find equivalent fractions with a
common denominator. The Least Common Multiple of
5 and 2 is 10.
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Equivalant Fractions
Look closely at the shaded parts
Although divided into different parts, the same
area is shaded.
is a fraction in its lowest terms

If we divide the numerator and the denominator by
the same number we also get
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When the numerator is less than the
denominator
The fraction is called an Proper Fraction It is
always less than the whole.
e x a m p l e s
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When the numerator is greater than
the denominator
The fraction is called an Improper Fraction It
is always more than the whole.
e x a m p l e
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Improper Fractions can be changed into Mixed
Numbers
r 1
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Lets play some
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What fraction of the people have..
Well done!
purple trousers ?
Red jumpers ?
blue trousers ?
blonde hair ?
black hair ?
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What fraction of the Fripples is .
spotted
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What fraction of the Fripples is .
striped
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What fraction of the Fripples wear
sunglasses
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What fraction of the Fripples is
purple
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What fraction of the Fripples have ..
Curly hair
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What fraction of the Fripples have ..
Short straight hair
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The End