Introducting fractions
Transcript of Introducting fractions
Fractions
Scary? No!We use fractions every day ……
Fractions
3
4
Numerator
Denominator
How many pieces altogether?
Fractions
10
How many pieces altogether?
Fractions
10
How many pieces altogether?
FractionsHow many pieces have I got?
10
How many pieces altogether?
FractionsHow many pieces have I got?
10
How many pieces altogether?
FractionsHow many pieces have I got?
10
How many pieces altogether?
FractionsHow many pieces have I got?
10
How many pieces altogether?
FractionsHow many pieces have I got?
10
How many pieces altogether?
FractionsHow many pieces have I got?
10
How many pieces altogether?
FractionsHow many pieces have I got?
10
How many pieces altogether?
FractionsHow many pieces have I got?
7
10
How many pieces altogether?
FractionsHow many pieces have I got?
FractionsColour in the right fraction for each shape
4
7
2
7
6
7
Fractions4
12
3
8
7
14
FractionsIdentify right fraction for each shape
Fractions
Questions
What fraction of snowmen have green hats?
Understanding equivalent
fractions
Are they equivalent fractions?
1
43
12
Yes they are
equivalent fractions.
1
43
12
Are they equivalent fractions?
1
32
5
No, they are not equal.
They are not equivalent fractions.
1
32
5
Can you work out a
strategy for deciding
whether they are
equal?
What ever you do to the top number . .
You must do to the bottom number.
1
55
20
divide by 5
divide by 5
What ever you do to the top number . .
You must do to the bottom number.
9
153
5
multiply by 3
multiply by 3
Sometimes you might need to work out
equivalent fractions in
three steps.
6
8
48
643
4
Finding the fraction
of a whole number
Calculate a fraction of a whole
number
Example :
To find of 201
4
1
4of 20
so
20 divided by 4
equals 5
1
4of 20
20 4 5
5
2
6of 30
30 6 5
10
and another example5 X 2 = 10
Fractions
Great fun!