Fractions And Percentages Worksheet Page 19
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28MEP Pupil Text 11
11.6
1
1
9.
In a school
of the children eat school dinners,
bring packed lunches and the
3
2
rest go home. What fraction of the children go home for lunch?
1
1
10.
A shopper buys
1
kg of Golden Delicious apples and
1
kg of Cox's apples.
4
3
Find the total weight of the apples bought.
11.7 Multiplication and Division of Fractions
Multiplication
3
2
Consider finding
of
by starting with this rectangle.
4
3
2
First select
of the rectangle, as shown by the shaded area.
3
3
Then select
of the shaded area.
4
3
2
6
1
This represents
of
of the original rectangle, that is,
or
of the original rectangle.
4
3
12
2
3
2
3
2
×
Now
of
is the same as
, so
4
3
4
3
3
2
6
1
×
=
=
.
4
3
12
2
When multiplying two fractions, the numerators (top parts) should be multiplied together
to give the numerator of the result. Similarly, the two denominators should be multiplied
together.
×
a
c
a
c
×
=
In general terms,
×
b
d
b
d
Worked Example 1
3
5
×
=
?
4
7
Solution
×
3
5
3
5
×
=
×
4
7
4
7
15
=
28
252
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