Exam style questions - Hodder Plus Home

4 ‘Doggy Planet’ sell pet goods by post.
They record the weight of each
package sent by post one day.
Calculate an estimate of the mean
weight of a package.
Weight of package (w kg)
Frequency
0 w < 5 6
5 w < 10 11
10 w < 15 23
15 w < 20 8
20 w < 25 2
[4]
5 The table shows the number of text messages received by each of 80 people in a single week.
Number of messages received
Frequency
1 to 20 12
21 to 40 31
41 to 60 22
61 to 80 11
81 to 100 4
Calculate an estimate of the mean number of messages received per person during the week. [4]
20 Pythagoras’
theorem
b a 2 = b 2 + c 2
= 4.6 2 + 5.0 2
= 46.16
a = 46.
16
a = 6.8 cm (to 1 d.p.)
Here is an exam question ...
Now try these exam questions
a Find the area of this triangle.
1 The diagram shows the cross section of the end of
a shed.
The shed is 180 cm wide at ED and AC. The
length of the roof AB is 110 cm. The height of the
5.0 cm
side AE is 2 m.
What is the maximum height of the shed [5]
4.6 cm
B
b Calculate the length of the hypotenuse of this
triangle. Give your answer to a sensible degree
A
C
of accuracy. [5]
... and its solution
a Area of triangle = 1 2
base × height
= 1 2
× 4.6 × 5.0
= 11.5 cm
E
D
© Hodder Education 2011 Unit A
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