Exam style questions - Hodder Plus Home

2
y
7
6
5
4
3
2
1
A
b
Copy the diagram above and then draw on it all
the lines of reflection symmetry. [1]
3
–7 –6 –5 –4 –3 –2 –1
–1
0 1 2 3 4 5 6 7 x
–2
–3
–4
–5
–6
–7
a Reflect triangle A in the y axis. Label your
triangle B. [2]
b Reflect triangle A in the line y = 1. Label your
triangle C. [2]
The end of the prism in the diagram is an
equilateral triangle.
How many of planes of symmetry does the
prism have [1]
4 Complete the pattern so that the horizontal and
vertical lines are lines of reflection.
12 Percentages
Here is an exam question …
A school has 900 students. 42% of the students are
boys.
a What percentage of the students are girls [1]
b What fraction of the students are boys [1]
c 12% of the students are in year 11.
How many students are in year 11 [2]
… and its solution
a 58% are girls
b 42% = 42
100
= 21
50
c 0.12 × 900 = 108
42 + 58 = 100
Cancel by 2.
12 × 900 = 10 800 and there are two figures
after the decimal point, giving 108.00 = 108.
Now try these exam questions
1 a Shade 75% of this shape. [1]
5 a
[4]
Shade 1 more square to give the shape 2 lines of
reflection symmetry. [1]
b Write 60%
i as a decimal.
ii as a fraction. [2]
2 List the following numbers in order, starting with
the smallest.
66%, 3 5 , 0.62, 0.59, 55% [3]
© Hodder Education 2011 Unit B
33