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Paper 1:<br />
Arithmetic<br />
Let’s Learn!<br />
Percentage of a quantity<br />
Percentage Unit 10<br />
1 There were 400 seats on an aeroplane. 60% of the seats were in economy<br />
class. How many seats were in economy class?<br />
Method 1<br />
400 seats<br />
29 15% × 440 =<br />
60% (? seats)<br />
100% 400 seats<br />
400<br />
1%<br />
100 = 4 seats<br />
60% 60 × 4 = 240 seats<br />
There were 240 seats in economy class.<br />
100% of the seats is the<br />
total number of seats.<br />
30<br />
6 5 7 4<br />
× 3 1<br />
Curriculum objective:<br />
Solve problems involving the calculation of<br />
Show<br />
percentages [for example, of measures, <strong>and</strong> such<br />
your<br />
method<br />
as 15% of 360] <strong>and</strong> the use of percentages for<br />
comparison.<br />
1 mark<br />
2 marks<br />
Method 2<br />
60% of seats = 60% of 400<br />
= 60<br />
100 × 400<br />
= 60 × 4<br />
= 240<br />
There were 240 seats in economy class.<br />
77<br />
(M)UKINPB5B_U10.indd 77<br />
Pupil Textbook 5B, Unit 10, Percentage (page 77)<br />
18/6/15 4:16 pm<br />
*<br />
All questions were taken from the 2016 Key Stage 2 national test papers<br />
Paper 2: Reasoning<br />
examples
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