# november 2010 mark scheme

mark scheme unit 3 november 2010 paper 14

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Mark Scheme (Results)
November 2010
GCSE
GCSE Mathematics (5384H)
Paper 14H

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Edexcel is one of the leading examining and awarding bodies in the UK and throughout the world. We provide a wide range of qualifications
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Through a network of UK and overseas offices, Edexcel's centres receive the support they need to help them deliver their education and
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For further information, please call our GCE line on 0844 576 0025, our GCSE team on 0844 576 0027, or visit our website at

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GCSE MATHEMATICS 2381 (MODULAR)
NOTES ON MARKING PRINCIPLES
1 Types of mark
M marks: method marks A marks: accuracy marks
B marks: unconditional accuracy marks (independent of M marks)
2 Abbreviations
cao ­ correct answer only ft ­ follow through isw ­ ignore subsequent working
SC: special case dep ­ dependent oe ­ or equivalent (and appropriate)
indep - independent
3 No working
If no working is shown then correct answers normally score full marks
If no working is shown then incorrect (even though nearly…read more

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GCSE MATHEMATICS 2381 (MODULAR)
5 Follow through marks
Follow through marks which involve a single stage calculation can be awarded without working since you can check the
answer yourself, but if ambiguous do not award.
Follow through marks which involve more than one stage of calculation can only be awarded on sight of the relevant
working, even if it appears obvious that there is only one way you could get the answer given.…read more

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GCSE MATHEMATICS 2381 (MODULAR)
5384H/14H
Question Working Answer Mark Notes
1 (a) 3 × 100 300 2 M1 for 3 × 100 or 100 ÷ 6 × 18 oe
A1 cao
(b) 2÷½×6 24 2 M1 for 2 ÷ ½ × 6 oe
A1 cao
y
2 (a) y=x
2 B2 cao
(B1 for shape in the correct orientation
or for shape above the line, elongated or
shortened
by one square with either top or bottom in the
correct position and correct orientation )

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GCSE MATHEMATICS 2381 (MODULAR)
5384H/14H
Question Working Answer Mark Notes
5 2.42927(0474) 2 B2 for 2.42927 ...
(B1 for 19.56 or 8.0518
or 2.43 or 2.429 or 2.4292 or 2.…read more

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GCSE MATHEMATICS 2381 (MODULAR)
5384H/14H
Question Working Answer Mark Notes
9 (a) k ­ 5 = 24 ÷ 3 13 2 M1 for k ­ 5 = 24 ÷ 3 or 3 × k ­ 3 × 5 oe
k = 8+5 A1 cao
(b) x2 = 162 ÷ 2 9 2 M1 for 162 ÷ 2 or 81 seen
x = 81 A1 for 9 (accept ­9 or ± 9 )
-16 -15 -15
10 = 14. 56 × 10 1.…read more

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GCSE MATHEMATICS 2381 (MODULAR)
5384H/14H
Question Working Answer Mark Notes
14 Angle ADC = 180 - 128 = 52° 104 2 M1 for valid method to get angle ADC or 128 × 2
x = 2 × 52° or 256° seen (can be on the diagram)
or reflex angle AOC = 256°
x = 360 - 256 A1 cao
15 AB = 8cos 37° 6.38 ­ 6.39 3 AB
= 8 × (0.7986...) M1 for cos37 =
8

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GCSE MATHEMATICS 2381 (MODULAR)
5384H/14H
Question Working Answer Mark Notes
18 a × (3 + n) = 6a - n 3a 4 M1 for multiplying both sides by 3+n
3a + an = 6a - n n= M1 for correctly isolating `terms in n' from
a +1
an + n = 6 a - 3a 6a - n = any one of a( 3 + n), 3a + an,
n(a + 1) = 3a 3a + n or 3 + an
M1 for correctly factorising…read more

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GCSE MATHEMATICS 2381 (MODULAR)
Further copies of this publication are available from
Edexcel Publications, Adamsway, Mansfield, Notts, NG18 4FN
Telephone 01623 467467
Fax 01623 450481
Email [email protected]
Order Code UG025847 November 2010