# March 2009 AQA maths mark scheme

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Version : 1.0: 03.09
abc
General Certificate of Secondary Education
Mathematics 4307
Specification B
Module 1 Tier H 43051H
Mark Scheme
2009 examination - March series

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Mark schemes are prepared by the Principal Examiner and considered, together with the
relevant questions, by a panel of subject teachers. This mark scheme includes any
amendments made at the standardisation meeting attended by all examiners and is the scheme
which was used by them in this examination. The standardisation meeting ensures that the
mark scheme covers the candidates' responses to questions and that every examiner
understands and applies it in the same correct way.…read more

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Mathematics B, 43051H - AQA GCSE Mark Scheme 2009 March series
The following abbreviations are used on the mark scheme:
M Method marks awarded for a correct method.
A Accuracy marks awarded when following on from a correct method.
It is not necessary always to see the method. This can be implied.
B Marks awarded independent of method.
M dep A method mark which is dependent on a previous method mark being
awarded.

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Mathematics B, 43051H - AQA GCSE Mark Scheme 2009 March series
MODULE 1 HIGHER TIER 43051H
Note: Probability - Accept fraction, decimal or percentage. Do not accept ratio.
1(a) Correct basic shape of two way
M1
table of size 3 by 4
Correct labelling of colours A1
Correct labelling of numbers A1
Must be two way table or a complete
1(b) 5 correct entries B1
list of all 12 possibilities

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Mathematics B, 43051H - AQA GCSE Mark Scheme 2009 March series
4 Correct method seen eg
27
× 30 M1 4.05, 10.5 or 15.…read more

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Mathematics B, 43051H - AQA GCSE Mark Scheme 2009 March series
7 (1 × 0) + (2 × 1) + (6 × 2)
Condone omission of 1 × 0
+ (8 × 3) + (3 × 4) M1
Attempt at fx
or 2 + 12 + 24 + 12
their 50 ÷ 20 M1 dep
2.5 A1
1
8(a) Plotted at mid class intervals B1 ± sq
2
Heights correct and joined with a
`straight' line through their Ignore ends.…read more

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Mathematics B, 43051H - AQA GCSE Mark Scheme 2009 March series
1
11(a) 4.0 to 6.0 block of height 11 B1 ± sq
2
1
6.0 to 10.0 block of height 3 B1 ± sq
2
11(b) (0.5 × 8) + (0.…read more