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GCSE

Mathematics A
General Certificate of Secondary Education J512




Mark Scheme for the Components

June 2009




512/MS/R/09

Oxford Cambridge and RSA Examinations

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OCR (Oxford Cambridge and RSA) is a leading UK awarding body, providing a wide range of
qualifications to meet the needs of pupils of all ages and abilities. OCR qualifications include
AS/A Levels, GCSEs, OCR Nationals, Key Skills, Entry Level qualifications, NVQs and
vocational qualifications in areas such as IT,…

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CONTENTS


General Certificate of Secondary Education

Mathematics A (J512)


MARK SCHEMES FOR THE COMPONENTS



Component/Content Page


J512/01 Paper 1 (Foundation Tier) 1

J512/02 Paper 2 (Foundation Tier) 5

J512/03 Paper 3 (Higher Tier) 9

J512/04 Paper 4 (Higher Tier) 13

Grade Thresholds 17




3

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J512/01 Mark Scheme June 2009


J512/01 Paper 1 (Foundation Tier)

1 (a) 8.5 1 0.2cm
(b) 5.4 1 0.2cm or SC1 if (a) and (b) both in mm
(c) R on radius 1
(d) C on circumference 1
(e) M on midpoint 1
(f) Line parallel to AB drawn 1…

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J512/01 Mark Scheme June 2009

7 (a) (i) Obtuse angle marked O 1
(ii) Reflex angle marked R 1
(b) 60 1 2
(c) (i) 40 1 `180' can be implied by correct
"line" with ("angles" or "180") 1 answer/working
Where totals are given with reasons
they must be correct…

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J512/01 Mark Scheme June 2009

13 (a) Consistent frequency scale or key 1

Heights ­ 8, 19, 11, 6, 3 1 In correct interval
C.Fs. ­ 8, 27, 38, 44, 47 Follow through using their `scale'
Freq densities ­ 4, 9.5, 5.5, 3, 1.5 Condone one error

Fully correct bar…

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J512/01 Mark Scheme June 2009

19 (a) 2 × 2 × 2 × 5 or 23 (×) 5 2 M1 for attempt at factor tree/ladder
or correct factor pair or better seen
Or SC1 for 2, 2, 2, 5 identified
(b) (i) 8 cao 2 B1 for 2 × 2…

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J512/02 Mark Scheme June 2009


J512/02 Paper 2 (Foundation Tier)

1 (a) 6 1
(b) 41 1
(c) 11 and 20 1
(d) 41 and 11 1
(e) 20 or 30 1
(f) 16 1
(g) 5 or 11 or 41 1
(h) 27 1

2 (a) (i) 12 1…

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J512/02 Mark Scheme June 2009

8 (a) 32 4 B1 for each correct box
1+3+5+7+9
72 1 + 3 + 5 + 7 + 9 + 11 + 13
(b) 6 2 B1 for each
-3 or (their6) ­ 9

9 (a) 4 5 6 7 8 1 Condone one…

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J512/02 Mark Scheme June 2009

14 (a) 29 2 M1 for 180 ­ 90 ­ 61 or 90 ­ 61
(Angles in) a triangle or 3 sided/ 1
angled shape add(s) up to 180
(b) 135 3 M1 for 360 ­ (120 + 100 + 95)
or 360 ­ 315…

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