# June 08-paper 3&4-GCSE Maths-mark scheme

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GCSE
Mathematics A
General Certificate of Secondary Education J512
Mark Scheme for the Components
June 2008
J512/MS/R/08
Oxford Cambridge and RSA Examinations

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OCR (Oxford, Cambridge and RSA Examinations) is a unitary awarding body, established by the
University of Cambridge Local Examinations Syndicate and the RSA Examinations Board in
January 1998. OCR provides a full range of GCSE, A level, GNVQ, Key Skills and other
qualifications for schools and colleges in the United Kingdom, including those previously
provided by MEG and OCEAC. It is also responsible for developing new syllabuses to meet
national requirements and the needs of students and teachers.…read more

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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
J512/06 Internal Assessment (OCR marked tasks) 18
J512/06 Internal Assessment (OCR marked tasks) 21

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J512/01 Mark Scheme June 2008
J512/01 Paper 1 (Foundation Tier)
1 (a) One thousand three hundred (and) 1 All in words
thirty five
(b) 180 000 1
(c) 608 1
(d) (Two) hundred(s) 1 Accept 100, 200
2 (a) (i) 7.4 seen Condone freehand throughout this question
1 Accept 7.2 to 7.6
(ii) Midpoint marked on line 1 Could be a dot or a x or a bisector
(iii) Perpendicular drawn 1
(b) (i) Circle drawn (anywhere) 1 3.5cm r 4.…read more

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J512/01 Mark Scheme June 2008
4 (a) 605 1
(b) 484 1
(c) 17 1
(d) 1170 with working seen 3 Or M1 for 90(0) + 270 or 104(0) + 130
(at least 1 term correct and addition
attempted) and A1 if all digits are
correct in their part sums
Or M1 for 800 + 100 + 240 + 30 (ie 4
values added at least two terms correct)
A1 for all digits correct, and 3 terms
correct
Or if grid (`Chinese' method) used

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J512/01 Mark Scheme June 2008
7 (a) Third angle ticked 1
(b) 80 1
(c) 110 B3 Or M1 for 360 ­ 80 ­ 80 ­ 130 or 70
seen
And M1 dep for 180 ­ their 70
"quadrilateral" with "angles" or "360" R1 `360, 180' can be implied by correct
"line" with "angles" or "180" R1 Accept Interior + Exterior (angle) = 180
Where totals are given with reasons
they must be correct
8 4, 4 1,1
0, 5 1,1

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J512/01 Mark Scheme June 2008
14 (a) 1:4 1
(b) 50 2 250
M1 for (× 20) oe
100
(c) 300 3 M2 for 1.2(0) × 250 oe isw
Or M1 for 0.2(0) × 250 oe soi by 50
And M1(dep) for 250 + their(20%)
Or SC1 for answer of 200
15 (a) 0.25, ¼, 25% 2 M1 for 1 ­ (0.6 + 0.15) soi by 0.…read more

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J512/02 Mark Scheme June 2008
J512/02 Paper 2 (Foundation Tier)
1 (a) (i) 6 or 20 or 26 1
(ii) 9 1
(iii) 11 and 26 1
(iv) 51 and 26 1
(b) (i) 20 1
(ii) It divides by 5 1 Condone it ends in 0 or 5
It's in the 5 times table oe
(c) (i) 11 1
(ii) 11 goes into 33, 33 is in the 11 1
times table
2 (a) 20 1
(b) 9 1
(c) 22 to 26 2…read more

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J512/02 Mark Scheme June 2008
6 (a) (2, 3) and (-3, 4) 1+1 SC1 for C and D transposed
(b) E, F and G correctly plotted at 3 B1 for each point correctly plotted
(-5, -4), (1, -5) and (0, -3) ±2mm
7 (a) Correct net 3 B2 for correct net with lid or a net with
four correct rectangles
B1 for two or three correct rectangles
(b) (i) 27° 1
Angles in a triangle add up to 180 1
(ii) 70 FT2 M1 for…read more

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J512/02 Mark Scheme June 2008
13 (a) 60 1
(b) 180 1
(c) 60, 24 1+1 FT their (a) for 1st value
If 0,0 scored SC1 for 24 seen in part (c)
14 (a) Fully correct 2-way table 3 M2 for 2-way table with one of the four
demanded entries missing or incorrectly
attributed
eg Verses
1 2 3 4 5 6
M1 for 2-way table with two of the four
demanded entries missing or incorrectly
Lines 10 attributed
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