Cambridge Assessment International Education Cambridge International General Certificate of Secondary Education. Published

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1 Cambridge Assessment International Education Cambridge International General Certificate of Secondary Education MATHEMATICS 0580/ Paper (Extended) MARK SCHEME Maximum Mark: 70 Published This mark scheme is published as an aid to teachers and candidates, to indicate the requirements of the examination. It shows the basis on which Examiners were instructed to award marks. It ds not indicate the details of the discussions that took place at an Examiners meeting before marking began, which would have considered the acceptability of alternative answers. Mark schemes should be read in conjunction with the question paper and the Principal Examiner Report for Teachers. Cambridge International will not enter into discussions about these mark schemes. Cambridge International is publishing the mark schemes for the series for most Cambridge IGCSE, Cambridge International A and AS Level components and some Cambridge O Level components. This document consists of 5 printed pages. UCLES [Turn over

2 Generic Marking Principles These general marking principles must be applied by all examiners when marking candidate answers. They should be applied alongside the specific content of the mark scheme or generic level descriptors for a question. Each question paper and mark scheme will also comply with these marking principles. GENERIC MARKING PRINCIPLE : Marks must be awarded in line with: the specific content of the mark scheme or the generic level descriptors for the question the specific skills defined in the mark scheme or in the generic level descriptors for the question the standard of response required by a candidate as exemplified by the standardisation scripts. GENERIC MARKING PRINCIPLE : Marks awarded are always whole marks (not half marks, or other fractions). GENERIC MARKING PRINCIPLE : Marks must be awarded positively: marks are awarded for correct/valid answers, as defined in the mark scheme. However, credit is given for valid answers which go beyond the scope of the syllabus and mark scheme, referring to your Team Leader as appropriate marks are awarded when candidates clearly demonstrate what they know and can do marks are not deducted for errors marks are not deducted for omissions answers should only be judged on the quality of spelling, punctuation and grammar when these features are specifically assessed by the question as indicated by the mark scheme. The meaning, however, should be unambiguous. GENERIC MARKING PRINCIPLE 4: Rules must be applied consistently e.g. in situations where candidates have not followed instructions or in the application of generic level descriptors. GENERIC MARKING PRINCIPLE 5: Marks should be awarded using the full range of marks defined in the mark scheme for the question (however; the use of the full mark range may be limited according to the quality of the candidate responses seen). GENERIC MARKING PRINCIPLE 6: Marks awarded are based solely on the requirements as defined in the mark scheme. Marks should not be awarded with grade thresholds or grade descriptors in mind. UCLES Page of 5

3 Abbreviations cao correct answer only dep dependent FT follow through after error isw ignore subsequent working or equivalent SC Special Case nfww not from wrong working soi seen or implied Question Answer Marks Partial Marks x x final answer B for 6x or x M 6 or better e.g Allow any correct common denominator 5k 7 5 cao A 6 m final answer M for correct first step e.g. 7m 9 + 7(a) C D = {0} 7(b) 7 8 (x + 5)(y + ) final answer B for y(x + 5) + (x + 5) or x(y + ) + 5(y + ) cao 6 M for r+t w, final answer r+t B for w nfww or 4.5 and 7.5 final answers B for.5 or.5 seen or M for ( 0.5) or ( + 0.5) 54.5 or 54.5 B for 5.5 or 5.46 to 5.47 or M for 80 sin (0.4) 6n 0 B for 6n + c or kn 0 (k 0) UCLES Page of 5

4 0580/ Cambridge IGCSE Mark Scheme October/Novembe Question Answer Marks Partiall Marks 4 Correct region identified B marks or SC for R 0 5(a) (b) 7 5 isw B for k 5 soi or det = 7 soi (a) 9(b) 9(c) (a = ) 6 (b = ) 6 x + 5 Correct pie chart e.g. Correct ruled bisector with two pairs of arcs Correct arc centre E radius cm inside pentagon Correct region shaded B for a = 66 or M for b = 6 or x + bx + bx + b or better or b = a 4 M for 7 9 M for gradient of perpendicular = their t 0.5 M for (, ) ) correctly substituted into their y = x + c 4 B for correct chart no labels or for correct sectors with or without labels or B for correct c angless seen (7, 5 and 54 ) or correct percentages p (47.5%, 7.5% and 5%) or M for method e.g , or 0 00 or one correct c sectorr on the pie chart B for correct ruled bisector with no/ /wrong arcs Dependent on o at least B in part (a) and mark in part (b) and a closed region UCLES Page 4 of 5

5 Question Answer Marks Partial Marks 0 + xx final answer 4 M for correctly clearing the denominator and expanding bracket M for correctly collecting terms in m on one side and terms not in m on the other M for correct factorising M for correct division dependent on m appearing only once in a factorised expression 0. or 0.0 to M for 0 0 sin60 π 60 or M for k 0 π 60 and M for 0 0 sin c 5. or M for tan = or M for or M for or B for identifying correct angle (a) 7 or 7 B for identifying and 7 as the only prime factors (b) 68 B for 68k or 7 or for listing multiples of each up to 68 4(a) 5 4(b) B for 6 or 8 4(c) 5 B for 75 5(a)(i) 5x + final answer 5(a)(ii) x 5 final answer M for correct first step y e.g. y = 5x, x = 5y +, = x (b) 5 M for a ( ) + = UCLES Page 5 of 5