This document consists of 7printed pages.© Cambridge University Press & Assessment2024[Turn overCambridge IGCSE™MATHEMATICS0580/21Paper 2 (Extended)October/November2024MARK SCHEMEMaximum Mark: 70PublishedThis 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 does 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 intodiscussions about these mark schemes.Cambridge International is publishing the mark schemes for the October/November2024series for most CambridgeIGCSE, Cambridge International A and AS Levelcomponents, and some Cambridge O Level components.
0580/21Cambridge IGCSE–Mark SchemePUBLISHEDOctober/November2024© Cambridge University Press & Assessment2024Page 2of 7Generic Marking PrinciplesThese 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 descriptions for a question. Each question paper and mark scheme will also comply with these marking principles.GENERIC MARKING PRINCIPLE 1: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 2:Marks awarded are always whole marks(not half marks, or other fractions).GENERIC MARKING PRINCIPLE 3: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.
0580/21Cambridge IGCSE–Mark SchemePUBLISHEDOctober/November2024© Cambridge University Press & Assessment2024Page 3of 7Mathematics-Specific Marking Principles1Unless a particular method has been specified in the question, full marks may be awarded for any correct method. However, if a calculation is required then no marks will be awarded for a scale drawing.2Unless specified in the question, non-integer answers may be given as fractions, decimals or in standard form. Ignoresuperfluous zeros, provided that the degree of accuracy is not affected.3Allow alternative conventions for notation if used consistently throughout the paper, e.g. commas being used as decimal points.4Unless otherwise indicated, marks once gained cannot subsequently be lost, e.g. wrong working following a correct form of answer is ignored (isw).5Where a candidate has misread a number or sign in the question and used that value consistently throughout, provided that number does not alter the difficulty or the method required, award all marks earned and deduct just 1 A or B mark for the misread.6Recovery within working is allowed, e.g. a notation error in the working where the following line of working makes the candidate’s intent clear.Abbreviationscao–correct answer onlydep–dependentFT–follow through after errorisw–ignore subsequent workingoe–or equivalentSC–Special Casenfww–not from wrong workingsoi–seen or implied
0580/21Cambridge IGCSE–Mark SchemePUBLISHEDOctober/November2024© Cambridge University Press & Assessment2024Page 4of 7QuestionAnswerMarksPartial Marks122 32 or 10 32 pm1245or 0.813< ==2B1for two correct43.22M1for 5.634+kwhere k= 1, 3 or 45(a)1812−15(b)34−16(a)5816(b)3916(c)251177(4x–5) final answer182342M1for 3000 2.6 31009153B2 for [x=]24ORM1for x+ x+ 132 = 180 oe soiM1 for 360their xoe provided this gives an integer answer10(a)0.24 oe2M1 for 1 –0.28 oe 10(b)421
0580/21Cambridge IGCSE–Mark SchemePUBLISHEDOctober/November2024© Cambridge University Press & Assessment2024Page 5of 7QuestionAnswerMarksPartial Marks11163or25714237−B1Correct step for dealing with mixed numbers Allow 163kkor 257kk11221and75217221and 1221M1Correct method to find common denominator e.g. 5721and3122116121caoA112Correctly eliminating one variableM1x = –3A1IfA0 scored SC1for 2 values satisfying one of the original equations.y=4A113(a)11113(b)4n–10 oe final answerand 2n3+ 1 oe final answer4B2 for 4n–10 oefinal answer or B1for 4n+jor kn− 10 (k≠ 0)or4n–10seen then spoiltB2 for 2n3+ 1 oe final answerorB1 for any cubic expression innor 3rd difference = 12 or for correct answer seen then spoilt14160 4M3for 33250012815=Voeor for answer figs 16 from258figs× 331215orB2 for1.28 [kg]OR M1 for 2500 ÷ 8 oe or 312.5 seenM1for 31215or 31512oe15(a)Correct box-and-whisker plotL= 15LQ= 38Median = 53UQ = 66H = 963B1 for UQ = 66 or Lowest = 15 soiM1 for at least 3 values correct within box and whisker plot
