Cambridge IGCSE Mathematics (9-1) 0980 — 2022 Oct/Nov Paper 1 · Variant 1

This document has 12 pages. Any blank pages are indicated. [Turn over Cambridge IGCSE™(9–1) DC (DE) 320233 © UCLES 2022 MATHEMATICS 0980/11 Paper 1 (Core) October/November 2022 1 hour You must answer on the question paper. You will need: Geometrical instruments INSTRUCTIONS ● Answer all questions. ● Use a black or dark blue pen. You may use an HB pencil for any diagrams or graphs. ● Write your name, centre number and candidate number in the boxes at the top of the page. ● Write your answer to each question in the space provided. ● Do not use an erasable pen or correction fluid. ● Do not write on any bar codes. ● You should use a calculator where appropriate. ● You may use tracing paper. ● You must show all necessary working clearly. ● Give non-exact numerical answers correct to 3 significant figures, or 1 decimal place for angles in degrees, unless a different level of accuracy is specified in the question. ● For r, use either your calculator value or 3.142. INFORMATION ● The total mark for this paper is 56. ● The number of marks for each question or part question is shown in brackets [ ]. * 0 3 4 3 1 1 0 0 3 0 *

2 0980/11/O/N/22 © UCLES 2022 1 Write the number two million eight hundred and forty thousand three hundred and twenty-seven in figures. … [1] 2 Write down the mathematical name of this type of angle. … [1] 3 (a) Measure the length of this line in millimetres. … mm [1] (b) Draw a line perpendicular to this line. [1]

3 0980/11/O/N/22 © UCLES 2022 [Turn over 4 In triangle PQR, PR 5 = cm and QR 4 = cm. Using a ruler and compasses only, construct triangle PQR. Leave in your construction arcs. The side PQ has been drawn for you. P Q [2] 5 Write down a common multiple of 18 and 24. … [1] 6 Write 32 cm as a fraction of 2 m. Give your answer in its simplest form. … [2] 7 The temperature, in °C, is recorded at the same time in six cities. London Helsinki Oslo Paris Madrid Berlin 6 –2 –5 7 9 2 (a) Which city has the coldest temperature? … [1] (b) What is the difference in temperature between Helsinki and Paris? … °C [1]

4 0980/11/O/N/22 © UCLES 2022 8 x° 71° 55° NOT TO SCALE The diagram shows two straight lines intersecting two parallel lines. Find the value of x. x = … [2] 9 Divide $200 in the ratio 7 : 3. $ … , $ … [2] 10 The birth weights, in kg, of 11 babies are recorded. 2.1 1.6 2.7 4.2 4.0 2.2 3.1 1.7 2.6 3.3 3.7 (a) Complete the stem-and-leaf diagram to show this information. 1 2 3 4 Key: . 2 2 1 1 represents kg [2] (b) Find the median. … kg [1]

5 0980/11/O/N/22 © UCLES 2022 [Turn over 11 Victoria records the colour of each of 240 cars leaving a car park. Some of this information is shown in the pie chart. Blue Green 27° (a) Show that 60 cars are blue. [1] (b) The rest of the cars are either red or white. 110 cars are red. Complete the pie chart to show this information. [2]

6 0980/11/O/N/22 © UCLES 2022 12 The price of a computer is $520. This price is reduced by 15% in a sale. Work out the sale price. $ … [2] 13 Without using a calculator, work out 3 1 6 5 + . You must show all your working and give your answer as a mixed number in its simplest form. … [2] 14 Mario tests new cars. The probability that a car is faulty is 0.04 . (a) Find the probability that a car is not faulty. … [1] (b) In one week Mario tests 850 cars. Find the number of cars that are expected to be faulty. … [2]

7 0980/11/O/N/22 © UCLES 2022 [Turn over 15 A café sells 330 sandwiches. This is 14 11 of the sandwiches they make. Work out the number of sandwiches the café makes. … [2] 16 (a) Complete the table of values for y x 5 = . x –5 –4 –2.5 –2 –1 1 2 2.5 4 5 y –1 –2 –2.5 –5 5 2.5 2 1 [2] (b) On the grid, draw the graph of y x 5 = for x 5 1 G G - - and x 1 5 G G . x y 4 2 3 5 1 0 – 4 – 5 – 3 – 1 – 2 – 2 2 1 3 5 4 – 4 – 5 – 3 – 1 [4]

8 0980/11/O/N/22 © UCLES 2022 17 (a) 3, 9, 27, 81, … Write down the term to term rule for this sequence. … [1] (b) 13, 17, 21, 25, … Find the nth term of this sequence. … [2] 18 P g Q a b c d e f The Venn diagram shows the elements of the sets , P and Q. Complete the statements. (a) P = { … } [1] (b) ( ) P Q n , = … [1] 19 The bearing of A from B is 137°. Find the bearing of B from A. … [2]

9 0980/11/O/N/22 © UCLES 2022 [Turn over 20 (a) Write 0.00273 in standard form. … [1] (b) Sam has to answer this question. Calculate 9306 4532 # . Give your answer in standard form correct to 3 significant figures. Sam writes . 42 1 106 # as his answer to this question. What two errors has Sam made? Error 1 … Error 2 … [2] 21 A C B E F D 51 cm 6 cm 4 cm NOT TO SCALE Triangle ABC is mathematically similar to triangle DEF. Find BC. BC = … cm [2]

10 0980/11/O/N/22 © UCLES 2022 22 NOT TO SCALE 48° x cm 17.5 cm The diagram shows a right-angled triangle. Show that the value of x is 15.8, correct to 3 significant figures. [3] 23 Natalie buys 4 tomato plants and 3 pepper plants for $9.35 . Samir buys 2 tomato plants and 11 pepper plants for $16.55 . Write down a pair of simultaneous equations and solve them to find the cost of one tomato plant and the cost of one pepper plant. You must show all your working. Tomato plant $ … Pepper plant $ … [5]

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12 0980/11/O/N/22 © UCLES 2022 Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the publisher will be pleased to make amends at the earliest possible opportunity. To avoid the issue of disclosure of answer-related information to candidates, all copyright acknowledgements are reproduced online in the Cambridge Assessment International Education Copyright Acknowledgements Booklet. This is produced for each series of examinations and is freely available to download at www.cambridgeinternational.org after the live examination series. Cambridge Assessment International Education is part of Cambridge Assessment. Cambridge Assessment is the brand name of the University of Cambridge Local Examinations Syndicate (UCLES), which is a department of the University of Cambridge. BLANK PAGE

This document consists of 6 printed pages. © UCLES 2022 [Turn over Cambridge IGCSE™ (9–1) MATHEMATICS 0980/11 Paper 1 (Core) October/November 2022 MARK SCHEME Maximum Mark: 56 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 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 into discussions about these mark schemes. Cambridge International is publishing the mark schemes for the October/November 2022 series for most Cambridge IGCSE™, Cambridge International A and AS Level components and some Cambridge O Level components.

0980/11 Cambridge IGCSE (9–1) – Mark Scheme PUBLISHED October/November 2022 © UCLES 2022 Page 2 of 6 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 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.

0980/11 Cambridge IGCSE (9–1) – Mark Scheme PUBLISHED October/November 2022 © UCLES 2022 Page 3 of 6 Maths-Specific Marking Principles 1 Unless 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. 2 Unless specified in the question, answers may be given as fractions, decimals or in standard form. Ignore superfluous zeros, provided that the degree of accuracy is not affected. 3 Allow alternative conventions for notation if used consistently throughout the paper, e.g. commas being used as decimal points. 4 Unless otherwise indicated, marks once gained cannot subsequently be lost, e.g. wrong working following a correct form of answer is ignored (isw). 5 Where a candidate has misread a number 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 mark for the misread. 6 Recovery within working is allowed, e.g. a notation error in the working where the following line of working makes the candidate’s intent clear.

0980/11 Cambridge IGCSE (9–1) – Mark Scheme PUBLISHED October/November 2022 © UCLES 2022 Page 4 of 6 Abbreviations cao – correct answer only dep – dependent FT – follow through after error isw – ignore subsequent working oe – or equivalent SC – Special Case nfww – not from wrong working soi – seen or implied Question Answer Marks Partial Marks 1 2 840 327 1 2 Obtuse 1 3(a) 77 1 3(b) Ruled perpendicular line meeting the given line 1 4 Correct triangle with correct arcs 2 B1 for correct triangle with no arcs or incorrect arcs or two correct arcs If 0 scored, SC1 for correct triangle and correct arcs but lines interchanged 5 Any multiple of 72 1 6 4 25 cao 2 M1 for 32 200 oe 7(a) Oslo 1 7(b) 9 1 8 54 2 M1 for 180 – 71 – 55 oe or B1 for 55 or 125 in a relevant correct position on the diagram 9 140, 60 2 M1 for ( ) 200 7 3 +  k where k = 1, 7 or 3 10(a) 6 7 1 2 6 7 1 3 7 0 2 2 B1 for 2 rows correctly ordered or fully correct unordered 10(b) 2.7 cao 1 11(a) 90 360 × 240 oe 1

0980/11 Cambridge IGCSE (9–1) – Mark Scheme PUBLISHED October/November 2022 © UCLES 2022 Page 5 of 6 Question Answer Marks Partial Marks 11(b) Ruled line giving sector as 165° 2 M1 for 110 360 240  or 90 110 60  oe 12 442 2 M1 for 100 15 520 100 −  oe or B1 for 78 13 2 5 6 6 + oe M1 i.e. correct fractions with common denominator 6k 1 16 cao A1 14(a) 0.96 or 96% or 24 25 final answer 1 14(b) 34 cao 2 M1 for 0.04 × 850 oe 15 420 2 M1 for 14 11 330  oe 16(a) –1.25, 1.25 oe 2 B1 for each 16(b) Correct curve 4 B3FT for 9 or 10 correctly plotted points B2FT for 7 or 8 correctly plotted points B1FT for 5 or 6 correctly plotted points 17(a) × 3 1 17(b) 4n + 9 oe final answer 2 B1 for 4n + k or jn + 9, j ≠ 0, or correct answer seen then spoilt 18(a) a, b, c, d 1 18(b) 6 1 19 317 2 M1 for 137 + 180 oe 20(a) 2.73 × 10–3 cao 1 20(b) 42.1 is incorrectly rounded [to 3 significant figures] oe 42.1 × 106 is not correct standard form oe 2 B1 for each If B0 scored, SC1 for 4.22×107 seen 21 34 2 M1 for 51 4 6 = BC oe or better

0980/11 Cambridge IGCSE (9–1) – Mark Scheme PUBLISHED October/November 2022 © UCLES 2022 Page 6 of 6 Question Answer Marks Partial Marks 22 [x =] 17.5 tan48 or [ x =] tan 42×17.5 M2 M1 for tan 48 = 17.5 x or tan (90 – 48) = 17.5 x 15.75.. or 15.76 A1 23 4t +3p = 9.35 oe 2t + 11p = 16.55 oe B2 B1 for each Correctly eliminating one variable M1 Follow through their equations [t = ] 1.4[0] A1 [p = ] 1.25 A1 If M0 or M0 FT scored, SC1 for 2 values which satisfy one correct equation or one of their equations