Mathematics Stage 9 Paper 1 2022 1 hour Additional materials: Geometrical instruments Tracing paper (optional) INSTRUCTIONS • Answer all questions. • Write your answer to each question in the space provided. • You should show all your working on the question paper. • You are not allowed to use a calculator. INFORMATION • The total mark for this paper is 50. • The number of marks for each question or part question is shown in brackets [ ]. 3143_01_6RP © UCLES 2022 2 1 A prism is made from four identical cubes. Tick () to show the number of planes of symmetry the prism has. 1 2 3 4 [1] 2 A bag contains pencils of four different colours. Here are some of the probabilities of picking a pencil of each colour. Probability Red Yellow Blue 0.35 0.25 0.1 Green (a) Find the probability of picking a pencil that is red or yellow. [1] (b) Complete the table. [1] 3 Solve. 12 =3 x x= © UCLES 2022 M/S9/01 [1] 3 4 Use a straight edge and compasses only to construct an equilateral triangle ABC. The side AB has been drawn for you. Do not rub out your construction arcs. A B [1] 5 Here are some pairs of events. Tick () to show if each pair of events is independent or not independent. Independent Pick a disk from a box at random and replace it. Pick another disk from the same box at random. Pick a disk from a box at random and do not replace it. Pick another disk from the same box at random. Pick a disk from a box at random and do not replace it. Roll a dice. Not independent [1] © UCLES 2022 M/S9/01 [Turn over 4 6 The diagram shows triangle ABC drawn on a grid. y 7 6 5 4 C 3 2 1 –5 – 4 –3 –2 –1 0 A –1 –2 –3 1 2 3 4 B 5 6 x The triangle ABC is enlarged by a scale factor of 2 from centre of enlargement (0, 0). Find the coordinates of the new position of vertex C. ( 7 , ) [1] A circle has a radius of 3 cm. Tick () to show the area of the circle correct to the nearest cm2. 6 9 18 28 81 [1] © UCLES 2022 M/S9/01 5 8 Find the value of 4 − 3x + 8 when x = 2 x [1] 9 A rectangle has an area of 8 cm2. The sides of the rectangle are enlarged by a scale factor of 3 Find the area of the enlarged rectangle. cm2 [1] 10 Work out. 3 5 1 − ÷ 1 − 5 9 Give your answer as a fraction in its simplest form. [2] © UCLES 2022 M/S9/01 [Turn over 6 11 The distance–time graph represents Jamila’s journey from home. 100 75 Distance from home 50 (km) 25 0 12 noon 1 pm 2 pm 3 pm 4 pm 5 pm Time Stage 1. She travels at a constant speed of 50 km/h for 1 hour. Stage 2. She stops for 1 hour. (a) Describe fully the next two stages of Jamila’s journey. Stage 3 Stage 4 [2] (b) At 3 pm Jamila travels home at a constant speed of 50 km/h without stopping. Complete the graph to show Jamila’s journey home. © UCLES 2022 M/S9/01 [1] 7 12 Here are some shapes on a grid. A X B C D E F Write the letter A to F for each of the shapes in the correct part of the Carroll diagram. Shape A has been done for you. Congruent to shape X Similar to shape X Not congruent to shape X A Not similar to shape X [2] © UCLES 2022 M/S9/01 [Turn over 8 13 Write a number in the box to make the statement correct. 71 = .426… [1] 14 (a) A scientist writes the number 760 000 000 in standard form. Draw a ring around the correct answer. 7.6 × 107 76 × 107 7.6 × 108 7.6 × 109 [1] (b) The scientist measures the width of a human hair as 0.000 046 m. Write this number in standard form. m [1] 15 Mike runs 4.5 laps of a field. He runs a total distance of 3.78 km. Find the distance of each lap. km [1] © UCLES 2022 M/S9/01 9 16 Carlos says, All fractions with an odd denominator are equivalent to recurring decimals, for example, 13 0.3 Find an example to show that Carlos is wrong. [1] 17 The function y = ( x − 3)2 can be represented by this function machine. Input (x) → –3 → Square → Output (y) (a) Find the output if the input is −1 [1] (b) Find the two inputs that give an output of 9 [2] © UCLES 2022 M/S9/01 [Turn over 10 18 (a) Solve. 2x − 9 < 6x + 3 [2] (b) Show your solution on the number line. –6 –5 –4 –3 –2 –1 0 1 2 3 4 5 6 x [1] 19 Work out. 4 2 2 1 −2 + 5 3 3 Give your answer as a mixed number in its simplest form. [3] © UCLES 2022 M/S9/01 11 20 The table shows information about the wingspans of 50 butterflies. Wingspan (𝒙 cm) Frequency 4.0 ≤ x < 4.4 5 4.4 ≤ x < 4.8 12 4.8 ≤ x < 5.2 23 5.2 ≤ x < 5.6 8 5.6 ≤ x < 6.0 2 Draw a frequency polygon to show this information. 25 20 15 Frequency 10 5 0 4.0 4.4 4.8 5.2 Wingspan (cm) 5.6 6.0 [3] © UCLES 2022 M/S9/01 [Turn over 12 21 Shape A and shape B are drawn on the grid. y 7 6 5 4 3 A 2 1 – 4 –3 –2 –1 0 –1 1 2 3 4 5 6 7 8 x –2 B –3 –4 –5 Shape A is mapped onto shape B by a combination of two transformations. The first transformation is a reflection in the line y = x Describe fully the second transformation. [2] © UCLES 2022 M/S9/01 13 22 The diagram shows a triangle ABC. DE is parallel to AC. B x NOT TO SCALE E D 115° 60° A C Calculate the size of the angle marked 𝑥 . ° [2] 23 The line segment joining (a, b) to (c, d) has a midpoint of (3.5, –2). Suggest possible coordinates for (a, b) and (c, d). (a, b) = ( , ) (c, d) = ( , ) [2] © UCLES 2022 M/S9/01 [Turn over 14 24 Simplify. 4 p − 12 pq 4p [1] 25 The nth term of sequence S is 2n + 5 The nth term of sequence T is 3n – 6 (a) Show that 91 is a term in sequence S. [1] (b) Show that 91 is not a term in sequence T. [1] (c) Find the value of the term that is in both sequences and is in the same position in each sequence. [2] © UCLES 2022 M/S9/01 15 26 Mia asks the boys and girls in her class how many siblings (brothers and sisters) they each have. She draws this chart of her results. Number of children boys girls 0 0 1 2 3 Number of siblings 4 or more Tick () to show if the boys or the girls generally have more siblings. Boys Girls Explain how you know. Tick () to show if the range of the number of siblings is bigger for the boys or the girls. Boys Girls Explain how you know. [2] © UCLES 2022 M/S9/01 [Turn over 16 27 Solve the simultaneous equations. 4 x + 5 y = 17 2 x + 4 y = 13 x= y= [3] 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 annually and is available to download at https://lowersecondary.cambridgeinternational.org/ 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. © UCLES 2022 M/S9/01 Mathematics Stage 9 Paper 1 Cambridge Lower Secondary Progression Test Mark Scheme 3143_01_MS_6RP © UCLES 2022 2022 S9/01 Mathematics Stage 9 Paper 1 Mark Scheme 2022 General guidance on marking Difference in printing It is suggested that schools check their printed copies for differences in printing that may affect the answers to the questions, for example in measurement questions. Brackets in mark scheme When brackets appear in the mark scheme this indicates extra information that is not required but may be given. For example: Question Answer Mark 5 19.7 or 19.6(58…) 1 Part marks Guidance This means that 19.6 is an acceptable truncated answer even though it is not the correct rounded answer. The … means you can ignore any numbers that follow this; you do not need to check them. Accept • any correct rounding of the numbers in the brackets, e.g. 19.66 • truncations beyond the brackets, e.g. 19.65 Do not accept • 19.68 (since the numbers in brackets do not have to be present but if they are they should be correct). © UCLES 2022 Page 2 of 12 S9/01 Mathematics Stage 9 Paper 1 Mark Scheme 2022 These tables give general guidelines on marking learner responses that are not specifically mentioned in the mark scheme. Any guidance specifically given in the mark scheme supersedes this guidance. Number and place value The table shows various general rules in terms of acceptable decimal answers. Accept Accept omission of leading zero if answer is clearly shown, e.g. .675 Accept trailing zeros, unless the question has asked for a specific number of decimal places or significant figures, e.g. 0.7000 Accept a comma as a decimal point if that is the convention that you have taught the learners, e.g. 0,638 Units For questions involving quantities, e.g. length, mass, money, duration or time, correct units must be given in the answer. Units are provided on the answer line unless finding the units is part of what is being assessed. The table shows acceptable and unacceptable versions of the answer 1.85 m. Accept Do not accept If the unit is given on the answer line, e.g. ............................ m Correct conversions, provided the unit is stated unambiguously, e.g. ......185 cm...... m (this is unambiguous since the unit cm comes straight after the answer, voiding the m which is now not next to the answer) ......185...... m ......1850...... m etc. If the question states the unit that the answer should be given in, e.g. ‘Give your answer in metres’ 1.85 1 m 85 cm 185; 1850 Any conversions to other units, e.g. 185 cm © UCLES 2022 Page 3 of 12 S9/01 Mathematics Stage 9 Paper 1 Mark Scheme 2022 Money In addition to the rules for units, the table below gives guidance for answers involving money. The table shows acceptable and unacceptable versions of the answer $0.30 If the amount is in dollars and cents, the answer should be given to two decimal places If units are not given on the answer line If $ is shown on the answer line If cents is shown on the answer line Accept Do not accept $0.30 $0.3 For an integer number of dollars it is acceptable not to give any decimal places, e.g. $9 or $9.00 $09 or $09.00 Any unambiguous indication of the correct amount, e.g. 30 cents; 30 c $0.30; $0–30; $0=30; $00:30 30 or 0.30 without a unit All unambiguous indications, e.g. $......0.30......; $......0-30......; $......0=30......; $......00:30...... $......30...... ......30......cents ......0.30......cents $30; 0.30 cents Ambiguous answers, e.g. $30 cents; $0.30 c; $0.30 cents (as you do not know which unit applies because there are units either side of the number) Ambiguous answers, e.g. $......30 cents......; $......0.30 cents...... unless units on the answer line have been deleted, e.g. $......30 cents...... Ambiguous answers, e.g. ......$30 ......cents; ......$0.30 ......cents unless units on the answer line have been deleted, e.g. ......$0.30......cents © UCLES 2022 Page 4 of 12 S9/01 Mathematics Stage 9 Paper 1 Mark Scheme 2022 Duration In addition to the rules for units, the table below gives guidance for answers involving time durations. The table shows acceptable and unacceptable versions of the answer 2 hours and 30 minutes. Accept Do not accept Any unambiguous indication using any reasonable abbreviations of hours (h, hr, hrs), minutes (m, min, mins) and seconds (s, sec, secs), e.g. 2 hours 30 minutes; 2 h 30 m; 02 h 30 m Incorrect or ambiguous formats, e.g. 2.30; 2.3; 2.30 hours; 2.30 min; 2 h 3; 2.3 h (this is because this indicates 0.3 of an hour (i.e.18 minutes) rather than 30 minutes) Any correct conversion with appropriate units, e.g. 2.5 hours; 150 mins unless the question specifically asks for time given in hours and minutes 02:30 (as this is a 24-hour clock time, not a time interval) 2.5; 150 Time The table below gives guidance for answers involving time. The table shows acceptable and unacceptable versions of the answer 07:30 Accept Do not accept If the answer is required in 24-hour format Any unambiguous indication of correct answer in numbers, words or a combination of the two, e.g. 07:30 with any separator in place of the colon, e.g. 07 30; 07,30; 07-30; 0730 7:30 7:30 am 7 h 30 m 7:3 730 7.30 pm 073 07.3 If the answer is required in 12-hour format Any unambiguous indication of correct answer in numbers, words or a combination of the two, e.g. 7:30 am with any separator in place of the colon, e.g. 7 30 am; 7.30 am; 7-30 am Absence of am or pm 1930 am 7 h 30 m 7:3 730 7.30 pm 7.30 in the morning Half past seven (o’clock) in the morning Accept am or a.m. © UCLES 2022 Page 5 of 12 S9/01 Mathematics Stage 9 Paper 1 Mark Scheme 2022 Algebra The table shows acceptable and unacceptable versions of the answer 3x – 2 Accept Do not accept x3 – 2; 3 × x – 2 3x + –2 if it is supposed to be in simplest form Case change in letters Changes in letters as long as there is no ambiguity Accept extra brackets when factorising, e.g. 5(x + (3 + y)) Teachers must mark the final answer given. If a correct answer is seen in working but final answer is given incorrectly then the final answer must be marked. If no answer is given on the answer line then the final line of the working can be taken to be the final answer. Inequalities The table shows acceptable and unacceptable versions of various answers. For the following Accept Do not accept For 6 ≤ x < 8 [6, 8) <x< For x ≤ –2 (–∞,–2] x < –2 For x > 3 (3, ∞) 3<x Just ‘3’ written on the answer line, even if x > 3 appears in the working Plotting points The table shows acceptable and unacceptable ways to plot points. Accept Crosses or dots plotted within ± Do not accept 1 square of the 2 correct answer A horizontal line and vertical line from the axes meeting at the required point The graph line passing through a point implies the point even though there is no cross © UCLES 2022 Page 6 of 12 S9/01 Mathematics Stage 9 Paper 1 Mark Scheme Question Answer 1 1 2 3 Marks 4 Part Marks 2022 Guidance 1 Accept any clear indication. 2(a) 0.6 1 Accept equivalent fractions or 6 or 60% percentage, e.g. 10 2(b) 0.3 1 Accept if not inserted in table, but clearly the final answer. Accept equivalent fractions or 3 percentage, e.g or 30% 10 3 ( x =) 4 1 4 Correct equilateral triangle with correct construction arcs left visible. 1 Label C not required. Tolerance ± 2 mm 1 Accept any clear indication. 5 Independent Not independent All three answers correct for the mark. 6 (4, 6) 7 6 © UCLES 2022 1 9 18 28 81 1 Page 7 of 12 Accept any clear indication. S9/01 Mathematics Stage 9 Paper 1 Mark Scheme Question Answer Marks Part Marks 8 7 1 9 72 (cm2) 1 10 2 9 2022 10 Award 1 mark for 2 5 × 9 4 Guidance or 18 45 ÷ 20 45 1 mark implied by any equivalent 9 18 e.g. fraction to 10 20 11(a) (Stage 3) She travels at (a constant speed 1 of) 50 km/h for an hour. 2 (Stage 4) She travels at (a constant speed 1 an hour. of) 25 km/h for 2 2 Award 1 mark for one stage correctly described or for two correct speeds with times missing/wrong. Accept equivalent times, e.g. 30 minutes. 11(b) A straight line from (3 pm, 87.5) to (4.45 pm, 0). 1 Accept values closer to 4.45 pm than 4.30 pm or 5 pm. 12 Five letters (B to F) correctly placed in the Carroll diagram. 2 Award 1 mark for three or four letters (B to F) correctly placed in the Carroll diagram. Similar to shape X Not similar to shape X 13 © UCLES 2022 8 Congruent to shape X Not congruent to shape X (A) D B F C E 1 Page 8 of 12 S9/01 Mathematics Stage 9 Paper 1 Mark Scheme Question Answer Marks Part Marks 14(a) 7.6 × 107 14(b) 4.6 × 10− 5 (m) 1 15 0.84 (km) 1 16 Any correct example of a fraction with an odd denominator showing it is not a 1 recurring decimal, e.g. = 0.2 5 1 17(a) 16 1 17(b) 0 and 6 2 Award 1 mark for one correct value. 18(a) x > −3 2 Award 1 mark for gathering the terms in x on one side and constant terms on the other side, e.g. 2 x − 6 x < 3 − − 9 (ignore inequality for this mark, may replace with =) 76 × 107 7.6 × 108 7.6 × 109 Must show fraction and correct decimal equivalent for the mark. Award 1 mark for x > −3 in the working with just −3 on the answer line or for x = −3 on the answer line. © UCLES 2022 – 6 –5 – 4 –3 –2 –1 0 1 2 3 4 5 6 x Guidance Accept any clear indication. 1 or 18(b) 2022 1 Follow through their inequality from part (a). Page 9 of 12 Accept 0 and 6 in either order for 2 marks. S9/01 Mathematics Stage 9 Paper 1 Mark Scheme Question 19 Answer 2 1 15 Marks Part Marks 3 correct answer only 2022 Award 2 marks for 31 15 Guidance or equivalent fraction. or Award 1 mark for 22 or 8 5 3 2 1 or 2 + − or 4 − 2 5 3 5 3 6 10 5 or 4 −2 + 15 15 15 2 20 Straight lines joining (4.2, 5) and (4.6, 12) and (5.0, 23) and (5.4, 8) and (5.8, 2). 25 3 Award 1 mark for four or five plots correct horizontally (x = 4.2, 4.6, 5.0, 5.4, 5.8). and 20 Award 1 mark for four or five plots correct vertically (frequency = 5, 12, 23, 8, 2). 15 Frequency 10 5 0 4.0 © UCLES 2022 1 4.4 4.8 5.2 5.6 Wingspan (cm) 6.0 Page 10 of 12 Mark intention. S9/01 Mathematics Stage 9 Paper 1 Mark Scheme Question 21 Answer − 4 −9 Translation of Marks 2022 Part Marks 2 Award 1 mark for the word translation − 4 or for −9 Guidance − 4 expressed in −9 Do not accept words. or for a correct reflection of A in y = x drawn on the grid. 22 55 (°) 2 Award 1 mark for 60 (°) correctly marked at BED or 65 (°) correctly marked at BDE or 65 (°) correctly marked at BAC. 23 Any pair of coordinates (a, b), (c, d) where a+c b+d = 3.5 and = −2 2 2 but not (3.5, –2) and (3.5, –2) as this is not a line segment. 2 Award 1 mark for any pair of coordinates (a, b), (c, d) where a+c b+d = 3.5 or = −2 2 2 24 1 − 3q correct answer only 1 25(a) 2n + 5 = 91 2n = 86 n = 43 or 86 is even/a multiple of 2 1 3n – 6 = 91 3n = 97 n = 32.3 … or equivalent or 97 is not a multiple of 3 1 27 2 Award 1 mark for 2n + 5 = 3n − 6 implied by n = 11 25(b) 25(c) © UCLES 2022 Accept a and c as 3.5 or b and d as –2, but not both, for 1 or 2 marks, as appropriate. 0 marks for (3.5, –2) and (3.5, –2). Full working required for the mark. Accept sequence extended up to 91 Full working required for the mark. Accept sequence extended up to 93 Page 11 of 12 S9/01 Mathematics Stage 9 Paper 1 Mark Scheme Question 26 Answer Boys ticked and more boys have (2 or 3 or) 4 or more siblings or equivalent and Boys ticked and the range for boys is 4 or more and/or the range for girls is 3 27 ( x =) 0.5 and ( y =) 3 Marks Part Marks 2 Award 1 mark for Boys ticked and more boys have (2 or 3 or) 4 or more siblings or equivalent or Boys ticked and the range for boys is 4 or more and/or the range for girls is 3 3 Award 2 marks for x = 0.5 or y = 3 or Award 1 mark for a correct method for eliminating either x or y, e.g. • Re-arranging one of the equations to make one variable the subject and then substitute their arrangement into the other equation. • Making the coefficients of x or y equal with no more than one arithmetic error or sign error, followed by an appropriate, consistent subtraction or addition across all three terms. • Correct substitution and evaluation from incorrect first value, i.e. two values satisfying one of the original equations. © UCLES 2022 2022 Page 12 of 12 Guidance Or equivalent for first explanation, e.g. • Fewer girls have (2 or 3 or) 4 or more siblings. • No girls have 4 or more siblings. • More girls have 0 or 1 sibling. • Fewer boys have 0 or 1 sibling. For first explanation, accept reference to taller bars, e.g. the bar for boys is taller than for girls for (2 or 3 or) 4 or more siblings. Accept x = 1 2 Mathematics Stage 9 Paper 2 2022 1 hour Additional materials: Calculator Geometrical instruments Tracing paper (optional) INSTRUCTIONS • Answer all questions. • Write your answer to each question in the space provided. • You should show all your working on the question paper. • You may use a calculator. INFORMATION • The total mark for this paper is 50. • The number of marks for each question or part question is shown in brackets [ ]. 3143_02_5RP © UCLES 2022 2 1 A plant is 6.2 cm tall. The height of the plant increases by 11% each week. Find how tall the plant will be after two weeks. cm [2] 2 Pierre says, I think of a number n I multiply by 4 Then I square. Then I add 6 Write down an algebraic expression for Pierre’s rule. [1] 3 Draw a ring around each of the rational numbers. 8100 22 7 7 7 3 8 [1] © UCLES 2022 M/S9/02 3 4 A line is drawn on the grid. y 8 6 4 2 0 2 4 6 8 x Find the equation of the line. [2] 5 Oliver and Mia attempt this question. Round 0.027 648 correct to three significant figures. Oliver says, ‘The answer is 0.028’ Mia says, ‘The answer is 0.0276’ Tick () to show who is correct. Oliver Mia Explain why the other answer is not correct. [1] © UCLES 2022 M/S9/02 [Turn over 4 6 Draw a line to match each scatter graph to the best description. Strong positive correlation Weak positive correlation Weak negative correlation Strong negative correlation [1] 7 Calculate. 0.6 + (1.78 − 0.28) 2 5 [1] © UCLES 2022 M/S9/02 5 8 Safia drives for 4 hours from A to B. Angelique drives at half the speed of Safia. Find how many hours Angelique takes to drive from A to B. hours [1] 9 The table gives information about the masses of 20 watermelons. Mass, m (kg) Frequency, f Midpoint, x f ×x 2≤m<4 2 3 6 4≤m<6 4 5 20 6≤m<8 9 7 63 8 ≤ m < 10 5 Total = 20 Total = (a) Complete the table. [1] (b) Calculate an estimate of the mean mass of these watermelons. kg [1] (c) Explain why your answer to part (b) is an estimate. [1] © UCLES 2022 M/S9/02 [Turn over 6 10 Lily counts the number of people on the 12 buses that arrive at Pugu bus station in one day. 23 29 20 27 44 27 41 28 19 16 17 8 She draws a stem-and-leaf diagram of her results. 0 8 1 6 7 9 2 0 3 7 4 1 8 9 3 4 Key: 1 6 represents 16 buses Lily makes some mistakes on her stem-and-leaf diagram. Redraw the stem-and-leaf diagram correctly below. Key: .................................................. .................................................. [3] © UCLES 2022 M/S9/02 7 11 The exterior angle of a regular polygon is 40°. Draw a ring around the number of sides this polygon has. 7 8 9 10 [1] 12 Some equations of straight lines have been placed in the Venn diagram. y A y 3x 3 y y y x3 3x 2 y B 9x 2 3x 4 y y x2 2x 2 4x 2 y 2x 4 (a) Write down a description of the straight lines in set A. [1] (b) Write down a description of the straight lines in set B. [1] (c) Write the equation y = − 2 x + 3 in the correct part of the Venn diagram. © UCLES 2022 M/S9/02 [1] [Turn over 8 13 The map shows the positions of two lighthouses, A and B. The map is drawn to a scale of 1 : 50 000 North A B Scale 1 : 50 000 The bearing of ship S from lighthouse A is 080°. The distance of ship S from lighthouse B is 1.8 km. Show the two possible positions for ship S on the map. [3] 14 Expand and simplify. ( x + 4)( x − 7) [2] © UCLES 2022 M/S9/02 9 15 Yuri has a box containing white, milk and plain chocolates in the ratio white : milk : plain 12 : 7 : 2 There are more than 50 chocolates in the box. Find the smallest possible number of milk chocolates in the box. [1] 16 Rearrange the formula to make x the subject. y= 9 x+4 5 x= © UCLES 2022 M/S9/02 [2] [Turn over 10 17 (a) Complete the table of values for 3x + 2 y = 4 x –1 0 3 y [2] (b) Draw the graph of 3x + 2 y = 4 for values of x between –1 and 3 y 4 3 2 1 –1 0 1 2 3 x –1 –2 –3 [1] © UCLES 2022 M/S9/02 11 18 A cylinder has a radius of 6 cm and a height of 20 cm. 20 cm NOT TO SCALE 6 cm Find the total surface area of this cylinder. cm2 [3] © UCLES 2022 M/S9/02 [Turn over 12 19 Chen prepares food and drink for his friends. He prepares either samosas or chapattis for the food. The probability that he prepares samosas is 0.4 He prepares either tea or coffee for the drink. He is equally likely to prepare tea or coffee. Food Drink Tea .............. Samosas 0.4 .............. Coffee Tea .............. .............. Chapattis .............. (a) Complete the tree diagram. Coffee [2] (b) Find the probability that he prepares chapattis and tea. [2] © UCLES 2022 M/S9/02 13 20 A cuboid is formed by joining together four identical cubes. NOT TO SCALE The total surface area of this cuboid is 54 cm2. These four cubes are rearranged to form a cuboid with a different total surface area. Find the total surface area of the new cuboid. cm2 [2] 21 Eva thinks of a number. When she rounds the number correct to two significant figures the answer is 43 000 When she rounds the number correct to three significant figures the answer is 43 500 Complete the inequality to show the limits for Eva’s number. ≤ Eva’s number < © UCLES 2022 M/S9/02 [2] [Turn over 14 22 A shape is made from part of a circle, centre C, with a radius of 4.2 cm and a square with sides of 4.2 cm. 4.2 cm C NOT TO SCALE 4.2 cm Find the area of the shape. Give your answer correct to one decimal place. cm2 [4] © UCLES 2022 M/S9/02 15 23 Here is a triangular prism ABCDEF. E B F D 12.1 cm A 13.3 cm NOT TO SCALE 2.3 cm C ABC is a right-angled triangle. BC = 12.1 cm, AC = 13.3 cm and CF = 2.3 cm. Calculate the volume of this triangular prism. cm3 [4] © UCLES 2022 M/S9/02 16 BLANK PAGE 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 annually and is available to download at https://lowersecondary.cambridgeinternational.org/ 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. © UCLES 2022 M/S9/02 Mathematics Stage 9 Paper 2 Cambridge Lower Secondary Progression Test Mark Scheme 3143_02_MS_6RP © UCLES 2022 2022 S9/02 Mathematics Stage 9 Paper 2 Mark Scheme 2022 General guidance on marking Difference in printing It is suggested that schools check their printed copies for differences in printing that may affect the answers to the questions, for example in measurement questions. Brackets in mark scheme When brackets appear in the mark scheme this indicates extra information that is not required but may be given. For example: Question Answer Mark 5 19.7 or 19.6(58…) 1 Part marks Guidance This means that 19.6 is an acceptable truncated answer even though it is not the correct rounded answer. The … means you can ignore any numbers that follow this; you do not need to check them. Accept • any correct rounding of the numbers in the brackets, e.g. 19.66 • truncations beyond the brackets, e.g. 19.65 Do not accept • 19.68 (since the numbers in brackets do not have to be present but if they are they should be correct). © UCLES 2022 Page 2 of 14 S9/02 Mathematics Stage 9 Paper 2 Mark Scheme 2022 These tables give general guidelines on marking learner responses that are not specifically mentioned in the mark scheme. Any guidance specifically given in the mark scheme supersedes this guidance. Number and place value The table shows various general rules in terms of acceptable decimal answers. Accept Accept omission of leading zero if answer is clearly shown, e.g. .675 Accept trailing zeros, unless the question has asked for a specific number of decimal places or significant figures, e.g. 0.7000 Accept a comma as a decimal point if that is the convention that you have taught the learners, e.g. 0,638 Units For questions involving quantities, e.g. length, mass, money, duration or time, correct units must be given in the answer. Units are provided on the answer line unless finding the units is part of what is being assessed. The table shows acceptable and unacceptable versions of the answer 1.85 m. Accept Do not accept If the unit is given on the answer line, e.g. ............................ m Correct conversions, provided the unit is stated unambiguously, e.g. ......185 cm...... m (this is unambiguous since the unit cm comes straight after the answer, voiding the m which is now not next to the answer) ......185...... m ......1850...... m etc. If the question states the unit that the answer should be given in, e.g. ‘Give your answer in metres’ 1.85 1 m 85 cm 185; 1850 Any conversions to other units, e.g. 185 cm © UCLES 2022 Page 3 of 14 S9/02 Mathematics Stage 9 Paper 2 Mark Scheme 2022 Money In addition to the rules for units, the table below gives guidance for answers involving money. The table shows acceptable and unacceptable versions of the answer $0.30 If the amount is in dollars and cents, the answer should be given to two decimal places If units are not given on the answer line If $ is shown on the answer line If cents is shown on the answer line Accept Do not accept $0.30 $0.3 For an integer number of dollars it is acceptable not to give any decimal places, e.g. $9 or $9.00 $09 or $09.00 Any unambiguous indication of the correct amount, e.g. 30 cents; 30 c $0.30; $0–30; $0=30; $00:30 30 or 0.30 without a unit All unambiguous indications, e.g. $......0.30......; $......0-30......; $......0=30......; $......00:30...... $......30...... ......30......cents ......0.30......cents $30; 0.30 cents Ambiguous answers, e.g. $30 cents; $0.30 c; $0.30 cents (as you do not know which unit applies because there are units either side of the number) Ambiguous answers, e.g. $......30 cents......; $......0.30 cents...... unless units on the answer line have been deleted, e.g. $......30 cents...... Ambiguous answers, e.g. ......$30 ......cents; ......$0.30 ......cents unless units on the answer line have been deleted, e.g. ......$0.30......cents © UCLES 2022 Page 4 of 14 S9/02 Mathematics Stage 9 Paper 2 Mark Scheme 2022 Duration In addition to the rules for units, the table below gives guidance for answers involving time durations. The table shows acceptable and unacceptable versions of the answer 2 hours and 30 minutes. Accept Do not accept Any unambiguous indication using any reasonable abbreviations of hours (h, hr, hrs), minutes (m, min, mins) and seconds (s, sec, secs), e.g. 2 hours 30 minutes; 2 h 30 m; 02 h 30 m Incorrect or ambiguous formats, e.g. 2.30; 2.3; 2.30 hours; 2.30 min; 2 h 3; 2.3 h (this is because this indicates 0.3 of an hour (i.e.18 minutes) rather than 30 minutes) Any correct conversion with appropriate units, e.g. 2.5 hours; 150 mins unless the question specifically asks for time given in hours and minutes 02:30 (as this is a 24-hour clock time, not a time interval) 2.5; 150 Time The table below gives guidance for answers involving time. The table shows acceptable and unacceptable versions of the answer 07:30 Accept Do not accept If the answer is required in 24-hour format Any unambiguous indication of correct answer in numbers, words or a combination of the two, e.g. 07:30 with any separator in place of the colon, e.g. 07 30; 07,30; 07-30; 0730 7:30 7:30 am 7 h 30 m 7:3 730 7.30 pm 073 07.3 If the answer is required in 12-hour format Any unambiguous indication of correct answer in numbers, words or a combination of the two, e.g. 7:30 am with any separator in place of the colon, e.g. 7 30 am; 7.30 am; 7-30 am Absence of am or pm 1930 am 7 h 30 m 7:3 730 7.30 pm 7.30 in the morning Half past seven (o’clock) in the morning Accept am or a.m. © UCLES 2022 Page 5 of 14 S9/02 Mathematics Stage 9 Paper 2 Mark Scheme 2022 Algebra The table shows acceptable and unacceptable versions of the answer 3x – 2 Accept Do not accept x3 – 2; 3 × x – 2 3x + –2 if it is supposed to be in simplest form Case change in letters Changes in letters as long as there is no ambiguity Accept extra brackets when factorising, e.g. 5(x + (3 + y)) Teachers must mark the final answer given. If a correct answer is seen in working but final answer is given incorrectly then the final answer must be marked. If no answer is given on the answer line then the final line of the working can be taken to be the final answer. Inequalities The table shows acceptable and unacceptable versions of various answers. For the following Accept Do not accept For 6 ≤ x < 8 [6, 8) <x< For x ≤ –2 (–∞,–2] x < –2 For x > 3 (3, ∞) 3<x Just ‘3’ written on the answer line, even if x > 3 appears in the working Plotting points The table shows acceptable and unacceptable ways to plot points. Accept Crosses or dots plotted within ± Do not accept 1 square of the 2 correct answer A horizontal line and vertical line from the axes meeting at the required point The graph line passing through a point implies the point even though there is no cross © UCLES 2022 Page 6 of 14 S9/02 Mathematics Stage 9 Paper 2 Mark Scheme Question Answer Marks Part Marks 1 7.6(3…) (cm) 2 Award 1 mark for 6.88(2) (cm) or 6.9 (cm) after 1 week or for any fully correct working, e.g. 6.2 × 1.11 × 1.11 (may be seen in stages). 2 (4n)2 + 6 or 16n2 + 6 1 3 4 5 © UCLES 2022 8100 22 7 y = 0.5 x + 3 or y = 7 1 2 7 3 8 x + 3 or equivalent Mia ticked and Gives correct explanation, e.g. (The other answer) is to 2 significant figures. or (The other answer) is to 3 decimal places. or 6 is the 3rd significant figure. or 7 is the 2nd significant figure. or 2 is the 1st significant figure. or The 0 after the decimal point is not a significant figure. 1 2022 Guidance Accept better for 2 marks, e.g. 7.64 Accept any clear indication. All four answers correct for the mark. 2 Award 1 mark for y = mx + 3, m ≠ 0.5 or equivalent or y = 0.5 x + c, c ≠ 3 or equivalent or 0.5 x + 3 or equivalent. 1 Page 7 of 14 Both Mia ticked and any correct explanation needed for the mark. S9/02 Mathematics Stage 9 Paper 2 Mark Scheme Question Answer 6 Marks Strong positive correlation Part Marks 1 Weak positive correlation Weak negative correlation Strong negative correlation 7 0.57 1 8 8 (hours) 1 © UCLES 2022 Page 8 of 14 2022 Guidance All four lines correct for the mark. S9/02 Mathematics Stage 9 Paper 2 Mark Scheme Question Answer Marks Part Marks 2022 Guidance 9(a) (Midpoint, x) 9 and ( f × x) 45 and (Total) 134 1 All three answers correct for the mark. 9(b) 6.7 (kg) 1 Follow through their total f × x correctly divided by 20 9(c) Exact values are not known. or The data is grouped. or Midpoints have been used. 1 Accept any correct explanation. 10 Correct stem-and-leaf diagram drawn. 3 Award 3 marks for correct stem-and-leaf diagram. One error, e.g. Incorrectly ordered leaves in one row. or Not including all five stems. or Not including all 12 leaves. or Incorrect key. 0 8 1 6 7 9 2 0 3 7 1 4 or Award 2 marks for one error. 7 8 9 or 3 4 Award 1 mark for two errors. Key: 1 6 represents 16 people 11 © UCLES 2022 7 8 9 10 1 Page 9 of 14 Accept any clear indication. S9/02 Mathematics Stage 9 Paper 2 Mark Scheme Question Answer Marks Part Marks 12(a) (They all have) gradient of 3 1 12(b) (They all have) intercept on y-axis of – 2 1 12(c) y = − 2 x + 3 placed in ε outside of A or B 1 13 Two correct positions for ship S marked on the map (bearing from A of 080° and distance from B of 3.6 cm). 3 Award 2 marks for one correct position for ship S marked on the map. 2022 Guidance Accept any correct description of intercept on y-axis. Tolerance ± 2 mm and 2°. or North Award 1 mark for a ship S marked on a bearing of 080° or for a ship S marked at a distance of 3.6 cm from B or for a correct calculation of 3.6 cm. A B 14 x2 − 3 x − 28 2 Award 1 mark for three correct terms 2 from x − 7 x + 4 x − 28 15 21 1 © UCLES 2022 Page 10 of 14 Note – 3x counts as two terms. S9/02 Mathematics Stage 9 Paper 2 Mark Scheme Question 16 Answer ( x =) 5 9 ( y − 4) Marks 2022 Part Marks 2 Award 1 mark for y − 4 = Guidance 9 5 x or 5 y = 9 x + 20 or y 1 4 = x+ 9 5 9 17(a) 3.5 and 2 and – 2.5 2 Award 1 mark for one or two correct values. 17(b) Straight line joining (–1, 3.5) to (3, – 2.5). 1 18 980 (cm2) 3 Accept equivalent answers for 2 marks, 5 y − 20 e.g. ( x =) 9 Accept values in range of 979 to 981 for 3 marks. Accept values for π in the range of 22 3.14 to 7 Award 1 mark for π × 12 × 20 or better. Or better, e.g.753.9... and Award 1 mark for area of circle π × 62 or better. © UCLES 2022 Page 11 of 14 Or better, e.g. 113.0... S9/02 Mathematics Stage 9 Paper 2 Mark Scheme Question Answer Marks Part Marks 2022 Guidance 19(a) 0.6 for chapattis and 0.5 for all drink branches 2 Award 1 mark for 0.6 for chapattis or 0.5 for all drink branches. Accept equivalent fractions and percentages. 19(b) 0.3 2 Accept equivalent fractions and percentages. Award 1 mark for their P(chapattis) × their P(tea). 20 48 (cm2) 2 Award 1 mark for 54 ÷ 18, implied by 3 or 16 × their 3 21 43 450 ≤ Eva’s number < 43 500 2 Award 1 mark for one correct limit or for 42 500 and 43 500 (limits for 43 000) and 43 450 and 43 550 (limits for 43 500). 22 59.2 (cm2) 4 Award 3 marks for complete method, 3 i.e. × π × 4.22 + 4.22 4 or Award 2 marks for 3 4 × π × 4.22 or Award 1 mark for π × 4.22 and If 3 marks not scored, award 1 mark for 4.2 × 4.2 or for rounding their more accurate area correctly to one decimal place. © UCLES 2022 Page 12 of 14 Their P(chapattis) and their P(tea) must be between 0 and 1 3 marks implied by answers which round to 59.2 (cm2). S9/02 Mathematics Stage 9 Paper 2 Mark Scheme Question 23 Answer 76.8 (cm3) Marks 2022 Part Marks Guidance Accept 77 with correct working for 4 marks. 4 13.3 2 − 12.12 Award 2 marks for 2 marks implied by 5.52… or 2 © UCLES 2022 2 2 Award 1 mark for x + 12.1 = 13.3 or better Or better for 1 mark, e.g. 13.32 − 12.12 or 30.48 In addition, award 1 mark for their AB from attempt at Pythagoras × 12.1 × 0.5 × 2.3 An attempt at Pythagoras must involve 13.3 2 and 12.12 , but these may be added rather than subtracted. Page 13 of 14 S9/02 Mathematics Stage 9 Paper 2 Mark Scheme BLANK PAGE © UCLES 2022 Page 14 of 14 2022 Cambridge Lower Secondary Sample Test For use with curriculum published in September 2020 Mathematics Paper 1 Stage 9 1 hour Name Additional materials: Geometrical instruments Tracing paper (optional) INSTRUCTIONS • Answer all questions. • Write your answer to each question in the space provided. • You should show all your working on the question paper. • You are not allowed to use a calculator. INFORMATION • The total mark for this paper is 50. • The number of marks for each question or part question is shown in brackets [ ]. Maths_S9_01/7RP © UCLES 2020 2 1 Write one of the signs < = > to complete each statement. 0.3 × 102 9 20 × 10‒1 2 [1] 2 Here are some ratios. A B C D 9 mm : 1.5 cm 60 cm : 1 m 800 g : 1.2 kg 150 m : 0.25 km Write each ratio in the correct position in the table. One has been done for you. Ratios equivalent to 2 : 3 Ratios equivalent to 3 : 5 A [1] © UCLES 2020 M/S9/01 3 3 (a) Simplify. 5mn 2n [1] (b) Simplify. 4n +12 6 [1] (c) Expand and simplify. (x + 2) (x – 2) [1] 4 Solve. 4x – 1 < 2x + 19 [2] © UCLES 2020 M/S9/01 [Turn over 4 5 Work out. (a) (8 × 0.75)2 × 0.5 [1] (b) 2 2 ×127 − × 7 5 5 [2] 6 A has coordinates (6, –2). B has coordinates (18, 8). Pierre says that the midpoint of AB has coordinates (12, 5). Show that Pierre is wrong. Show your working. [1] © UCLES 2020 M/S9/01 5 7 Some boys take a mathematics test. The scatter graph shows the time taken by each boy to complete the test and the mark they each got. 40 30 Mark 20 10 0 20 30 10 Time (minutes) 40 (a) Draw a ring around the type of correlation shown on the scatter graph. strong negative weak negative no correlation weak positive strong positive [1] (b) Seven girls take the same mathematics test. The scatter graph for the girls shows strong positive correlation. Complete the scatter graph to show a possible set of results for the girls. 40 30 Mark 20 10 0 10 20 30 Time (minutes) 40 [1] © UCLES 2020 M/S9/01 [Turn over 6 8 Look at the numbers in the box. π 3 8 2 5 1.289 8 1.5 Draw a ring around all the irrational numbers. 9 [1] The point P has coordinates (1, 2). y 6 5 4 3 P 2 1 −6 −5 −4 −3 −2 −1 0 1 2 3 4 5 6 x −1 −2 −3 −4 −5 −6 −5 The point P is translated by the vector to give the point Q. 1 The point Q is then reflected in the line y = –1 to give the point R. Find the coordinates of the point R. ( © UCLES 2020 M/S9/01 , ) [2] 7 10 Here are the nth term rules of three sequences. Sequence A Sequence B Sequence C 7n 5n – 1 20 – 3n Match each of these numbers to the sequence it is a term in. 24 Sequence A 11 Sequence B 35 Sequence C [1] 11 is an integer greater than 1 is a decimal smaller than 1 ÷ = 60 Write down possible values for and = = [1] © UCLES 2020 M/S9/01 [Turn over 8 12 In this question use a ruler and compasses only. Show your construction lines. (a) Complete this construction of an angle of 60°. [1] (b) In the diagram angle BAC = 90°. Use the diagram to construct an angle of 45°. B A C [2] © UCLES 2020 M/S9/01 9 13 Look at this sequence of calculations. 1 × 5 – 2 × 3 = ‒1 2×6–3×4=0 3×7–4×5=1 4×8–5×6=2 (a) Write down the next calculation in this sequence. × × – = [1] (b) Use the sequence to work out. 37 × 41 – 38 × 39 [1] 14 (a) The population of Italy is about 60 000 000 Write this population in standard form. [1] (b) The mass of a beetle is 0.0032 kg. Write this mass in standard form. kg © UCLES 2020 M/S9/01 [1] [Turn over 10 15 A film is shown at a cinema at 2 pm and at 7 pm every day. The diagram shows the number of people watching the film at 7 pm on 10 days. 7 pm 2 pm 2 0 5 7 8 1 1 3 5 2 0 5 9 9 3 4 Key : 2 | 2 | 0 represents 22 people watching at 2 pm and 20 people watching at 7 pm. The number of people watching the film at 2 pm on these days is 32 25 18 37 22 43 27 31 34 28 (a) Complete the back-to-back stem-and-leaf diagram above to show the information for 2 pm. One has been done for you. [2] (b) Make one comparison between the number of people that watch the film at 7 pm and the number that watch at 2 pm. [1] © UCLES 2020 M/S9/01 11 16 The diagram shows a trapezium. All dimensions are in centimetres. NOT TO SCALE 6n 2n 10n Find an expression for the area of the trapezium. Simplify your answer as much as possible. cm2 [2] 17 Solve. 9 =6 x−5 x= © UCLES 2020 M/S9/01 [2] [Turn over 12 18 The diagram shows the positions of two aeroplanes, A and B. NOT TO SCALE North B 25° A Naomi says, ‘The bearing of B from A is 25°.’ Write down two criticisms of Naomi’s statement. Criticism 1 Criticism 2 [2] 19 Work out. 2 2 1 ÷1 3 5 Give your answer as a mixed number in its simplest form. [3] © UCLES 2020 M/S9/01 13 20 Yuri and Mia each make a journey. The travel graph shows Yuri’s journey. 400 300 Yuri Distance travelled (km) 200 100 0 0 1 2 3 Time (hours) 4 5 Mia starts her journey at the same time as Yuri. Mia’s journey lasts 2 hours less than Yuri’s journey. Mia’s average speed is twice Yuri’s average speed. Draw a straight line on the travel graph to show Mia’s journey. [2] © UCLES 2020 M/S9/01 [Turn over 14 21 Chen has two fair spinners. Spinner B Spinner A Blue Red Yellow Yellow Red Red Yellow Red Yellow Chen spins both spinners. (a) Complete the tree diagram. Outcome from Spinner A Outcome from Spinner B 1 5 3 4 Red Red ............ ............ Yellow Red ............ Blue ............ Yellow [2] (b) Calculate the probability that both spinners land on a red section. [1] © UCLES 2020 M/S9/01 15 22 A linear function maps input numbers to output numbers. Complete the input-output table for this function. Input Output 1 4 2 10 5 28 10 n [2] 23 Use algebra to solve the simultaneous equations. x − 2 y = 13 2 x + y = 11 x= © UCLES 2020 y= M/S9/01 [3] [Turn over 16 24 The diagram shows a triangular prism. 5 cm 3 cm NOT TO SCALE 6 cm 4 cm The triangular faces are painted red. The rectangular faces are painted blue. Find the fraction of the surface area that is painted red. [3] Copyright © UCLES, 2020 Cambridge Assessment International Education is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of the University of Cambridge Local Examinations Syndicate (UCLES), which itself is a department of the University of Cambridge. 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. © UCLES 2020 M/S9/01 Cambridge Lower Secondary Sample Test For use with curriculum published in September 2020 Mathematics Paper 1 Mark Scheme Stage 9 Maths_S9_01_MS/8RP © UCLES 2020 S9/01 Mathematics Stage 9 Paper 1 Mark Scheme from 2020 General guidance on marking Difference in printing It is suggested that schools check their printed copies for differences in printing that may affect the answers to the questions, for example in measurement questions. Brackets in mark scheme When brackets appear in the mark scheme this indicates extra information that is not required but may be given. For example: Question Answer Mark 5 1 19.7 or 19.6(58) Part marks Guidance This means that 19.6 is an acceptable truncated answer even though it is not the correct rounded answer. The … means you can ignore any numbers that follow this; you do not need to check them. Accept • any correct rounding of the numbers in the brackets, e.g. 19.66 • truncations beyond the brackets, e.g. 19.65 Do not accept • 19.68 (since the numbers in brackets do not have to be present but if they are they should be correct). © UCLES 2020 Page 2 of 14 S9/01 Mathematics Stage 9 Paper 1 Mark Scheme from 2020 These tables give general guidelines on marking learner responses that are not specifically mentioned in the mark scheme. Any guidance specifically given in the mark scheme supersedes this guidance. Number and place value The table shows various general rules in terms of acceptable decimal answers. Accept Accept omission of leading zero if answer is clearly shown, e.g. .675 Accept tailing zeros, unless the question has asked for a specific number of decimal places or significant figures, e.g. 0.7000 Accept a comma as a decimal point if that is the convention that you have taught the learners, e.g. 0,638 Units For questions involving quantities, e.g. length, mass, money, duration or time, correct units must be given in the answer. Units are provided on the answer line unless finding the units is part of what is being assessed. The table shows acceptable and unacceptable versions of the answer 1.85 m. Accept Do not accept If the unit is given on the answer line, e.g. ............................ m Correct conversions, provided the unit is stated unambiguously, e.g. ......185 cm...... m (this is unambiguous since the unit cm comes straight after the answer, voiding the m which is now not next to the answer) ......185...... m ......1850......m etc. If the question states the unit that the answer should be given in, e.g. ‘Give your answer in metres’ 1.85 1 m 85 cm 185; 1850 Any conversions to other units, e.g. 185 cm © UCLES 2020 Page 3 of 14 S9/01 Mathematics Stage 9 Paper 1 Mark Scheme from 2020 Money In addition to the rules for units, the table below gives guidance for answers involving money. The table shows acceptable and unacceptable versions of the answer $0.30 Accept Do not accept If the amount is in dollars and cents, the answer should be given to two decimal places $0.30 $0.3 For an integer number of dollars it is acceptable not to give any decimal places, e.g. $9 or $9.00 $09 or $09.00 If units are not given on the answer line Any unambiguous indication of the correct amount, e.g. 30 cents; 30 c $0.30; $0-30; $0=30; $00:30 30 or 0.30 without a unit $30; cents 0.30 Ambiguous answers, e.g. $30 cents; $0.30 c; $0.30 cents (as you do not know which unit applies because there are units either side of the number) If $ is shown on the answer All unambiguous indications, line e.g. $......0.30......; $......0-30......; $......0=30......; $......00:30...... $......30...... If cents is shown on the answer line ......0.30......cents ......30......cents Ambiguous answers, e.g. $......30 cents......; $......0.30 cents...... unless units on the answer line have been deleted, e.g. $......30 cents...... Ambiguous answers, e.g. ......$30 ......cents; ......$0.30 ......cents unless units on the answer line have been deleted, e.g. ......$0.30......cents © UCLES 2020 Page 4 of 14 S9/01 Mathematics Stage 9 Paper 1 Mark Scheme from 2020 Duration In addition to the rules for units, the table below gives guidance for answers involving time durations. The table shows acceptable and unacceptable versions of the answer 2 hours and 30 minutes. Accept Do not accept Any unambiguous indication using any reasonable abbreviations of hours (h, hr, hrs), minutes (m, min, mins) and seconds (s, sec, secs), e.g. 2 hours 30 minutes; 2 h 30 m; 02 h 30 m Incorrect or ambiguous formats, e.g. 2.30; 2.3; 2.30 hours; 2.30 min; 2 h 3; 2.3 h (this is because this indicates 0.3 of an hour (i.e.18 minutes) rather than 30 minutes) Any correct conversion with appropriate units, e.g. 2.5 hours; 150 mins unless the question specifically asks for time given in hours and minutes 02:30 (as this is a 24-hour clock time, not a time interval) 2.5; 150 Time The table below gives guidance for answers involving time. The table shows acceptable and unacceptable versions of the answer 07:30 Accept Do not accept If the answer is required in 24-hour format Any unambiguous indication of correct answer in numbers, words or a combination of the two, e.g. 07:30 with any separator in place of the colon, e.g. 07 30; 07,30; 07-30; 0730 7:30 7:30 am 7 h 30 m 7:3 730 7.30 pm 073 07.3 If the answer is required in 12-hour format Any unambiguous indication of correct answer in numbers, words or a combination of the two, e.g. 7:30 am with any separator in place of the colon, e.g. 7 30 am; 7.30 am; 7-30 am Absence of am or pm 1930 am 7 h 30 m 7:3 730 7.30 pm 7.30 in the morning Half past seven (o’clock) in the morning Accept am or a.m. © UCLES 2020 Page 5 of 14 S9/01 Mathematics Stage 9 Paper 1 Mark Scheme from 2020 Algebra The table shows acceptable and unacceptable versions of the answer 3x – 2 Accept Do not accept x3 – 2; 3 × x – 2 3x + –2 if it is supposed to be in simplest form Case change in letters Changes in letters as long as there is no ambiguity Accept extra brackets when factorising, e.g. 5(x + (3 + y)) Teachers must mark the final answer given. If a correct answer is seen in working but final answer is given incorrectly then the final answer must be marked. If no answer is given on the answer line then the final line of the working can be taken to be the final answer. Inequalities The table shows acceptable and unacceptable versions of various answers. For the following Accept Do not accept For 6 ≤ x < 8 [6, 8) <x< For x ≤ –2 (–∞,–2] x < –2 For x > 3 (3, ∞) 3<x Just ‘3’ written on the answer line, even if x > 3 appears in the working Plotting points The table shows acceptable and unacceptable ways to plot points. Do not accept Accept Crosses or dots plotted within ± 1 square of 2 A horizontal line and vertical line from the axes meeting at the required point the correct answer The graph line passing through a point implies the point even though there is no cross © UCLES 2020 Page 6 of 14 Mathematics Stage 9 Paper 1 Mark Scheme S9/01 Question 1 Answer Mark > = 2 Part Marks Ratios equivalent to 3 : 5 (A) C B Guidance Both symbols correct. 1 Ratios equivalent to 2 : 3 from 2020 1 All entries correct. D 3(a) 5m 5 or 2.5m or m 2 2 1 3(b) 2n + 6 2n or +2 3 3 1 3(c) x2 – 4 1 4 x < 10 or 10 > x 2 Award 1 mark for 4x – 2x < 19 + 1 or for 2x < 20 or equivalent. 5(a) 18 1 5(b) 48 2 © UCLES 2020 or equivalent simplified 2 × 120 or for sight 5 254 of either 50.8 or ( – )2.8 or 5 or 14 (–) 5 Award 1 mark for Page 7 of 14 Accept use of = or > signs for 1 mark. Mathematics Stage 9 Paper 1 Mark Scheme S9/01 Question 6 7(a) Answer Any correct demonstration that the y-coordinate of the midpoint is not 5, e.g. −2 + 8 • =3 2 • 8 ‒ ‒2 = 10 and 8 – 5 = 3 • 5 is 7 away from –2 but only 3 away from 8 strong negative weak negative no correlation weak positive 7(b) π 3 © UCLES 2020 (‒4, ‒5) 8 Part Marks Guidance 1 Do not accept without working: • The midpoint is at (12, 3) • 5 is not halfway between –2 and 8 1 Accept any clear indication. 1 Accept six or eight points plotted. 1 Correct two answers ringed and no other answers. strong positive seven points plotted demonstrating strong positive correlation. 8 9 Mark from 2020 2 5 1.289 8 1.5 Accept any clear indication. 2 Award 1 mark either for (‒4, 3) seen or plotted on grid or for reflecting their point Q in the line 𝑦 = ‒1 Page 8 of 14 Mathematics Stage 9 Paper 1 Mark Scheme S9/01 Question 10 11 © UCLES 2020 Answer 24 Sequence A 11 Sequence B 35 Sequence C Any possible values that satisfy all three conditions: is an integer greater than 1 is a decimal smaller than 1. ÷ = 60 Mark Part Marks from 2020 Guidance 1 1 Page 9 of 14 Possible values include = 30 = 0.5 = 6 = 0.1 = 15 = 0.25 etc. Mathematics Stage 9 Paper 1 Mark Scheme S9/01 Question Answer Mark 12(a) Part Marks 1 from 2020 Guidance Arc drawn radius 5 cm (tolerance ± 2 mm) centred on 2nd dot and intersecting first arc. Line drawn to make the 60° angle. 12(b) Correct bisection of angle BAC, e.g. B A 2 Award 1 mark for an arc drawn at A that intersects both AB and AC. C 13(a) 5×9–6×7=3 1 13(b) 35 1 14(a) 6 × 107 1 14(b) 3.2 × 10–3 (kg) 1 © UCLES 2020 Page 10 of 14 Arcs must be seen. Mathematics Stage 9 Paper 1 Mark Scheme S9/01 Question Answer Mark 2 pm 15(a) 8 7 7 4 5 2 8 (2) 1 3 0 1 2 3 4 Part Marks Any correct comparison, e.g. • Fewer people watched at 7pm (on average) • The number watching at 7pm is less variable 1 16 16n2 (cm2) 2 Award 1 mark for a correct unsimplified expression for the area, 6n + 10n × 2n or 8n × 2n such as 2 18 (x =) 6.5 or 6 1 2 Bearings should have 3 digits and Bearings should be measured (clockwise) from the North line. Guidance 2 Award 1 mark either if the numbers in all rows are correct but not ordered or if rows are ordered but one number is incorrectly entered or omitted. 15(b) 17 from 2020 The answer must involve a comparison of the two sets of data. 2 Award 1 mark for 9 = 6(x – 5) or 9 = 6x – 30 or x – 5 = 1.5 Accept improper fraction. 2 Award 1 mark for one correct criticism. For 1 mark accept • The correct bearing is 65(°) • She should have done 90 – 25 Accept the correct bearing is 065° for 2 marks. © UCLES 2020 Page 11 of 14 Mathematics Stage 9 Paper 1 Mark Scheme S9/01 Question 19 Answer 2 2 9 Mark 3 from 2020 Part Marks Award 2 marks for Guidance 8 5 × 3 6 An answer of 40 20 or implies 2 18 9 marks. or Award 2 marks for writing both improper fractions with a common 40 18 denominator, ÷ 15 15 Award 1 mark for sight of both 8 and 3 6 5 or Award 1 mark for correct method of dividing their improper fractions. © UCLES 2020 Page 12 of 14 A correct method would be either to invert the second fraction 8 5 and then multiply, their × their , 3 6 or to convert both improper fractions to a common denominator. Mathematics Stage 9 Paper 1 Mark Scheme S9/01 Question 20 Answer Mark Line between (0, 0) and (3, 300) Part Marks from 2020 Guidance 2 Award 1 mark either for a line indicating a journey lasting 3 hours. 400 or for a line with gradient 100 300 Distance travelled 200 (km) Yuri 100 0 21(a) 4 2 3 Time (hours) 1 Outcome from Spinner A Outcome from Spinner B 1 5 3 4 1 4 Red 5 2 Award 1 mark for two or three fractions correctly placed on diagram. Red 4 5 1 5 Yellow Red Blue 4 5 Yellow 21(b) 3 or 0.15 or 15% 20 1 22 (10 →) 58 (n →) 6n – 2 or n × 6 – 2 2 Award 1 mark for any one correct. © UCLES 2020 Accept equivalent fractions, decimals or percentages. Page 13 of 14 Accept equivalents. Mathematics Stage 9 Paper 1 Mark Scheme S9/01 Question 23 Answer An algebraic method leading to x = 7, y = –3 Mark Part Marks 3 Award 2 marks for sight of an algebraic method leading to either x = 7 or y = –3 Award 1 mark for correct substitution and evaluation from incorrect first value, i.e. two values satisfying one of the original equations. or A correct method for eliminating either x or y. 24 1 7 3 Award 2 marks for correct red area (12) and correct blue area (72) or 84 Award 1 mark for correct method to 1 1 find red area ( × 3 × 4 + × 3 × 4) or 2 2 blue area (3 × 6 + 4 × 6 + 5 × 6) © UCLES 2020 from 2020 Page 14 of 14 Guidance Do not accept a trial and improvement method. Correct method could include: • re-arranging one of the equations to make one variable the subject and then substitute their arrangement into the other equation, • making the coefficients of x or y equal with no more than one arithmetic error or sign error, followed by an appropriate, consistent subtraction or addition across all three terms. Accept equivalent fractions to 1 7 Accept equivalent calculations. Cambridge Lower Secondary Sample Test For use with curriculum published in September 2020 Mathematics Paper 2 Stage 9 1 hour Name Additional materials: Calculator Geometrical instruments Tracing paper (optional) INSTRUCTIONS Answer all questions. Write your answer to each question in the space provided. You should show all your working on the question paper. You may use a calculator. • • • • INFORMATION • The total mark for this paper is 50. • The number of marks for each question or part question is shown in brackets [ ]. Maths_S9_02/7RP © UCLES 2020 2 1 Simplify. x4 × x5 [1] 2 2 Here is an expression 3( x − 2) 5 A value of x is substituted into the expression. Tick () the operation that is performed first when the value of this expression is calculated. ×3 –2 Square ÷5 [1] 3 The length of a book is 25 cm to the nearest centimetre. Complete these statements about the length of the book. The lower limit for the length of the book is cm. The upper limit for the length of the book is cm. [2] © UCLES 2020 M/S9/02 3 4 The diagram shows two straight lines crossing a pair of parallel lines. NOT TO SCALE a e b c d Here are some statements about angle a. Tick () the two correct statements. Angle a is corresponding to angle b. Angle a is alternate to angle c. Angle a is equal to angle d. Angle a is vertically opposite to angle e. [1] © UCLES 2020 M/S9/02 [Turn over 4 5 (a) Find the size of each interior angle in a regular pentagon. ° [2] (b) The cross-section of a prism is a regular pentagon. Draw a ring around the number of planes of symmetry of the prism. 1 2 5 6 [1] © UCLES 2020 M/S9/02 5 6 A cylinder has a radius of 7 cm and a height of 15 cm. NOT TO SCALE 7 cm 15 cm Calculate the volume of the cylinder. cm3 © UCLES 2020 M/S9/02 [2] [Turn over 6 7 (a) Complete the table of values for y = x2 – 4 x –3 –2 –1 0 y 0 1 2 –4 –3 0 3 [1] (b) Draw the graph of y = x2 – 4 for values of x between –3 and 3 y 6 5 4 3 2 1 –3 –2 –1 0 1 2 3 x –1 –2 –3 –4 [2] © UCLES 2020 M/S9/02 7 8 The table shows information about the temperatures in 20 cities one day. Temperature, t (°C) Frequency 6≤t<8 3 8 ≤ t < 10 2 10 ≤ t < 12 4 12 ≤ t < 14 3 14 ≤ t < 16 8 (a) Complete the frequency polygon to show this information. 8 6 Frequency 4 2 0 6 8 10 12 14 16 Temperature, t (°C) [1] (b) Put a ring around the interval that contains the median temperature. 6≤t<8 8 ≤ t < 10 10 ≤ t < 12 12 ≤ t < 14 14 ≤ t < 16 [1] (c) Find the greatest possible value of the range of the temperatures. °C © UCLES 2020 M/S9/02 [1] [Turn over 8 9 (a) Here are the equations of some straight line graphs. y=x+2 y = 2x – 3 2y = x – 3 x=2 Draw a ring around the graph with gradient 2 [1] (b) Yuri’s teacher asks him to write down three properties that the graphs of y = 2x + 1 and y = 6x + 1 both have in common. Yuri has written down two properties. 1 They are both straight lines. 2 They both have a positive gradient. 3 Complete Yuri’s list by writing down another property the two graphs both have in common. [1] © UCLES 2020 M/S9/02 9 10 The diagram shows two shapes on a grid. y 10 9 8 7 Q 6 5 4 3 P 2 1 0 1 2 3 4 5 6 7 8 10 x 9 Shape Q is an enlargement of shape P. (a) Write down the scale factor of this enlargement. [1] (b) Find the centre of the enlargement. ( © UCLES 2020 M/S9/02 , ) [1] [Turn over 10 11 The diagram shows a semi-circle with a radius of 12.3 cm. NOT TO SCALE Calculate the perimeter of the semi-circle. cm [3] 12 It takes 5 workers 300 minutes to decorate some cakes. Find how many minutes it would take 12 workers to decorate the same number of cakes. minutes © UCLES 2020 M/S9/02 [2] 11 13 The table shows the prices of two laptops. Laptop A $650 Laptop B $760 The price of Laptop A increases by 12%. The price of Laptop B decreases by 5%. Tick () to show which laptop is more expensive after these changes. Laptop A Laptop B Show how you worked out your answer. [3] © UCLES 2020 M/S9/02 [Turn over 12 14 The nth term of a sequence is n2 + a. The 6th term of the sequence is 29 Find the sum of the first 4 terms. [3] 15 Make t the subject of the formula w = 2t −1 5 t= [2] 16 Show that 4y(5 – 9y) + 6y(6y – 1) simplifies to 14y. [2] © UCLES 2020 M/S9/02 13 17 ABCD is a kite. E is a point on CD. A NOT TO SCALE 78° B x° D E 38° C Calculate the value of x. [3] © UCLES 2020 M/S9/02 [Turn over 14 18 Rajiv sells balloons that are coloured either red, green, blue or yellow. A customer is given a balloon at random. 25% of the balloons are red. The probability that a customer is given a green balloon is 0.05 A customer is twice as likely to be given a blue balloon as a green balloon. Calculate the probability that the balloon is yellow. You may use the table to help you. Colour Red Green Blue Yellow Probability [2] 19 Bag A contains 56 counters. The counters in Bag A are shared between Angelique and Hassan in the ratio 3 : 5 Bag B also contains some counters. The counters in Bag B are shared between Angelique and Hassan in the ratio 4 : 3 In total Angelique receives 45 counters. Find the number of counters in total in Bag B. [3] © UCLES 2020 M/S9/02 15 20 The table gives some information about the distances jumped by a group of boys and by a group of girls. Boys Girls Mean 3.36 metres 3.18 metres Range 1.52 metres 1.05 metres Mia writes these comparisons of the distances jumped by the boys and the girls. 1 2 The boys have a larger mean than the girls. The boys have a larger range than the girls. Mia’s teacher tells her that her comparisons would be better if she wrote them in context. Write improved comparisons of the distances jumped by the boys and the girls. 1 2 [2] 21 Gabriella is a music teacher. She wants to know if children in her school like music. She asks a sample of children from the school orchestra if they like music. Explain why the data Gabriella collects is likely to be biased. [1] © UCLES 2020 M/S9/02 [Turn over 16 22 The diagram shows a rectangle ABCD. E A F B NOT TO SCALE 12.5 cm 18 cm D C 24 cm E is the midpoint of AB. EF = 12.5 cm. Calculate the shaded area. cm2 [4] Copyright © UCLES, 2020 Cambridge Assessment International Education is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of the University of Cambridge Local Examinations Syndicate (UCLES), which itself is a department of the University of Cambridge. 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. © UCLES 2020 M/S9/02 Cambridge Lower Secondary Sample Test For use with curriculum published in September 2020 Mathematics Paper 2 Mark Scheme Stage 9 Maths_S9_02_MS/9RP © UCLES 2020 Mathematics Stage 9 Paper 2 Mark Scheme S9/02 from 2020 General guidance on marking Difference in printing It is suggested that schools check their printed copies for differences in printing that may affect the answers to the questions, for example in measurement questions. Brackets in mark scheme When brackets appear in the mark scheme this indicates extra information that is not required but may be given. For example: Question Answer 5 19.7 or 19.6(58) Mark Part marks Guidance 1 This means that 19.6 is an acceptable truncated answer even though it is not the correct rounded answer. The … means you can ignore any numbers that follow this; you do not need to check them. Accept any correct rounding of the numbers in the brackets, e.g. 19.66, • • truncations beyond the brackets, e.g. 19.65 Do not accept • 19.68 (since the numbers in brackets do not have to be present but if they are they should be correct). © UCLES 2020 Page 2 of 14 S9/02 Mathematics Stage 9 Paper 2 Mark Scheme from 2020 These tables give general guidelines on marking learner responses that are not specifically mentioned in the mark scheme. Any guidance specifically given in the mark scheme supersedes this guidance. Number and place value The table shows various general rules in terms of acceptable decimal answers. Accept Accept omission of leading zero if answer is clearly shown, e.g. .675 Accept tailing zeros, unless the question has asked for a specific number of decimal places or significant figures, e.g. 0.7000 Accept a comma as a decimal point if that is the convention that you have taught the learners, e.g. 0,638 Units For questions involving quantities, e.g. length, mass, money, duration or time, correct units must be given in the answer. Units are provided on the answer line unless finding the units is part of what is being assessed. The table shows acceptable and unacceptable versions of the answer 1.85 m. If the unit is given on the answer line, e.g. ............................ m Accept Do not accept Correct conversions, provided the unit is stated unambiguously, e.g. ......185 cm...... m (this is unambiguous since the unit cm comes straight after the answer, voiding the m which is now not next to the answer) ......185...... m ......1850...... m etc. 1.85 If the question states the unit that the answer should be 1 m 85 cm given in, e.g. ‘Give your answer in metres’ © UCLES 2020 Page 3 of 14 185; 1850 Any conversions to other units, e.g. 185 cm S9/02 Mathematics Stage 9 Paper 2 Mark Scheme from 2020 Money In addition to the rules for units, the table below gives guidance for answers involving money. The table shows acceptable and unacceptable versions of the answer $0.30 If the amount is in dollars and cents, the answer should be given to two decimal places If units are not given on the answer line Accept Do not accept $0.30 $0.3 For an integer number of dollars it is acceptable not to give any decimal places, e.g. $9 or $9.00 $09 or $09.00 Any unambiguous indication of the correct amount, e.g. 30 cents; 30 c $0.30; $0-30; $0=30; $00:30 30 or 0.30 without a unit $30; 0.30 cents Ambiguous answers, e.g. $30 cents; $0.30 c; $0.30 cents (as you do not know which unit applies because there are units either side of the number) If $ is shown on the answer line If cents is shown on the answer line All unambiguous indications, e.g. $......0.30......; $......0-30......; $......0=30......; $......00:30...... ......30......cents $......30...... Ambiguous answers, e.g. $......30 cents......; $......0.30 cents...... unless units on the answer line have been deleted, e.g. $......30 cents...... ......0.30......cents Ambiguous answers, e.g. ......$30 ......cents; ......$0.30 ......cents unless units on the answer line have been deleted, e.g. ......$0.30......cents © UCLES 2020 Page 4 of 14 S9/02 Mathematics Stage 9 Paper 2 Mark Scheme from 2020 Duration In addition to the rules for units, the table below gives guidance for answers involving time durations. The table shows acceptable and unacceptable versions of the answer 2 hours and 30 minutes. Accept Do not accept Any unambiguous indication using any reasonable abbreviations of hours (h, hr, hrs), minutes (m, min, mins) and seconds (s, sec, secs), e.g. 2 hours 30 minutes; 2 h 30 m; 02 h 30 m Incorrect or ambiguous formats, e.g. 2.30; 2.3; 2.30 hours; 2.30 min; 2 h 3; 2.3 h (this is because this indicates 0.3 of an hour (i.e.18 minutes) rather than 30 minutes) Any correct conversion with appropriate units, e.g. 2.5 hours; 150 mins unless the question specifically asks for time given in hours and minutes 02:30 (as this is a 24-hour clock time, not a time interval) 2.5; 150 Time The table below gives guidance for answers involving time. The table shows acceptable and unacceptable versions of the answer 07:30 Accept Do not accept If the answer is required in 24-hour format Any unambiguous indication of correct answer in numbers, words or a combination of the two, e.g. 07:30 with any separator in place of the colon, e.g. 07 30; 07,30; 07-30; 0730 7:30 7:30 am 7 h 30 m 7:3 730 7.30 pm 073 07.3 If the answer is required in 12-hour format Any unambiguous indication of correct answer in numbers, words or a combination of the two, e.g. 7:30 am with any separator in place of the colon, e.g. 7 30 am; 7.30 am; 7-30 am Absence of am or pm 1930 am 7 h 30 m 7:3 730 7.30 pm 7.30 in the morning Half past seven (o’clock) in the morning Accept am or a.m. © UCLES 2020 Page 5 of 14 S9/02 Mathematics Stage 9 Paper 2 Mark Scheme from 2020 Algebra The table shows acceptable and unacceptable versions of the answer 3x – 2 Accept Do not accept x3 – 2; 3 x – 2 3x –2 if it is supposed to be in simplest form Case change in letters Changes in letters as long as there is no ambiguity Accept extra brackets when factorising, e.g. 5(x (3 y)) Teachers must mark the final answer given. If a correct answer is seen in working but final answer is given incorrectly then the final answer must be marked. If no answer is given on the answer line then the final line of the working can be taken to be the final answer. Inequalities The table shows acceptable and unacceptable versions of various answers. For the following Accept Do not accept For 6 ≤ x 8 [6, 8) x For x ≤ –2 (–∞,–2] x –2 For x > 3 (3, ∞) 3x Just ‘3’ written on the answer line, even if x > 3 appears in the working Plotting points The table shows acceptable and unacceptable ways to plot points. Accept Crosses or dots plotted within ± Do not accept 1 square of the 2 correct answer A horizontal line and vertical line from the axes meeting at the required point The graph line passing through a point implies the point even though there is no cross © UCLES 2020 Page 6 of 14 Mathematics Stage 9 Paper 2 Mark Scheme S9/02 Question Answer 1 x9 2 –2 3 Mark from 2020 Part Marks Guidance 1 1 24.5 or 24 2 Award 1 mark for one correct. 1 2 . and 25.5 or 25 1 2 Accept 25.49 4 1 Both boxes ticked and no others. 5(a) 108() 2 5(b) 2 6 2309(.07…) (cm3) 5 6 360 or 72 5 or for (5 – 2) 180 or 540 Award 1 mark for 1 2 Award 1 mark for 72 15 Accept answers between 2307.9 and 2309.4 Accept 2310 © UCLES 2020 Page 7 of 14 Mathematics Stage 9 Paper 2 Mark Scheme S9/02 Question 7(a) Answer Mark –3 –2 –1 0 1 2 3 5 0 –3 –4 –3 0 5 y 7(b) Part Marks 1 2 Award 1 mark for plotting six or seven of their points correctly. 6 5 4 3 2 1 –3 –2 –1 0 1 2 3 x –1 –2 –3 –4 © UCLES 2020 Page 8 of 14 from 2020 Guidance Mathematics Stage 9 Paper 2 Mark Scheme S9/02 Question Answer 8(a) Mark from 2020 Part Marks Guidance 1 8 6 Frequency 4 2 0 6 8 10 12 14 16 Temperature, t (°C) 8(b) 12 ≤ t < 14 1 8(c) 10 or 9.9(99…)(C) 1 9(a) y=x2 9(b) Both lines cross the y-axis at 1 or Both have a y-intercept of 1 1 10(a) 3 1 10(b) (0, 0) 1 11 63.2 or 63.2…(cm) 3 y = 2x – 3 2y = x – 3 x=2 1 Accept correct alternatives, e.g. They have the same y-intercept. They both have a positive y-intercept. 2 1 2 .3 2 ( 12.3 2) or equivalent Award 2 marks for or Award 1 mark for 2 12.3 © UCLES 2020 Page 9 of 14 Accept answer of 63 with correct working for 3 marks 123 implied by or 38.6… 10 implied by 123 or 77.2 to 77.3 5 Mathematics Stage 9 Paper 2 Mark Scheme S9/02 Question 12 Answer 125 (minutes) Mark 2 Part Marks Award 1 mark for 300 from 2020 Guidance 5 12 or for 300 5 (= 1500) 13 Ticks A and gives supporting figures 728 and 722 3 Award 2 marks for 650 1.12 or 650 650 0.12 or 728 and 760 0.95 or 760 – 760 × 0.05 or 722 Accept equivalent methods for finding the percentage increase or decrease. or Award 1 mark for 650 1.12 or 650 650 0.12 or 728 or 760 0.95 or 760 – 760 0.05 or 722 14 2 3 Award 2 marks for (12 – 7) + (22 – 7) + (32 – 7) (42 – 7) or better Award 1 mark for either (a =) 29 – 36 or –7 or (12 their a) + (22 their a) (32 their a) (42 their a) © UCLES 2020 Page 10 of 14 their a can be any non-zero number. Mathematics Stage 9 Paper 2 Mark Scheme S9/02 Question 15 Answer t 5 w 1 2 or equivalent Mark Part Marks 2 Award 1 mark for a correct first step of 2t either w 1= 5 or 5w = 2t – 5 16 A complete demonstration showing correct expansion of both brackets, e.g. 20y – 36y 2 36y 2 – 6y and 14y 2 Award 1 mark for 20y – 36y2 or for 36y 2 – 6y or for 20y – 6y 17 70(°) 3 Award 1 mark for 360 78 38 (ABC or ADC =) 2 or 122(°) and Award 1 mark for (angle EBC =) 180 – 90 – 38 or 52(°) or 360 – 90 – their ADC – 78 © UCLES 2020 from 2020 Page 11 of 14 Guidance Accept (t = ) w 1 for 2 marks. 0 .4 Accept an unsimplified answer, e.g. w 1 t= scores 1 mark. 2 5 May be seen on diagram. Mathematics Stage 9 Paper 2 Mark Scheme S9/02 Question 18 Answer 0.6 or 60% or 3 5 Mark Part Marks 2 Award 1 mark for 0.25 + 0.05 + 0.1 (= 0.4) or from 2020 Guidance Accept equivalent fractions. For the award of 1 mark all probabilities should be expressed in a consistent form. 25(%) + 5(%) + 10(%) (= 40) or 1 – their 0.4 19 42 3 Award 1 mark for correct method to find number of counters Angelique 3 (= 21) gets from Bag A, e.g. 56 35 Award 1 mark either for correct method to find the number of counters Hassan gets from 3 Bag B, e.g. (45 – their 21) or 18 4 or for correct method to find the total number of counters in Bag B, e.g. 34 (45 – their 21) 4 © UCLES 2020 Page 12 of 14 Implied by the four numbers in their table adding up to 1 Mathematics Stage 9 Paper 2 Mark Scheme S9/02 Question 20 Answer A correct comparison of both the means and ranges in context, e.g. Mark Part Marks 2 Award 1 mark for a correct comparison of either the means or the ranges in context. from 2020 Guidance Answers should refer to distances or jumps. Accept equivalent answers, e.g. The girls (generally) jump shorter distances. The boys jumped further (on average than the girls). and Do not allow answers which do not give a contextual interpretation of mean or range, e.g. The distances jumped by the boys have a larger mean. The girls’ jumps have a smaller range. The distances jumped by the boys were more varied/ less consistent / more spread out. 21 © UCLES 2020 An answer that implies that children in the orchestra will not be representative of all children, e.g. She should also ask children not in the orchestra. Children in the orchestra are more likely to like music. 1 Page 13 of 14 Mathematics Stage 9 Paper 2 Mark Scheme S9/02 Question 22 Answer 2 411 (cm ) Mark from 2020 Part Marks 4 Award 3 marks for AF = 3.5 cm and correct method to find shaded area, e.g. 24 18 – 0.5 3.5 12 Guidance The shaded area could be divided into a rectangle and a trapezium. Award 2 marks for AF = 3.5 cm or Award 2 marks for a correct method to find shaded area using a value for AF found after attempting Pythagoras’ theorem Award 1 mark for AF2 (24/2)2 = 12.52 or Award 1 mark for correct method to find shaded area using any value for AF © UCLES 2020 Page 14 of 14 AF = 12.5 2 (24 2)2 Cambridge Lower Secondary Progression Test * 0 4 7 7 2 1 4 3 8 0 * Mathematics paper 1 Stage 9 55 minutes For Teacher’s Use Page Name ………………………………………………….………………………. Additional materials: Geometrical instruments Tracing paper (optional) 1 2 3 READ THESE INSTRUCTIONS FIRST 4 Answer all questions in the spaces provided on the question paper. 5 Calculators are not allowed. 6 You should show all your working on the question paper. The number of marks is given in brackets [ ] at the end of each question or part question. The total number of marks for this paper is 45. 7 8 9 10 11 12 Total MATHS_S9_01_8RP © UCLES 2018 Mark 2 1 Complete these statements. For Teacher’s Use + −3 = 6.3 × −3 = 6.3 ÷ −3 = 6.3 [2] 2 Match each calculation to its answer. The first one has been done for you. 0.6 × 0.6 0.36 0.64 × 0.4 1.6 0.64 ÷ 0.4 0.625 0.4 ÷ 0.64 0.256 [1] 3 (a) Draw a ring around the best estimate of 7.1 14 56 7.5 7.9 28 [1] (b) Draw a ring around the best estimate of 3 25 2 3 5 8 [1] © UCLES 2018 M/S9/01 3 4 These are the elevations and plan of a shape. Front elevation For Teacher’s Use Side elevation Plan Write down the name of the shape. .................................................. [1] 5 One of these statements is wrong. Put a cross () next to the statement that is wrong. 26 × 25 = 26 × 100 ÷ 4 26 × 25 = (26 × 5) × (26 × 5) 26 × 25 = 25 × 26 26 × 25 = (30 × 25) – (4 × 25) [1] © UCLES 2018 M/S9/01 [Turn over 4 6 Oliver bakes 10 cakes. The scatter graph shows the mass (in grams) of each cake and the cooking time (in minutes). 90 80 70 60 Cooking 50 time (minutes) 40 30 20 10 0 500 600 700 800 900 1000 1100 1200 Mass (grams) (a) Write down the number of Oliver’s cakes that have a mass of more than 800 grams. .................................................. [1] (b) Describe the relationship between the mass of a cake and the cooking time. .................................................................................................................................. ............................................................................................................................. [1] (c) Oliver sees a recipe for a cake with a mass of 800 grams. The recipe says the cooking time is 80 minutes. Use the graph to explain why this cooking time may be incorrect. .................................................................................................................................. ............................................................................................................................. [1] © UCLES 2018 M/S9/01 For Teacher’s Use 5 7 Here is an arithmetic sequence. 24, 19, For Teacher’s Use 14, 9, 4, … Find an expression for the nth term of the sequence. .................................................. [2] 8 Calculate. 45.7 × 3.6 .................................................. [2] 9 (a) Write down the value of 20 .................................................. [1] (b) Write 2−3 as a fraction. .................................................. [1] © UCLES 2018 M/S9/01 [Turn over 6 10 The scale drawing shows the position of two schools, A and B. For Teacher’s Use North North A B The scale is 1 : 200 000 (a) Work out the real-life distance between school A and school B. Give your answer in kilometres. ............................................ km [1] (b) School C is on a bearing of 085° from school A, 305° from school B. Use your protractor to mark the position of school C on the scale drawing. © UCLES 2018 M/S9/01 [2] 7 11 (a) Complete the table of values for the equation 2y − 2 = 4x x –1 y –1 0 For Teacher’s Use 2 [1] (b) Use your results to plot the graph of 2y − 2 = 4x on this grid. y 6 5 4 3 2 1 –4 –3 –2 –1 0 1 2 3 4 5 x –1 –2 –3 –4 [2] © UCLES 2018 M/S9/01 [Turn over 8 12 Work out. For Teacher’s Use 1 1 4 3 2 3 .................................................. [2] 13 Expand and simplify. (x − 5)(x + 3) .................................................. [2] 14 The cross-section of a prism is shown in the diagram. NOT TO SCALE 2 cm 3 cm 4 cm The prism has a length of 15 cm. Calculate the volume of the prism. ...........................................cm3 [2] © UCLES 2018 M/S9/01 9 For Teacher’s Use 15 Tick () to show whether each of these statements is true or false. True False 10−1 = 0.1 400 × 104 = 400 000 0.3 ÷ 10−2 = 0.003 0.8 × 103 = 0.8 ÷ 10−3 [2] 16 The diagram shows two rectangles that both have a width of 6 cm. NOT TO SCALE 6 cm 6 cm The difference between the perimeters of the two rectangles is 10 cm. Calculate the difference between the areas of the two rectangles. ...........................................cm2 [2] © UCLES 2018 M/S9/01 [Turn over 10 17 Mia has a box that contains a large number of coloured cubes. She picks a cube at random. The probabilities of her picking a red, a blue or a green cube are shown in the table. Colour Red Blue Green Probability 0.35 0.25 0.3 (a) Explain how you know that the box must also contain some cubes of other colours. .................................................................................................................................. ............................................................................................................................. [1] (b) Half of the other coloured cubes are yellow. Work out the probability that Mia picks a yellow cube. .................................................. [1] 18 Write this expression as a single fraction. 3a a 5 5 .................................................. [1] 173 = 4913 19 34 = 2 × 17 Use these facts to work out 343 .................................................. [2] © UCLES 2018 M/S9/01 For Teacher’s Use 11 20 Use algebra to solve these simultaneous equations. For Teacher’s Use 3x + y = 5 x _ 2y = 4 You must show how you worked out your answer. x = ................................................ y = ................................................ [3] © UCLES 2018 M/S9/01 [Turn over 12 21 The price of an electronic book is $2.40 The price of the electronic book is 75% less than the price of the paper book. For Teacher’s Use Calculate the price of the paper book. $................................................ [2] 22 The diagram shows a quadrilateral containing two right angles. NOT TO SCALE 6 cm 7 cm a cm 9 cm Calculate the value of a. a = ............................................ [3] Copyright © UCLES, 2018 Cambridge Assessment International Education is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of the University of Cambridge Local Examinations Syndicate (UCLES), which itself is a department of the University of Cambridge. 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. © UCLES 2018 M/S9/01 Cambridge Lower Secondary Progression Test * 9 4 0 4 9 0 6 6 4 4 * Mathematics paper 2 Stage 9 55 minutes For Teacher’s Use Name ………………………………………………….………………………. Page 1 Additional materials: Calculator Geometrical instruments Tracing paper (optional) READ THESE INSTRUCTIONS FIRST Answer all questions in the spaces provided on the question paper. 2 3 4 5 6 Calculator allowed. You should show all your working on the question paper. The number of marks is given in brackets [ ] at the end of each question or part question. 7 8 9 10 The total number of marks for this paper is 45. 11 12 13 14 Total MATHS_S9_02_6RP © UCLES 2018 Mark 2 1 20 litres of petrol costs $48.40 For Teacher’s Use Work out the cost of 36 litres of the petrol. $................................................ [2] 2 Factorise. (a) 18a − 12 .................................................. [1] (b) 2c 2 + 5c .................................................. [1] 3 The diagram shows part of a regular polygon with 10 sides. NOT TO SCALE (a) Calculate the exterior angle of the polygon. ................................................° [1] (b) Calculate the interior angle of the polygon. ................................................° [1] © UCLES 2018 M/S9/02 3 4 Yuri makes a data collection sheet to find the heights of students in his school. He trials his data collection sheet with 15 students and gets these results. Height to the nearest centimetre Tally For Teacher’s Use Frequency 1–50 0 51–100 0 101–150 6 151–200 9 201–250 0 Yuri wants to improve his data collection sheet. Complete the first column with more suitable intervals. You may not need to use all the rows of the table. Height to the nearest centimetre [1] 5 Tick () to show if these statements are true or false when x = 3.5 x2 + 2 <14 True False 10x - 2 H 33 True False [1] © UCLES 2018 M/S9/02 [Turn over 4 6 Write as a power of n. For Teacher’s Use (a) n × n2 .................................................. [1] (b) n3 ÷ n2 .................................................. [1] 7 This is a rectangle on a coordinate grid. y 5 A 4 3 C M 2 1 –2 –1 0 –1 1 2 3 4 5 6 7 x –2 (a) The rectangle is enlarged with a scale factor of 2 The centre of the enlargement is C (0, 3). Find the coordinates of the image of vertex A. (.................. , ..................) [1] (b) The rectangle is rotated 90° clockwise about the point M (4, 3). Find the coordinates of the image of vertex A. (.................. , ..................) [1] © UCLES 2018 M/S9/02 5 8 A car travels 230 km. It uses 18.5 litres of petrol. For Teacher’s Use Calculate the distance travelled per litre of petrol for this car. Give your answer in km / l. ....................................... km / l [1] 9 Jamila has two sets of number cards. 1 3 5 2 4 6 She takes one card from each set. She multiplies the numbers on her two cards. Show the possible outcomes in the sample space diagram. [2] © UCLES 2018 M/S9/02 [Turn over 6 10 A publisher is deciding how much to charge for a new book. Carlos draws this graph to show how the expected sales of the book change with the price. 14 12 10 Expected sales of 8 book (thousands) 6 4 2 0 0 2 4 6 8 10 12 14 16 18 20 Price of book ($) (a) Describe how the expected sales vary with price. .................................................................................................................................. ............................................................................................................................. [1] (b) Work out how many more books the publisher would sell by charging $6 for the book instead of $12 ...................................thousand [2] © UCLES 2018 M/S9/02 For Teacher’s Use 7 11 One solution to x2 + 4x 25 is between 3 and 4 For Teacher’s Use Use trial and improvement to find this solution. Give your answer correct to 1 decimal place. Show your working. You may not need all the rows in the table. x x2 + 4x Comment 3 3 2 + 4 # 3 = 21 Too small 4 4 2 + 4 # 4 = 32 Too big x = ............................................ [3] © UCLES 2018 M/S9/02 [Turn over 8 12 The cost of a holiday last year is shown. For Teacher’s Use Hotel: $1300 Flights: $ 900 Total cost: $2200 The cost of the hotel this year is 8% more expensive than last year. The cost of flights this year is $961 Work out the percentage increase in the total cost of the holiday. ..............................................% [3] 13 Solve this equation. 5(c + 32) = 60 c = ........................................... [2] © UCLES 2018 M/S9/02 9 14 Hassan produces apple juice using apples grown on his farm. He has 180 apple trees. Each tree produces 40 kilograms of apples per year. For Teacher’s Use To make 1 litre of apple juice, Hassan needs 2.5 kilograms of apples. He sells his apple juice in 0.75 litre bottles. Work out how many bottles of apple juice Hassan can expect to produce in one year. ..................................... bottles [3] 15 (a) Calculate. 59.5 37.4 59.5 37.4 Write down all the digits on your calculator display. .................................................. [1] (b) Round your answer to 2 significant figures. .................................................. [1] © UCLES 2018 M/S9/02 [Turn over 10 16 A container for water is in the shape of a cuboid. For Teacher’s Use NOT TO SCALE 25 cm 12 cm 12 cm Calculate the capacity of the container, in litres. ........................................ litres [2] 17 The average speed for three of the journeys described below is the same. Journey A: 180 km in 3 hours Journey B: 140 km in 2.5 hours Journey C: 30 km in 0.5 hours Journey D: 10 km in 10 minutes Draw a ring around the journey that has a different average speed from the others. [1] © UCLES 2018 M/S9/02 11 18 The diagram shows a cube drawn on isometric paper. For Teacher’s Use Eight of these cubes are put together to make a larger cube. Draw this larger cube on the isometric paper. [1] © UCLES 2018 M/S9/02 [Turn over 12 19 Make t the subject of this formula. For Teacher’s Use r 7(t + 3) t = ............................................ [2] 20 Nine students take a history exam and a geography exam. Their marks out of 100 are: History: Geography: 46, 65, 45, 42, 71, 48, 50, 71, 51 43, 72, 50, 68, 77, 64, 74, 78, 50 (a) Complete the back to back stem-and-leaf diagram. History 8 6 5 1 1 Geography 2 0 5 1 4 5 6 7 3 Key: 2 | 4 | 3 = 42 in history and 43 in geography [2] (b) Use the shapes of the distributions to compare the marks for history and geography. .................................................................................................................................. ............................................................................................................................. [1] © UCLES 2018 M/S9/02 13 21 Manjit thinks of a factor of 24 Gabriella thinks of a multiple of 13 The square of Manjit’s number is 3 less than Gabriella’s number. For Teacher’s Use Work out the numbers that Manjit and Gabriella thought of. Manjit’s number = ........................ Gabriella’s number = ........................ [2] 22 There are two different pairs of trainers in a sale, Alpha trainers and Bargain trainers. Alpha trainers Original price: $50 Sale price: $44 Bargain trainers Original price: $30 Sale price: $24 Rajiv says, ‘The discount on the Bargain trainers is better.’ Explain why Rajiv is correct. ......................................................................................................................................... ......................................................................................................................................... .................................................................................................................................... [1] © UCLES 2018 M/S9/02 [Turn over 14 23 The graph shows the number of students gaining the top grade in a mathematics exam each year. For Teacher’s Use 60 50 40 Number of 30 students 20 10 0 2006 2007 2008 2009 2010 2011 2012 Year Between 2011 and 2012 there was a 50% increase in the number of students gaining the top grade. Show this on the graph. [2] Copyright © UCLES, 2018 Cambridge Assessment International Education is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of the University of Cambridge Local Examinations Syndicate (UCLES), which itself is a department of the University of Cambridge. 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. © UCLES 2018 M/S9/02 Cambridge Lower Secondary Progression Test * 1 6 4 9 2 3 5 5 5 7 * Mathematics paper 3 learner answer sheet Stage 9 approx. 15 minutes Name ………………………………………………….………………………. No additional materials are allowed. READ THESE INSTRUCTIONS FIRST Answer all questions in the spaces provided. Calculators are not allowed. Each question is worth 1 mark. The total number of marks is 20. MATHS_S9_03_AS_6RP © UCLES 2018 For Teacher’s Use Total 2 Time: 5 seconds Time: 10 seconds 1 6 Square Triangle Hexagon Pentagon 3, 4, 6, 9, 13, … 2 A 7 B 3 x → ................... x→x+3 Asia 8 122 Europe Africa 49 29 Total 200 4 9 5 10 11 © UCLES 2018 x = ...................... M/S9/03 1 p t2 2 3 Time: 15 seconds y 4 3 2 1 12 cement : sand 1:5 15 ...................... m3 –2 –1 0 –1 –2 1 2 3 x NOT TO SCALE v 16 y = ........ x − 1 ......................° 240 13 17 ...................... ° 12 adults 48 children 2x 1 8 NOT TO SCALE 14 0 5 10 10 cm 6 cm 18 360 cm3 1800 cm3 180 cm3 3600 cm3 46 45 48 19 20 © UCLES 2018 M/S9/03 ...................... cm3 1.25 m3 4 BLANK PAGE Copyright © UCLES, 2018 Cambridge Assessment International Education is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of the University of Cambridge Local Examinations Syndicate (UCLES), which itself is a department of the University of Cambridge. 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. © UCLES 2018 M/S9/03 Cambridge Lower Secondary Progression Test * 3 5 7 7 2 8 7 7 6 5 * Mathematics paper 3 teacher instructions Stage 9 approx. 15 minutes READ THESE INSTRUCTIONS FIRST 1. Learners should only have pens and answer sheet. They are not allowed to have any other mathematical equipment or paper for working out. 2. The teacher will need a watch or clock that tells the time accurately in seconds. 3. The teacher should read each question twice slowly and then wait the correct number of seconds (5 seconds for questions 1–5, 10 seconds for questions 6–14 and 15 seconds for questions 15–20) before moving on to the next question. 4. Learners are not allowed to ask questions during the test. MATHS_S9_03_TI_5RP © UCLES 2018 2 Read the text in italics to the learners: Listen carefully to these instructions. You will not have the opportunity to ask questions during the test. You will be asked 20 questions. On your sheet there is an answer box for each question. You should work out your answers in your head. Do not try to write down your calculations because this will take up too much time. For some of the questions, important information is already written down for you on the sheet. Each question will be read aloud twice. You will then have time to work out your answer. If you don’t know the answer to the question, leave it and wait for the next question. If you want to change your answer, put a cross through your first answer and write your new answer nearby. For the first group of questions you will have 5 seconds to work out each answer. For the second group of questions you will have 10 seconds to work out each answer. For the third group of questions you will have 15 seconds to work out each answer. Each question is worth one mark. Do you have any questions about the test? (Answer any questions the learners may have.) Write your name on the front of the answer sheet. (Begin the test.) Now we are ready to start the test. For this first group of questions, you will have 5 seconds to work out each answer and write it down. 1 Find fifteen percent of sixty. 2 Look at your answer sheet. Draw a ring around the name of the regular polygon that does not tessellate. 3 Write down the inverse of the function x maps to x plus three. 4 Look at the scatter graph on your answer sheet. Write down the type of correlation shown. 5 Work out seven subtract negative fifteen. © UCLES 2018 M/S9/03 3 For this group of questions, you will have 10 seconds to work out each answer and write it down. 6 Find the next term of the sequence on your answer sheet. 7 Look at your answer sheet. Triangle A is enlarged to triangle B. Draw a ring around the cross which is the correct centre of enlargement. 8 Look at the table on your answer sheet. It shows the destinations of two hundred flights from an airport in one day. Find the relative frequency of a flight to Asia. 9 Aiko drives x kilometres to work. Blessy drives twice as far as Aiko. In total they drive sixty kilometres to work. Find the value of x. 10 Divide one half by one third. 11 Look at the formula on your answer sheet. Find the value of p when t equals negative six. 12 Look at the graph on your answer sheet. Complete the equation of this straight line. 13 Look at the calculation on your answer sheet. Use this to find seventy-six point eight divided by twenty-four. 14 Look at the inequality on your answer sheet. Represent the solution for x on the number line. © UCLES 2018 M/S9/03 [Turn over 4 For this group of questions, you will have 15 seconds to work out each answer and write it down. 15 A builder makes a concrete mix using cement and sand in the ratio one to five. He needs to make two point four cubic metres of concrete mix. How many cubic metres of cement are needed? 16 Look at the diagram on your answer sheet. It shows a regular hexagon and a square. Find angle v. 17 Mike draws a pie chart to show the proportion of adults and children at a party. There are twelve adults and forty-eight children. Work out the size of the angle for the adults’ sector. 18 Look at the cylinder on your answer sheet. It has a radius of ten centimetres and a height of six centimetres. Draw a ring around the best estimate for the volume of the cylinder. 19 Look at your answer sheet. Calculate this value. 20 A tank has a volume of one point two five metres cubed. Work out this volume in centimetres cubed. Now put down your pen. The test is finished. Copyright © UCLES, 2018 Cambridge Assessment International Education is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of the University of Cambridge Local Examinations Syndicate (UCLES), which itself is a department of the University of Cambridge. 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. © UCLES 2018 M/S9/03 Cambridge Lower Secondary Progression Test Mathematics mark scheme Stage 9 MATHS_S9_01_MS_8RP © UCLES 2018 2 General guidance on marking Difference in printing It is suggested that schools check their printed copies for differences in printing that may affect the answers to the questions, for example in measurement questions. Brackets in mark scheme When brackets appear in the mark scheme this indicates extra information that is not required but may be given. For example: Question 1 Part Mark 1 Total Answer Further Information 19.7 or 19.6(58…) 1 This means that 19.6 is an acceptable truncated answer even though it is not the correct rounded answer. The … means you can ignore any numbers that follow this; you do not need to check them. Accept • any correct rounding of the numbers in the brackets, e.g. 19.66, • truncations beyond the brackets, e.g. 19.65 Do not accept • 19.68 (since the numbers in brackets do not have to be present but if they are they should be correct). © UCLES 2018 M/S9/MS 3 These tables give general guidelines on marking learner responses that aren’t specifically mentioned in the mark scheme. Any guidance specifically given in the mark scheme supersedes this guidance. Number and place value The table shows various general rules in terms of acceptable decimal answers. Accept Accept omission of leading zero if answer is clearly shown, e.g. .675 Accept tailing zeros, unless the question has asked for a specific number of decimal places or significant figures, e.g. 0.7000 Accept a comma as a decimal point if that is the convention that you have taught the learners, e.g. 0,638 Units For questions involving quantities, e.g. length, mass, money, duration or time, correct units must be given in the answer. Units are provided on the answer line unless finding the units is part of what is being assessed. The table shows acceptable and unacceptable versions of the answer 1.85 m. Accept Do not accept If the unit is given on the answer line, e.g. ............................ m Correct conversions, provided the unit is stated unambiguously, e.g. ......185 cm...... m (this is unambiguous since the unit cm comes straight after the answer, voiding the m which is now not next to the answer) ......185...... m ......1850...... m etc. If the question states the unit that the answer should be given in, e.g. ‘Give your answer in metres’ 1.85 1 m 85 cm 185; 1850 Any conversions to other units, e.g. 185 cm © UCLES 2018 M/S9/MS [Turn over 4 Money In addition to the rules for units, the table below gives guidance for answers involving money. The table shows acceptable and unacceptable versions of the answer $0.30. Accept Do not accept If the amount is in dollars and cents, the answer should be given to two decimal places. $0.30 $0.3 For an integer number of dollars it is acceptable not to give any decimal places, e.g. $9 or $9.00 $09 or $09.00 If units are not given on the answer line Any unambiguous indication of the correct amount, e.g. 30 cents; 30 c $0.30; $0-30; $0=30; $00:30 30 or 0.30 without a unit $30; 0.30 cents Ambiguous answers, e.g. $30 cents; $0.30 c; $0.30 cents (as you do not know which unit applies because there are units either side of the number) If $ is shown on the answer line If cents is shown on the answer line All unambiguous indications, e.g. $......0.30......; $......0-30......; $......0=30......; $......00:30...... $......30...... ......30......cents ......0.30......cents Ambiguous answers, e.g. $......30 cents......; $......0.30 cents...... unless units on the answer line have been deleted, e.g. $......30 cents...... Ambiguous answers, e.g. ......$30 ......cents; ......$0.30 ......cents unless units on the answer line have been deleted, e.g. ......$0.30......cents © UCLES 2018 M/S9/MS 5 Duration In addition to the rules for units, the table below gives guidance for answers involving time durations. The table shows acceptable and unacceptable versions of the answer 2 hours and 30 minutes. Accept Do not accept Any unambiguous indication using any reasonable abbreviations of hours (h, hr, hrs), minutes (m, min, mins) and seconds (s, sec, secs), e.g. 2 hours 30 minutes; 2 h 30 m; 02 h 30 m Incorrect or ambiguous formats, e.g. 2.30; 2.3; 2.30 hours; 2.30 min; 2 h 3; 2.3 h (this is because this indicates 0.3 (i.e. 18 minutes) of an hour rather than 30 minutes) Any correct conversion with appropriate units, e.g. 2.5 hours; 150 mins unless the question specifically asks for time given in hours and minutes 02:30 (as this is a 24-hour clock time, not a time interval) 2.5; 150 Time The table below gives guidance for answers involving time. The table shows acceptable and unacceptable versions of the answer 07:30. Accept Do not accept If the answer is required in 24-hour format Any unambiguous indication of correct answer in numbers, words or a combination of the two, e.g. 07:30 with any separator in place of the colon, e.g. 07 30; 07,30; 07-30; 0730 7:30 7:30 am 7 h 30 m 7:3 730 7.30 pm 073 07.3 If the answer is required in 12-hour format Any unambiguous indication of correct answer in numbers, words or a combination of the two, e.g. 7:30 am with any separator in place of the colon, e.g. 7 30 am; 7.30 am; 7-30 am Absence of am or pm 1930 am 7 h 30 m 7:3 730 7.30 pm 7.30 in the morning Half past seven (o’clock) in the morning Accept am or a.m. © UCLES 2018 M/S9/MS [Turn over 6 Algebra The table shows acceptable and unacceptable versions of the answer 3x – 2. Accept Do not accept x3 – 2; 3 × x – 2 3x + –2 if it is supposed to be in simplest form Case change in letters Changes in letters as long as there is no ambiguity Accept extra brackets when factorising, e.g. 5(x + (3 + y)). Inequalities The table shows acceptable and unacceptable versions of various answers. For the following Accept Do not accept For 6 G x 1 8 [6, 8) 61x18 For x G –2 (–∞,–2] x 1 –2 For x 2 3 (3, ∞) 31x Just ‘3’ written on the answer line, even if x 2 3 appears in the working. Plotting points The table shows acceptable and unacceptable ways to plot points. Accept Do not accept Crosses or dots plotted within ± 1 square of the 2 correct answer A horizontal line and vertical line from the axes meeting at the required point. The graph line passing through a point implies the point even though there is no cross. © UCLES 2018 M/S9/MS 7 Stage 9 Paper 1 Mark scheme Question 1 Part Mark 2 Total 2 Question 2 Part Mark Answer 9.3 −2.1 −18.9 1 Question 3 Part Mark (a) 1 (b) 1 Total 2 Question 4 Part Mark 1 Total © UCLES 2018 Award 1 mark for two correct. Answer 1 Total Further Information 0.6 × 0.6 0.36 0.64 × 0.4 1.6 0.64 ÷ 0.4 0.625 0.4 ÷ 0.64 0.256 Further Information All lines correct for the mark. Answer 7.1 14 7.5 2 3 5 7.9 Further Information 28 8 Answer Further Information Triangular prism 1 M/S9/MS [Turn over 8 Question 5 Part Mark 1 Total 1 Question 6 Part Mark Answer Further Information Answer Further Information (a) 1 6 (b) 1 Any correct description of the relationship, e.g. • Positive correlation. • Heavier cakes take longer to cook. • As the mass increases, the cooking time increases. Do not accept simply ‘positive’. (c) 1 Any correct explanation, e.g. • 80 minutes is too long for a cake that only has a mass of 800 grams. • 80 minutes would be the cooking time for a heavier cake. • Cakes that have a mass of 800g only take about 40 minutes to cook. Accept any indication that the cooking time is too long for the size of the cake. Total 3 Question 7 Part Mark 2 Answer 29 − 5n Do not accept Not many cakes take that long to cook. • Further Information Accept equivalent expressions, e.g. 24 − 5(n − 1) Award 1 mark for −5n seen. Do not award the mark for just 5n. Total © UCLES 2018 2 M/S9/MS 9 Question 8 Part Mark 2 Answer 164.52 Further Information Award 1 mark either for • sight of the digits 16452 in the answer or • a correct method leading to an answer with 2 decimal places with no more than one arithmetic error. e.g. 4 5 7 × 3 6 2 6 4 2 1 3 7 1 0 1 6 3 5 2 so 163.52 Total 2 Question 9 Part Mark Answer (a) 1 1 (b) 1 1 8 Total © UCLES 2018 Further Information Do not accept 1 23 2 M/S9/MS [Turn over 10 Question 10 Part Mark (a) 1 (b) 2 Answer Further Information 15.2 (km) Allow a tolerance of ±0.2 km. Award 2 marks if C is within both sets of tram lines (tram lines should allow for a ±2° tolerance). N N 087° C 083° 57° Award 1 mark if C is within one set of tram lines. 53° A B Total 3 Question 11 Part Mark (a) (b) 1 2 Answer Further Information x –1 0 2 y –1 1 5 Both required for the mark. Award 1 mark for correctly plotting their 3 points. Straight line graph correctly drawn extending at least from x = –1 to x = 2. y 6 5 4 3 2 1 – 4 –3 –2 –1 0 –1 1 2 –2 –3 –4 Total © UCLES 2018 3 M/S9/MS 3 4 5 x 11 Question 12 Part Mark 2 Total 2 Question 13 Part Mark 2 Total 2 Question 14 Part Mark 2 Total © UCLES 2018 Answer 15 9 Award 1 mark for sight of 2 10 90 and or answer of 3 6 or for a correct method allowing one arithmetic error. Answer x 2 − 2x − 15 Further Information Award 1 mark for at least three of these four terms seen or implied: x 2, −5x, 3x, −15 or for two correct out of x 2, −2x and −15 in final answer. Answer 135 Further Information (cm3) Further Information Award 1 mark for sight of a fully correct method for the area of the trapezium, e.g. • 2 × 3 + 0.5 × 2 × 3 • 0.5 × (2 + 4) × 3 • 3 × 4 − 0.5 × 2 × 3 implied by 9 × 15 seen or for sight of their area × 15. 2 M/S9/MS [Turn over 12 Question 15 Part Mark Answer 2 True 400 × 104 = 400 000 0.3 ÷ 10−2 = 0.003 Question 16 Part Mark 2 Answer 30 Award 1 mark if 3 ticks are correctly placed. 0.8 × 103 = 0.8 ÷ 10−3 2 False 10−1 = 0.1 Total Further Information (cm2) Further Information 10 or Award 1 mark for 2 equivalent or for an attempt at an algebraic solution, e.g, • 12 + 2 x or similar, which may be part of an equation • 2y = 2 x + 10. Total 2 Question 17 Part Mark Answer Further Information (a) 1 Any correct explanation, e.g. • The probabilities do not add to make 1. • 0.35 + 0.25 + 0.3 = 0.9, not 1. • The total of the probabilities is 0.1 too small. 0.35 + 0.25 + 0.3 = 0.9 on its own is not sufficient for the mark. (b) 1 0.05 or equivalent Total 2 © UCLES 2018 M/S9/MS 13 Question 18 Part Mark 1 Answer Further Information 2a or any equivalent fraction, e.g. 4a 5 10 ’ 10a 25 Total 1 Question 19 Part Mark 2 Total 2 Question 20 Part Mark 3 Answer 39 304 Award 1 mark for an attempt to work out 4913 × 2 × 2 × 2. Answer © UCLES 2018 Further Information Correct algebraic method seen leading to (x =) 2 (y =) −1 Do not accept trial and improvement as a method here. Correct methods include: rearranging one of the equations to make one variable the subject and then substituting into the other equation, • making the coefficients of x or y equal followed by addition/subtraction of the equations. Award 2 marks for an algebraic method leading to either x = 2 or y = −1. • Total Further Information Award 1 mark for 2 and −1 with no/incorrect working or for eliminating either x or y, allowing one arithmetic error, e.g. • rearrange one of the equations to make one variable the subject and then substituting into the other equation, • making the coefficients of x or y equal, followed by addition/subtraction of the equations. 3 M/S9/MS [Turn over 14 Question 21 Part Mark 2 Total 2 Question 22 Part Mark 3 Answer ($) 9.60 Further Information Award 1 mark for 2.40 × 4 or 2.40 ÷ 0.25. Answer (a =) 2 Further Information Award 2 marks for a2 + 92 = 62 + 72. This may be implied by (a2) = 62 + 72 − 92 (= 4). Award 1 mark for 62 + 72 (= 85) or a2 + 92 seen. Total © UCLES 2018 3 M/S9/MS 15 Stage 9 Paper 2 Mark scheme Question 1 Part Mark 2 Total 2 Question 2 Part Mark Answer ($)87.12 (a) 1 6(3a − 2) (b) 1 c(2c + 5) Total 2 Question 3 Part Mark (a) 1 36 (b) 1 144 Total 2 Question 4 Part Mark 1 Total 1 Question 5 Part Mark Further Information Award 1 mark for a valid method, e.g. 48.40 ÷ 20 × 36 or 2.42 seen or 1.8 seen. Answer Further Information Answer Further Information Accept 180 – their (a). Answer Further Information A minimum of four intervals in the range 100–200(cm) without gaps or overlaps Answer Further Information Both correct for 1 mark. 1 False True True Total © UCLES 2018 Ignore additional intervals outside of this range. Condone unequal intervals. False 1 M/S9/MS [Turn over 16 Question 6 Part Mark Answer (a) 1 n3 (b) 1 n Total 2 Question 7 Part Mark Accept n1 (a) 1 (12, 5) (b) 1 (5, 1) Total 2 Question 8 Part Mark 1 Total 1 Question 9 Part Mark 2 Further Information Answer Further Information Answer Further Information Answer Further Information 12.4(…) (km / l) 1 2 2 4 4 6 6 3 6 12 18 Rows and columns can be transposed. The numbers 1, 3, 5 can be in any order. The numbers 2, 4, 6 can be in any order. 5 10 20 30 Award 1 mark for row and column labels correct. Total © UCLES 2018 2 M/S9/MS 17 Question 10 Part Mark Answer (a) 1 Sales are expected to increase as the price goes down. Accept equivalents, e.g. • Less sales as the price goes up. • As one goes down the other goes up. (b) 2 4 (thousand) Condone 4000. Further Information Award 1 mark for sight of 7 (thousand) or 3 (thousand). This can be implied by the correct lines drawn on the graph. Total 3 Question 11 Part Mark 3 Answer A complete trial and improvement method leading to the answer x = 3.4. This consists of at least one correct trial of 3.4 or lower and a correct 2 decimal place trial to confirm the first decimal place. Further Information Award 1 mark for any trial of a number between 3 and 4 correctly evaluated. Award 1 mark for a trial of x correctly evaluated where 3.35 G x G 3.38. Award 1 mark for 3.4 in the answer space. x 3.1 3.2 3.3 3.35 3.36 3.37 3.38 3.39 3.4 3.5 3.6 3.7 3.8 3.9 Total © UCLES 2018 x2 + 4x (Accept rounded or truncated answers) 22.01 23.04 24.09 24.6225 24.7296 24.8369 24.9444 25.0521 25.16 26.25 27.36 28.49 29.64 30.81 3 M/S9/MS [Turn over 18 Question 12 Part Mark 3 Answer 7.5 (%) Further Information Award 2 marks for a correct method for finding the fractional or percentage increase, i.e. 0.08 ×1300 + (961 – 900) 2200 (= 0.075) or 1.08 ×1300 + 961 2200 (= 1.075) or 2365 2200 Award 1 mark for sight of any of these: • 0.08 × 1300 (=$104) oe • 1.08 × 1300 (=$1404) oe • ($)165 (increase over year) • ($)2365 (total for this year). Total 3 Question 13 Part Mark 2 Total © UCLES 2018 Answer (c =) −20 Further Information Award 1 mark for 5c + 160 = 60 or c + 32 = 12. 2 M/S9/MS 19 Question 14 Part Mark 3 Answer 3840 (bottles) Further Information Method 1 (Calculating the total number of litres produced). Award 2 marks for sight of 2880 (litres) or 180 × 40 2.5 or 7200 2.5 Award 1 mark for sight of 180 × 40 (= 7200) or 40 (=16) 2.5 Method 2 (Calculating the number of bottles produced per tree). Award 2 marks for sight of 21.33… (bottles per tree) or 40 ÷ 0.75 (= 21.33 ...) 2.5 Award 1 mark for 40 (= 16) 2.5 Total © UCLES 2018 3 M/S9/MS [Turn over 20 Question 15 Part Mark Answer Further Information (a) 1 4.384615..…. Award the mark if these digits are seen. (b) 1 4.4 Allow follow through from an incorrect answer in (a) as long as their (a) has 3 or more digits. Total 2 Question 16 Part Mark 2 Total 2 Question 17 Part Mark Answer 3.6 (litres) Award 1 mark for 3600 or for correct conversion to litres of an incorrect volume in cm3. Answer 1 Journey A: 180 km in 3 hours Journey C: 30 km in 0.5 hours Total © UCLES 2018 Further Information Journey B: 140 km in 2.5 hours Journey D: 10 km in 10 minutes 1 M/S9/MS Further Information 21 Question 18 Part Mark 1 Answer A correct representation, i.e. Further Information Accept a drawing with some visible edges of the individual cubes shown, e.g. or Accept a drawing with hidden edges shown if hidden edges are dashed. Total 1 Question 19 Part Mark 2 Answer (t =) r – 21 r – 3 or (t =) 7 7 Further Information Accept equivalent expressions, e.g. r÷7−3 (r − 21) ÷ 7 Do not accept r − 21 ÷ 7 Award 1 mark for a correct first step, i.e. r =t +3 7 r = 7t + 21 Total © UCLES 2018 2 M/S9/MS [Turn over 22 Question 20 Part Mark (a) Answer 2 History 8 6 5 1 1 (b) 1 Total 3 Question 21 Part Mark 2 2 0 5 1 Further Information Award 1 mark if there is one omission in the 9 leaves or if there are 9 unordered, but otherwise correct, leaves. Geography 4 5 6 7 3 0 4 2 0 8 4 7 8 A correct comparison, e.g. • There are more higher geography marks than history marks. • History has more marks in the 40s than geography. • Geography has more marks in the 70s than history. Do not accept just a description of one subject, e.g. history had lots of marks in the 40s. Answer Further Information (Manjit’s number =) 6 (Gabriella’s number =) 39 Total 2 Question 22 Part Mark Answer 1 Any correct explanation that indicates that the original price of the trainers needs to be taken into account, e.g. There is a higher percentage/fractional discount on bargain trainers. There is a 12% discount on the Alpha trainers compared to a 20% discount on the Bargain trainers. 6 6 is less than (or equivalent). 50 30 Total © UCLES 2018 1 M/S9/MS Do not accept references to averages alone. Award 1 mark for one number correct or if a factor of 24 (other than 24) and a multiple of 13 (other than 13) are seen. Further Information Do not accept, e.g. • Bargain trainers are cheaper. • Alpha trainers are more expensive. 23 Question 23 Part Mark 2 Answer Further Information 50 Award 1 mark if the value 42 is seen (28 + 14) or implied by the graph. or Award 1 mark for correct method. 40 x+ The point should be plotted at (2012, 42). 60 x with x misread from 2 the graph. 30 20 10 0 2006 2007 2008 2009 2010 2011 2012 Total © UCLES 2018 2 M/S9/MS [Turn over 24 Stage 9 Paper 3 Mark scheme Question Mark 1 1 2 1 Answer Further information 9 Square Triangle Hexagon 3 1 x→x−3 4 1 Negative 5 1 22 6 1 18 7 1 Pentagon Ignore comments about strength. Answer may be written next to 13. A B 8 1 122 61 or or 61% or 0.61 200 100 9 1 20 (km) 10 1 3 1 or 1 or 1.5 2 2 11 1 18 12 1 2 13 1 3.2 14 1 Accept any equivalent fractions. Do not accept solid circle. 0 5 15 1 0.4 (m3) 16 1 150(°) 17 1 72(°) 18 1 360 cm3 1800 cm3 180 cm3 3600 cm3 19 1 64 20 1 1 250 000 (cm3) 10 Do not accept 43. Copyright © UCLES, 2018 Cambridge Assessment International Education is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of the University of Cambridge Local Examinations Syndicate (UCLES), which itself is a department of the University of Cambridge. 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. © UCLES 2018 M/S9/MS Cambridge Secondary 1 Progression Test Question paper 55 minutes *9490275461* Mathematics Paper 1 For Teacher’s Use Page Stage 9 1 2 Name ………………………………………………….………………………. Additional materials: Ruler Tracing paper Geometrical instruments READ THESE INSTRUCTIONS FIRST 3 4 5 6 Answer all questions in the spaces provided on the question paper. 7 Calculators are not allowed. 8 You should show all your working on the question paper. 9 The number of marks is given in brackets [ ] at the end of each question or part question. 10 The total number of marks for this paper is 45. 11 12 Total DC (CW/SW) 93957/5RP © UCLES 2014 Mark 2 1 Work out the third term of the sequence with nth term 3(n + 2). For Teacher’s Use .................................................. [1] 2 Work out the size of an exterior angle of a regular pentagon. NOT TO SCALE ................................................° [1] 3 The table shows the age and value of seven cars. Age of car (years) 2 1 9 7 10 5 8 Value ($) 4500 5000 1200 2900 500 2700 2200 (a) Complete the scatter graph. 5000 4000 Value ($) 3000 2000 1000 0 0 1 2 3 4 5 6 7 8 9 10 Age of car (years) [2] (b) Write down the type of correlation shown on the scatter graph. .................................................. [1] © UCLES 2014 M/S9/01 3 4 For Teacher’s Use Tick (9) to show whether each of these statements is true or false. Do not do any calculations. The first one has been done for you. True The answer to 20.1 × 1.53 is larger than 20.1 False 9 The answer to 17.4 × 0.82 is larger than 17.4 The answer to 23.8 ÷ 0.74 is smaller than 23.8 [1] 5 (a) A cuboid measures 5 cm by 4 cm by 3 cm. Draw the cuboid on the isometric grid. = 1 cm [1] (b) Write down the number of planes of reflectional symmetry of the cuboid. .................................................. [1] © UCLES 2014 M/S9/01 [Turn over 4 6 Put a ring around the value that is closest to 3 70 3.2 4.1 5.6 For Teacher’s Use 8.4 23.3 [1] 7 Here is a pattern. 5 3 15 The rule is to multiply the values in the top two circles to make the value in the bottom circle. Complete these patterns using the same rule. (a) –8 – 0.5 [1] (b) 8p4 24p12 [2] © UCLES 2014 M/S9/01 5 8 Factorise fully. For Teacher’s Use (a) 2a2 + 5a .................................................. [1] (b) 6 – 18x + 24y .................................................. [1] 9 Draw lines to join each calculation to the correct answer. One has been done for you. 0.5 + 1.5 × 3 18 3 × (2 + 4) 5 8–1×2 14 10 + 23 – 4 40 (22 + 1) × 8 6 [2] © UCLES 2014 M/S9/01 [Turn over 6 10 Work out 2 1 + 1 3 6 5 For Teacher’s Use .................................................. [2] 11 Quadrilaterals A and B are drawn on the grid. y 7 6 B 5 4 3 2 1 –1 0 –1 1 2 3 4 5 6 7 x A –2 –3 Describe fully the single transformation that maps A onto B. ......................................................................................................................................... .................................................................................................................................... [2] © UCLES 2014 M/S9/01 7 12 Work out 70 For Teacher’s Use .................................................. [1] 13 (a) Work out 24.73 ÷ 0.001 .................................................. [1] (b) Give your answer to part (a) to 2 significant figures. .................................................. [1] 14 Here is a circle with centre C. C Construct an inscribed regular hexagon. Use only a pair of compasses and a ruler. Do not rub out your construction lines. © UCLES 2014 [2] M/S9/01 [Turn over 8 For Teacher’s Use 20 15 Put a ring around the fraction that is not equivalent to 24 10 12 35 42 14 18 50 60 [1] 16 Expand and simplify. (x + 5)(x + 3) .................................................. [2] 17 Put a ring around the correct calculation. 98 ÷ 98 = 9 7 × 73 = 74 68 ÷ 62 = 64 23 × 24 = 47 [1] 18 Bushra writes 480 ÷ 0.4 = 48 ÷ 4 Is Bushra correct? Tick (9) a box. Yes No Explain your answer. ......................................................................................................................................... .................................................................................................................................... [1] © UCLES 2014 M/S9/01 9 19 Ibrahim has some building blocks that are all cubes of the same size. He uses three of the blocks to make a pile with a height of 43.5 cm. Then he makes a row with five of the blocks with no gaps. For Teacher’s Use NOT TO SCALE 43.5 cm ? (a) Work out the length of the row of five blocks. ........................................... cm [2] (b) Ibrahim only has red, yellow and green building blocks. Ibrahim takes a block at random without looking. Complete the table. Number of blocks Red Yellow 10 10 Green 3 5 Probability [2] © UCLES 2014 M/S9/01 [Turn over 10 20 The diagram shows the position of two schools, M and P. The scale used in the diagram is 1 cm is equal to 1 km. For Teacher’s Use Scale 1 cm = 1 km North North P M (a) What is the bearing of school P from school M ? ................................................° [1] (b) School Q is on a bearing of 120° from school P. School Q is 4 km away from school P. Put a cross (8) on the diagram to show the position of school Q. Label it Q. [1] (c) Cheng lives exactly 3 km away from school M. Draw on the diagram the locus of points showing where Cheng lives. [1] © UCLES 2014 M/S9/01 11 21 Solve the simultaneous equations. For Teacher’s Use 7x + y = 50 4x + y = 23 Show your working. x = ................................................. y = ............................................ [2] 22 Here is a boat’s sail in the shape of a right angled triangle. 12 m NOT TO SCALE 15 m Work out the total distance around the outside of the sail. ............................................. m [2] © UCLES 2014 M/S9/01 [Turn over 12 23 The back to back stem-and-leaf diagram shows the scores for two different teams in their last 25 basketball matches. Team X For Teacher’s Use Team Y 8 5 0 1 1 2 3 6 9 9 9 4 1 6 1 3 5 5 6 8 9 9 9 9 8 7 5 4 7 1 1 4 7 9 8 8 8 6 5 1 0 0 8 2 3 8 7 5 3 2 9 4 0 0 10 7 Key: 8 | 5 | 0 is a score of 58 for Team X and 50 for Team Y Tick (9) a box to show which team generally had higher scores. Team X Team Y Explain your answer. ......................................................................................................................................... .................................................................................................................................... [1] 24 Work out 1 7 ÷ 1 1 8 4 Give your answer as a mixed number in its simplest form. .................................................. [3] 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. Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge. © UCLES 2014 M/S9/01 Cambridge Secondary 1 Progression Test Question paper 55 minutes *4295752272* Mathematics Paper 2 For Teacher’s Use Page Stage 9 1 2 3 Name ………………………………………………….………………………. 4 5 Additional materials: Ruler Calculator Tracing paper Geometrical instruments READ THESE INSTRUCTIONS FIRST Answer all questions in the spaces provided on the question paper. 6 7 8 9 10 You should show all your working on the question paper. The number of marks is given in brackets [ ] at the end of each question or part question. The total number of marks for this paper is 45. 11 12 13 14 15 16 Total DC (NH/SW) 93956/8RP © UCLES 2014 Mark 2 1 A microwave oven normally costs $160 For Teacher’s Use In a sale there is a discount of 15%. Work out the sale price of the microwave oven. $ ............................................... [1] 2 Jamil is conducting a survey to find out how much time students in his school spend doing homework. He is going to ask the first 10 students on the register in his maths class. This may not produce a good sample for Jamil’s survey. Give two reasons why. Reason 1 ......................................................................................................................... ......................................................................................................................................... Reason 2 ......................................................................................................................... .................................................................................................................................... [2] 3 Work out 38 – 7 2+5 Give your answer to 2 decimal places. .................................................. [2] © UCLES 2014 M/S9/02 3 4 Two shapes A and B fit together to make a parallelogram. For Teacher’s Use 57° 68° NOT TO SCALE B 157° A 146° 112° Work out the sizes of the four angles in shape A. Write them in the correct places on the diagram. [2] 5 One solution to x2 + 3x = 17 is between 2 and 3 Use trial and improvement to find this solution. Give your answer to 1 decimal place. You must record your trials in the table. x x2 + 3x Bigger or smaller than 17 2 3 22 + 3 × 2 = 10 32 + 3 × 3 = 18 smaller bigger x = ............................................ [2] © UCLES 2014 M/S9/02 [Turn over 4 6 Ludwik is an engineer. He charges a fixed call out fee plus an hourly rate for each job. For Teacher’s Use The table shows how much Ludwik charges for three jobs that last different amounts of time. Amount of time (hours) 1 4 6 Charge ($) 50 140 200 (a) Draw the straight line graph that shows this information. 200 180 160 140 120 Charge 100 ($) 80 60 40 20 0 0 1 2 3 4 Amount of time (hours) 5 6 7 [1] (b) Write down Ludwik’s fixed call out fee. This is the cost before he has worked any hours. $ ............................................... [1] (c) Work out Ludwik’s hourly rate. $ ............................................... [1] © UCLES 2014 M/S9/02 5 7 Surinder thinks that regular octagons will tessellate. For Teacher’s Use 135° Is Surinder correct? Tick (3) a box. Yes No Explain your answer. ......................................................................................................................................... .................................................................................................................................... [1] 8 Draw lines to join each inequality to the correct solution set. Inquality Solution set –5 –4 –3 –2 –1 0 1 2 3 4 5 –5 –4 –3 –2 –1 0 1 2 3 4 5 –5 –4 –3 –2 –1 0 1 2 3 4 5 –5 –4 –3 –2 –1 0 1 2 3 4 5 [1] © UCLES 2014 M/S9/02 [Turn over 6 9 Here is quadrilateral P. For Teacher’s Use y 7 6 5 4 3 P 2 1 –6 –5 –4 –3 –2 0 –1 1 2 3 4 5 6 7 8 9 10 x –1 –2 –3 Draw an enlargement of quadrilateral P with scale factor 3 and centre of enlargement (3, 2). [2] 10 Write as a single fraction. 2 3 + x x .................................................. [1] © UCLES 2014 M/S9/02 7 11 Here is a right angled triangular prism. For Teacher’s Use 4.5 cm NOT TO SCALE 6 cm 5.2 cm Put a ring around the correct working for the volume of this prism. 1 (4.5 + 5.2) × 6 2 4.5 × 5.2 × 6 4.5 × 5.2 × 6 ÷ 2 1 × 4.5 × 5.2 × 6 3 [1] 12 Work out the value of 5x2 when x = –3.4 .................................................. [1] 13 Here is a semi-circle with radius 5.5 cm. NOT TO SCALE 5.5 cm Work out the perimeter of this semi-circle. ............................................ cm [2] © UCLES 2014 M/S9/02 [Turn over 8 14 The table shows some functions and their inverses. For Teacher’s Use Complete the table. The first row has been done for you. Mapping Function ×4 ×2 m –3 m ÷4 4m 2m – 3 Inverse function Reverse mapping ........... m ........... m m 4 ............... [2] 15 Tick (9) whether each set of data is primary or secondary. Primary Secondary Adam collects data about heights by measuring students in his class. Bob collects data about cricket scores using the internet on his computer. Carol collects data about masses of animals from a book. [1] © UCLES 2014 M/S9/02 9 16 The table shows the population of Thailand for 1968 and 2013. Year Population 1968 34.50 million 2013 66.93 million For Teacher’s Use What is the percentage increase in the population of Thailand from 1968 to 2013? ..............................................% [2] 17 In a box the ratio of green to black pens is 5 : 8 Imre takes 20 black pens out of the box. Now the ratio of green to black pens is 5 : 6 green : black 5:8 green : black 5:6 Take 20 black pens out Work out the number of green pens in the box. .................................................. [2] © UCLES 2014 M/S9/02 [Turn over 10 18 Make x the subject of this formula. For Teacher’s Use y = 5(t + x) x = ........................................... [2] 19 Put these numbers in order, from smallest to largest. 1 .................... smallest 0.3 .................... 1 3 .................... 9 20 5% .................... .................... largest [2] 20 Lucas, Gabriela and Ingrid are solving the equation 4(n + 3) = 8n – 8 They each start the solution in different ways. Tick (9) whether their statements are true or false. The first one is done for you. True False Lucas so 4(n + 3) = 8n – 8 4n + 4 = 8n 9 Gabriela so 4(n + 3) = 8n – 8 n + 3 = 2n – 2 so 4(n + 3) = 8n – 8 12 = 4n – 8 Ingrid [1] © UCLES 2014 M/S9/02 11 21 Mr Green spins two fair spinners. Some of the possible outcomes are recorded in this table. For Teacher’s Use Spinner 2 1 3 7, 5 Spinner 1 4 4, 1 7, 9 4, 5 2, 3 2, 2 Complete the diagrams of the spinners by filling in the missing values. ............. 4 ............. 1 ............. 3 ............. ............. Spinner 1 Spinner 2 [2] © UCLES 2014 M/S9/02 [Turn over 12 22 (a) Complete this table of values for the equation 2y – x = 4 x 0 y 2 0 For Teacher’s Use 6 3 [2] (b) Here is a graph of the line y + x = –1 Draw the graph of 2y – x = 4 on the same axes. y 8 7 6 y + x = –1 5 4 3 2 1 –6 –5 –4 –3 –2 –1 0 1 2 3 4 5 6 7 x –1 –2 –3 –4 [1] © UCLES 2014 M/S9/02 13 (c) Use your graph to write down the solution to the simultaneous equations. For Teacher’s Use y + x = –1 2y – x = 4 x = ............................................ y = ............................................ [1] 23 In a trial, two different light bulbs are being compared. The trial looks at how long the light bulbs last. (a) The relative frequency of a low energy bulb lasting 1001–1500 hours is 0.4 Complete the table. Type of bulb Number of bulbs tested Standard bulb Low energy bulb Hours bulbs lasted 0–1000 hours 1001–1500 hours more than 1500 hours 50 30 20 0 80 36 [1] (b) Tick (9) whether these statements are true or false. True False The probability of a standard bulb lasting 0 – 1000 hours is the same as it lasting 1001–1500 hours. The probability of a low energy bulb lasting 0 – 1000 hours is higher than for a standard bulb. [1] © UCLES 2014 M/S9/02 [Turn over 14 24 The diagram shows a square. The square is divided into four rectangles by two straight lines. The area of the largest rectangle is 48 000 m2. For Teacher’s Use NOT TO SCALE 48 000 m2 C 60 m 200 m (a) Work out the area of the smallest rectangle, C. .............................................m2 [2] (b) Complete this sentence. The area 48 000 m2 is equivalent to .............................. hectares. © UCLES 2014 M/S9/02 [1] 15 25 A plant grows to a height of 8 cm in 1 week. Fatima says, “Plant height and number of weeks are directly proportional. The height of this plant in 2 years will be about 832 cm, because there are 104 weeks in 2 years.” Is Fatima likely to be correct? Tick (9) a box. Yes No Explain your answer. ......................................................................................................................................... .................................................................................................................................... [1] © UCLES 2014 M/S9/02 For Teacher’s Use 16 BLANK PAGE 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. Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge. © UCLES 2014 M/S9/02 Cambridge Secondary 1 Progression Test Mark scheme Mathematics Stage 9 DC (CW/SW) 90762/8RP © UCLES 2014 2 These tables give general guidelines on marking answers that involve number and place value, and units of length, mass, money, duration or time. If the mark scheme does not specify the correct answer, refer to these general guidelines. Number and Place value The table shows various general rules in terms of acceptable decimal answers. Accept Accept omission of leading zero if answer is clearly shown, e.g. .675 Accept tailing zeros, unless the question has asked for a specific number of decimal places, e.g. 0.7000 Always accept appropriate tailing zeros, e.g. 3.00 m; 5.000 kg Accept a comma as a decimal point if that is the convention that you have taught the children, e.g. 0,638 Units For questions involving quantities, e.g. length, mass, money, duration or time, correct units must be given in the answer. The table shows acceptable and unacceptable versions of the answer 1.85 m. Correct answer Also accept Do not accept Units are not given on answer line and the question does not specify a particular unit for the answer 1.85 m Correct conversions provided the unit is stated, e.g. 1 m 85 cm 185 cm 1850 mm 0.00185 km 1.85 If the unit is given on the answer line, e.g. ............................ m ......1.85...... m Correct conversions, provided the unit is stated unambiguously, e.g. ......185 cm...... m ......185...... m ......1850...... m etc. If the question states the unit that the answer should be given in, e.g. ‘Give your answer in metres’ 1.85 m 1.85 1 m 85 cm 185; 1850 © UCLES 2014 185 m Any conversions to other units, e.g. 185 cm M/S9/MS 3 Money For questions involving money, it is essential that appropriate units are given in the answer. The table shows acceptable and unacceptable versions. Accept Do not accept If the amount is in dollars and cents, the answer should be given to two decimal places. $0.30 $9 or $9.00 $09 or $09.00 If units are not given on answer line Any unambiguous indication of the correct amount, e.g. 30 cents; 30 c $0.30; $0.30 c; $0.30 cents $0-30; $0=30; $00:30 30 or 0.30 without a unit $......0.30...... $......0.30 cents...... $......30...... $......30 cents...... (this cannot be accepted because it is ambiguous, but if the dollar sign is deleted it becomes acceptable) If $ is shown on the answer line Accept all unambiguous indications, as shown above If cents is shown on the answer line ......30......cents ......$0.30 ......cents Incorrect or ambiguous answers, e.g. $0.3; $30; $30 cents; 0.30 cents ......0.30......cents ......$30 ......cents Duration Accept any unambiguous method of showing duration and all reasonable abbreviations of hours (h, hr, hrs), minutes (m, min, mins) and seconds (s, sec, secs). Accept Do not accept Any unambiguous indication using any reasonable abbreviations of hours (h, hr, hrs), minutes (m, min, mins) and seconds (s, sec, secs), e.g. 2 hours 30 minutes; 2 h 30 m; 02 h 30 m 5 min 24 sec; 00 h 05 m 24 s Incorrect or ambiguous formats, e.g. Any correct conversion with appropriate units, e.g. 2.5 hours; 150 mins 324 seconds Also accept unambiguous digital stopwatch format, e.g. 02:30:00 00.05:24; 05:24 s © UCLES 2014 2.30; 2.3; 2.30 hours; 2.30 min; 2 h 3; 2.3 h 2.5; 150 324 Do not accept ambiguous indications, e.g. 02:30 5.24 M/S9/MS [Turn over 4 Time There are many ways to write times, in both numbers and words, and marks should be awarded for any unambiguous method. Accept time written in numbers or words unless there is a specific instruction in the question. Some examples are given in the table. Accept Do not accept Any unambiguous indication of correct answer in numbers, words or a combination of the two, e.g. 07:30 Incorrect or ambiguous formats, e.g. 0730; 07 30; 07.30; 07,30; 07-30; 7.30; 730 a.m.; 7.30am; 7.30 in the morning 07.3; 073; 07 3; 730; 73; 7.3; 7.3 am; 7.30 p.m. Half past seven (o’clock) in the morning Thirty minutes past seven am Also accept: O-seven-thirty e.g. 19:00 19; 190; 19 000; 19.00 am; 7.00 am 1900; 19 00; 19_00 etc. Nineteen hundred (hours) Seven o’clock in the afternoon/evening Accept correct conversion to 12-hour clock, e.g. 16:42 4.42 p.m. 4.42 am; 0442; 4.42 Sixteen forty two Four-forty-two in the afternoon/evening Four forty two p.m. Forty two (minutes) past four p.m. Eighteen (minutes) to five in the evening Forty two (minutes) past sixteen Eighteen (minutes) to seventeen Also accept a combination of numbers and words, e.g. 18 minutes to 5 p.m. 42 minutes past 4 in the afternoon © UCLES 2014 M/S9/MS 5 Stage 9 Paper 1 Mark Scheme Question 1 Part Mark 1 Total 1 Question 2 Part Mark 1 Total 1 Question 3 Part Mark (a) Answer Further Information Answer Further Information Answer Further Information 15 72 ( o ) Tolerance ±1 mm horizontally ±$100 vertically 2 5000 4000 Award 1 mark for at least 3 more correctly plotted points all within tolerance. Value ($) 3000 2000 1000 0 0 1 2 3 4 5 6 7 8 9 10 Age of car (years) (b) 1 Total 3 Question 4 Part Mark 1 Total © UCLES 2014 Negative Ignore words describing the strength of the correlation. Accept ‘-ve’ but not ‘-’ Answer 9 Further Information True False True 9 False True 9 False Both are required for the mark. 1 M/S9/MS [Turn over 6 Question 5 Part Mark (a) 1 (b) 1 Total 2 Question 6 Part Mark 1 Total 1 Question 7 Part Mark (a) Answer Further Information Accept in any orientation. Lines should be ruled. Ignore hidden edges drawn. 3 Answer 3.2 4.1 5.6 8.4 Further Information 23.3 Answer Accept any clear indication. Further Information 1 –8 –0.5 (+)4 (b) 2 8p4 Award 1 mark for 3 and 1 mark for p8 so long as expression is of form apb where a and b are non-zero numbers e.g. 3p16 and 16p8 would score 1, 3+p8 would score zero 3p8 24p12 Total © UCLES 2014 3 M/S9/MS 7 Question 8 Part Mark (a) 1 a(2a + 5) (b) 1 6(1 – 3x + 4y) Total 2 Question 9 Part Mark 2 Total 2 Question 10 Part Mark 2 Answer Further Information Answer Further Information 0.5 + 1.5 × 3 18 3 × (2 + 4) 5 8–1×2 14 10 + 23 – 4 40 (22 + 1) × 8 6 Award 1 mark for 2 or 3 correct matches. Answer 3 23 113 30 or equivalents such as 30 Further Information Award 1 mark for correct common denomitor seen (30 or a multiple of 30) and at least one correct numerator, e.g. 2 Total © UCLES 2014 5 18 48 + 1 , 65 + 30 30 30 30 2 M/S9/MS [Turn over 8 Question 11 Part Mark 2 Answer Reflection (in the line) y = 2 Further Information Both reflection and (the line) y = 2 are required for 2 marks. Do not accept this as a drawing on the diagram, it must be a description. Award 1 mark for reflection or y = 2 seen. Total 2 Question 12 Part Mark 1 Total 1 Question 13 Part Mark Further Information Answer Further Information 1 (a) 1 24 730 (b) 1 25 000 Total 2 © UCLES 2014 Answer Follow through from their (a) as long as their (a) has more than 2 significant figures. M/S9/MS 9 Question 14 Part Mark Answer Further Information 2 Award 1 mark for a regular hexagon (tolerance ± 2 mm and ± 2°) or 6 construction arcs (must be arcs). C Total 2 Question 15 Part Mark 1 Total 1 Question 16 Part Mark 2 Answer 10 12 Further Information 14 18 35 42 Answer x2 + 8x + 15 50 60 Further Information Award 1 mark for: x2 + 5x + 3x + 15 or x2 + ax + 15 or x2 + 8x + b (where a and b are numbers not equal to 0) Total © UCLES 2014 2 M/S9/MS [Turn over 10 Question 17 Part Mark 1 Total 1 Question 18 Part Mark 1 Total 1 Question 19 Part Mark (a) 2 (b) 2 Total © UCLES 2014 Answer 98 ÷ 98 = 9 68 ÷ 62 = 64 Further Information 7 × 73 = 74 23 × 24 = 47 Answer Further Information No and, reason, e.g. • Bushra has multiplied 0.4 by 10 but hasn’t multiplied 480 by 10 • It should be 4800 not 48 • The correct answer is 1200 but 48 divided by 4 is 12 Answer Any correct reason with a decision of ‘no’ scores the mark. Further Information 72.5 ( cm ) Award 1 mark for a correct method, e.g. (43.5 ÷ 3) × 5 or for 14.5 seen Red Yellow Green Number of blocks 10 10 30 Probability 1 5 1 5 3 5 4 M/S9/MS Award 1 mark for 30 (Green blocks) correct or both fractions correct. 11 Question 20 Part Mark (a) 1 (b) 1 Answer Further Information 074(°) ± 2°. Do not allow 74, must be three figures. School Q positioned 4 cm from School P at a bearing of 120°. North North P M (c) Q × 1 North M Total 3 Question 21 Part Mark 2 North 2 Question 22 Part Mark 2 Total © UCLES 2014 A circle of radius 3 cm ± 2 mm centred on M. P Answer (x = ) 9 Further Information Award 1 mark for 3x = 27 seen or equivalent correct method or one correct answer. (y = ) –13 Total Condone if not labelled providing there is not a choice of crosses. Award the mark if the point is ± 2mm and ± 2°. Answer 36 (m) Further Information Award 1 mark for use of Pythagoras’ theorem, e.g. 152 – 122 = x2 or use of Pythagorean triples, e.g. 9 seen. 2 M/S9/MS [Turn over 12 Question 23 Part Mark Answer 1 Ticks Team X and gives a suitable reason, e.g. • Team Y have a lower median score • Team X have most of their scores in the 70s and 80s whereas team Y have most of their scores in the 50s and 60s Further Information Any valid comparative comment. Condone • team X have more higher scores (than team Y) • team X has a higher average score Do not allow comments that are not comparative, e.g. • team X has lots of high scores Total © UCLES 2014 1 M/S9/MS 13 Question 24 Part Mark 3 Answer 1 1 Further Information For full marks the final answer must be simplified and must be a mixed number 2 Award 2 marks for: a completely correct method, e.g. converting both fractions to improper fractions followed by an attempt to multiply by the reciprocal of the second e.g. 15 ÷ 5 followed 8 4 by 15 4 × 8 5 or sight of a value equivalent to 1 1 but which is unsimplified 2 or that is left as an improper fraction. Award 1 mark for: 4 15 or sight of either 5 8 or an attempt to multiply their first improper fraction by the reciprocal of their second improper fraction (if there is a mistake in the conversion). Total © UCLES 2014 3 M/S9/MS [Turn over 14 Stage 9 Paper 2 Mark Scheme Question 1 Part Mark 1 Total 1 Question 2 Part Mark 2 Answer Further Information Answer Further Information ($) 136 Any two reasons from two different categories: • sample size too small • bias relating to selecting from just one class (e.g. same subject, same age, same ability level) • this is not random sampling Accept equivalent answers, e.g. • he should ask more people • he should ask people from different classes Note two marks can be scored in one sentence e.g. he should have asked more students and used more classes. Award 1 mark for only one correct reason or two reasons from the same category. Total © UCLES 2014 2 M/S9/MS 15 Question 3 Part Mark 2 Total 2 Question 4 Part Mark Answer Further Information 4.43 Award 1 mark for a correct answer truncated or given to the wrong number of decimal places or for 31 seen. 7 Answer 2 Further Information 57° 68° 55° 157° B A 68° Total © UCLES 2014 146° 203° Degree symbols are not necessary. 112° Award 1 mark for 2 or 3 correct answers. 34° 2 M/S9/MS [Turn over 16 Question 5 Part Mark 2 Answer 2.9 with working The minimum amount of working for 2 marks would be evidence of correctly evaluating x2 + 3x for two values of x between 2.85 and 2.94 that result in answers either side of 17 (likely to be 2.85 and 2.9). Total © UCLES 2014 2 M/S9/MS Further Information Award 1 mark for evaluating two values of x (2 < x < 3) possible values are given below for reference or an answer of 2.9 with no working. x 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.85 2.86 2.87 2.88 2.89 2.9 2.91 2.92 2.93 2.94 x2+ 3x 10.71 11.44 12.19 12.96 13.75 14.56 15.39 16.24 16.6725 16.7596 16.8469 16.9344 17.0221 17.11 17.1981 17.2864 17.3749 17.4636 17 Question 6 Part Mark (a) 1 Answer 200 180 160 140 120 100 80 60 40 20 0 0 Further Information (6, 200) (4, 140) (1, 50) 1 2 3 4 5 6 Line must be ruled for the mark. It is not necessary to see the points plotted provided the line passes through all three points. The line does not need to pass through the point (0, 20). 7 (b) 1 ($) 20 Follow through using the intercept from their single straight line graph as long as their answer is greater than 0. (c) 1 ($) 30 (per hour) Follow through using the gradient from their single straight line graph. Total 3 Question 7 Part Mark Answer 1 No and a correct reason, e.g. • 360° ÷ 135° is not an integer • putting two 135° angles together leaves a remainder of 90° • an octagon needs a square to tessellate with • the only regular shapes that tessellate are triangles, squares and hexagons Total © UCLES 2014 Further Information Do not accept “there will be gaps” without supporting evidence, e.g. a correct calculation or diagram. 1 M/S9/MS [Turn over 18 Question 8 Part Mark Answer 1 Inequality Further Information Both lines must be correct for the mark. Solution set –5 –4 –3 –2 –1 0 1 2 3 4 5 –5 –4 –3 –2 –1 0 1 2 3 4 5 –5 –4 –3 –2 –1 0 1 2 3 4 5 –5 –4 –3 –2 –1 0 1 2 3 4 5 x>3 x≤3 Total 1 Question 9 Part Mark Answer 2 Further Information Award 1 mark for 3 out of the 4 vertices correctly plotted or for a quadrilateral enlarged by a scale factor of 3 but in the wrong place. 5 4 3 P 2 Labels are not required. 1 –3 –2 –1 0 1 2 3 4 5 6 –1 Total 2 Question 10 Part Mark 1 Total © UCLES 2014 Answer 5 x 1 M/S9/MS Further Information 19 Question 11 Part Mark 1 Total 1 Question 12 Part Mark 1 Total 1 Question 13 Part Mark 2 Answer 1 2 (4.5 + 5.2) × 6 4.5 × 5.2 × 6 4.5 × 5.2 × 6 ÷ 2 1 × 4.5 × 5.2 × 6 3 Answer Further Information Accept any clear indication. Further Information 57.8 or equivalent Answer 28.3 (cm) Further Information Award 2 marks for an answer in the range 28.27 to 28.3 Award 1 mark for 2 × é × 5.5 (+11) (2) or é=× 5.5 (+11) Total 2 Question 14 Part Mark Answer 2 ÷2 Total © UCLES 2014 +3 m+3 2 Further Information Award 1 mark for each correct completed cell or their inverse function matching their reverse mapping. Condone any letter in place of the m. 2 M/S9/MS [Turn over 20 Question 15 Part Mark 1 Answer Primary Secondary 9 Further Information All three must be correct for the mark. 9 9 Total 1 Question 16 Part Mark 2 Total 2 Question 17 Part Mark 2 Total 2 Question 18 Part Mark 2 Total © UCLES 2014 Answer 94 (%) Award 1 mark for 66.93 – 34.5 or 0.94 34.5 Answer 50 Further Information Award 1 mark for 20 ÷ 2 seen or implied Answer (x =) Further Information y y – 5t – t or (x =) 5 5 2 M/S9/MS Further Information Award 1 mark for a correct first step that affects both sides of the equation, e.g. y =t+x • 5 • y – 5t = 5x 21 Question 19 Part Mark 2 Answer 5% 0.3 1 3 Further Information 9 20 1 Accept numbers in same form in correct order for 2, e.g. 0.05 0.3 0.33(...) 0.45 1 Award 1 mark for values correctly converted to the same form allowing one error or omission: 1, 0.3, 0.33.., 0.05, 0.45 or 60 18 20 3 27 60 , 60 , 60, 60, 60 (other denominators are possible providing denominators are equal) or 100%, 30%, 33.3..%, 5%, 45% or for values correctly written in reverse order Total 2 Question 20 Part Mark Answer 1 True Total © UCLES 2014 9 Further Information False 9 True False 9 True False Both are required for the mark. 1 M/S9/MS [Turn over 22 Question 21 Part Mark Answer Further Information 2 9 4 7 5 1 3 2 2 Spinner 1 Award 2 marks for all five numbers correct. Numbers can be in any position in the correct spinner. Spinner 2 Award 1 mark for three correct numbers or for a correctly completed sample space diagram: 7 4 2 Total © UCLES 2014 2 M/S9/MS 1 5 3 2 9 7,1 7,5 7,3 7,2 7,9 4,1 4,5 4,3 4,2 4,9 2,1 2,5 2,3 2,2 2,9 23 Question 22 Part Mark (a) 2 (b) Answer x y 1 –4 0 2 6 0 2 3 5 8 7 6 5 4 3 (2, 3) 2 (0, 2) 1 (–4, 0) –6 –5 –4 –3 –2 –1 0 –1 –2 (c) 1 Total 4 Question 23 Part Mark (a) 1 (b) 1 Total © UCLES 2014 Further Information Award 1 mark for 2 correct values in the table. Line needs to extend between at least 3 out of the 4 points and must be ruled for the mark. (6, 5) Follow through their values as long as they are in a straight line. 1 2 3 4 5 6 x = –2 y=1 Both are required for the mark and depend on graph values seen. If incorrect, follow through from any single line intersecting y + x = –1 (must be within the grid). Algebraic solution not evidenced by graph scores zero. Answer Further Information 32 and 12 Both are required for the mark. True 9 False True 9 False Both are required for the mark. 2 M/S9/MS [Turn over 24 Question 24 Part Mark Answer (a) 2 6000 (m2) (b) 1 4.8 (hectares) Total 3 Question 25 Part Mark Answer 1 A decision of no and any correct explanation, e.g. • Height and number of weeks are unlikely to be directly proportional • The plant is unlikely to continue growing at the same rate Further Information Award 1 mark for: finding one of the missing lengths 240, 100 or 300 (may be marked in the correct place on the diagram) or 60 P 100 or 48 000 ÷ 200 or 90 000 (m2) or 24 000 (m2) Further Information Allow 832 cm is an unlikely height in just 2 years. or There is no basis for her initial assertion as she has only one measurement (or words to that effect) Do not accept “yes, because 104 × 8 = 832”. Total © UCLES 2014 1 M/S9/MS 25 Stage 9 Paper 3 Mark Scheme Question Mark 1 ½ 5.1 2 ½ x(3x – 4) or 3x2 – 4x 3 ½ 4 4 ½ 6 5 ½ (Customers are) increasing or going up or rising 6 ½ 11 7 ½ ($) 3.30 8 ½ Angle, centre and direction (of rotation) 9 ½ 3.6 10 ½ 63 (°) and 4 (cm) 11 ½ 6x5 12 ½ 1 10 13 ½ Thursday and Friday (or Thurs and Fri) 14 ½ 2x – 4 or 2(x – 2) 15 ½ 280 (km) 16 ½ 3n – 1 17 ½ 1 or 0.25 4 18 ½ c = 2n or n = c 2 19 ½ 12 20 ½ 3200 (mm3) © UCLES 2014 Answer 10% 0.01 10–1 M/S9/MS 26 BLANK PAGE 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. Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge. © UCLES 2014 M/S9/MS