Example Practice Papers for Cambridge IGCSE Mathematics Extended Practice Book. Example Practice Paper 4 17
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1 Eample Practice Papers for Cambridge IGCSE Mathematics Etended Practice Book Eample Practice Paper Mark scheme for Paper 13 Eample Practice Paper 4 17 Mark scheme for Paper 4 36
2 NAME Cambridge IGCSE Mathematics Etended Practice Book Eample Practice Paper 1 hour 30 minutes PLEASE NOTE: this eample practice paper contains eam-style questions only READ THESE INSTRUCTIONS FIRST Answer all questions. Working for a question should be written below the question. If the answer is not eact but a degree of accuracy has not been provided, give the answer as follows: - to three significant figures for all values, ecept - to one decimal place for degrees - for π, use either your calculator value or The number of marks is given in brackets [ ] net to each question or part question. The total of the marks for this paper is 67. PLEASE NOTE: this practice eamination paper has been written in association with the below publication and is not an official eam paper: Paperback
3 1 (a) For the diagram above write down (i) the order of rotational symmetry, Answer(a)(i) [1] (ii) the number of lines of symmetry. Answer(a)(ii) [1] (b) The prism below has 6 square faces and a regular heagonal cross-section. Write down the number of planes of symmetry for the prism. Answer(b) [1] Calculate the value of 3+ ( 3) 4 7 (a) writing down all the figures in your calculator answer, Answer(a) [1] (b) writing you answer correct to 3 decimal places. Answer(b) [1] Written specifically for the publication Cambridge IGCSE Mathematics Core Practice Book.
4 3 Find the midpoint of the line joining the points A(4, 3) and B( 3, 0). Answer (, ) [3] 4 Epand the brackets and simplify. 1 (9 3) 5( 3) 3 Answer [] 5 Zagreb changed $600 into euros at an echange rate of $1 = 1.5. He later changed all of the euros back into dollars at an echange rate of $1 = 1.0. How many dollars did he receive? Answer $ [] 6 Solve the simultaneous equations. + 4y = 19 3y 5 = Answer = Answer y = [3] Written specifically for the publication Cambridge IGCSE Mathematics Core Practice Book. 3
5 7 The dimensions of a rectangle are 13 cm by 7 cm, correct to the nearest cm. Find the smallest possible area of the rectangle. Answer cm [] 8 The intensity of radiation from the Sun, R, is inversely proportional to the square of the distance from the Sun, d. When d = 10 8, R = 0. Find d when R = 500. Answer d = [3] 9 Shade the region required in each Venn diagram. A B A B C ( A B ) C A B' [] 10 A woman invested $300 for 5 years at 7% per year compound interest. Calculate the final amount she had after 5 years. Answer $ [3] 4 Written specifically for the publication Cambridge IGCSE Mathematics Core Practice Book.
6 11 A = Work out (a) A (b) A 1, the inverse of A Answer(a) [] Answer(b) [] m 0.7 m A conference table is made of two quarter circles and two identical triangles. The radius of the quarter circles is 0.7 m. Calculate the surface area of the top of the table. Answer m [3] Written specifically for the publication Cambridge IGCSE Mathematics Core Practice Book. 5
7 13 Make the subject of 5 y = 6 Answer = [3] 14 The lengths of the sides of a parallelogram are 6 cm and 8 cm. The length of the longer diagonal of the parallelogram is 11 cm. AB is a side of the parallelogram. Using a straight edge and a compasses only, construct the parallelogram. A 8 cm B [3] 6 Written specifically for the publication Cambridge IGCSE Mathematics Core Practice Book.
8 Car A Speed (m/s) 5 0 Car B Time (seconds) t The graph above shows the journey of two cars, A and B. (a) Work out the acceleration of car A during the first 10 seconds. (b) Calculate how far car B travels before coming to rest. Answer(a) m/s [] (c) State which car eperiences the highest deceleration. Answer(b) m [] Answer(c) [1] Written specifically for the publication Cambridge IGCSE Mathematics Core Practice Book. 7
9 16 Simplify (a) Answer(a) [] (b) ( ) Answer(b) [] 17 Simplifying as much as possible, write the following as a single fraction Answer [4] 8 Written specifically for the publication Cambridge IGCSE Mathematics Core Practice Book.
10 18 14 y (a) Draw the lines y = 1, 6 + y = 1 and y 6 = 0 on the grid above. [4] (b) Write the letter R in the region defined by the three inequalities below. y y 1 y 6 0 [1] Written specifically for the publication Cambridge IGCSE Mathematics Core Practice Book. 9
11 19 Solve the equation = 0 Show all your working and give your answers correct to decimal places. Answer = or = [3] 0 f() = 5 1 g() = (a) Work out f(3). Answer(a) [1] (b) Find fg() in its simplest form. Answer(b) [] (c) Find f 1 (). Answer(c) [] 10 Written specifically for the publication Cambridge IGCSE Mathematics Core Practice Book.
12 1 NOT TO SCALE A 4 D 6 B O 78 Q A, B, C and D lie on the circle, centre O. The line PCQ is a tangent to the circle at C. Angle AOD = 6, angle BAC = 4 and angle DCQ = 78. Find P (a) angle ODA C (b) angle ACD Answer(a) Angle ODA = [1] (c) Angle PCB = 4, find BAD Answer(b) Angle ACD = [1] Answer(c) Angle BAD = [1] Written specifically for the publication Cambridge IGCSE Mathematics Core Practice Book. 11
13 Cambridge IGCSE Mathematics Etended Practice Book Eample Practice Paper (Etended) Mark Scheme Key: A Accuracy marks awarded for a correct answer seen. M Method marks awarded for clear attempt to apply correct method. oe Or Equivalent. allow M marks for methods that include wrong answers from previous results. 1 (a)(i) 4 (a)(ii) 0 (b) 7 (a) (accept more figures) (b) (0.5, 1.5) oe $65 6 Clear attempt at elimination or substitution method = 7, y = (rounding down) = "5" (allow methods that involve finding a formula) oe 9 A B A B C Written specifically for the publication Cambridge IGCSE Mathematics Core Practice Book. Cambridge International Eaminations does not take responsibility for this content. 1
14 n (a) (b) Any correct 5 0 All 4 correct or and 1 10 ; accept π 0.7, 1.6 m y= 5 = 5 6y = (5 6 y) 14 Two arcs at 6 cm from A and B Arc at 11 cm from A or B Arc at 8 cm from intersection of 11 cm and 6 cm arc, and fully correct answer 15 (a) m/s (b) or (finding area under car B curve) 500 m (c) Car A (it has the steeper downward gradient) 16 (a) (b) = Written specifically for the publication Cambridge IGCSE Mathematics Core Practice Book. Cambridge International Eaminations does not take responsibility for this content.
15 17 ( )( + 8) 1 ( )( + 7) y (a) (b) R labelled in triangle formed by lines 19 0 (a) (b) (c) 1 ± = 8.45, y 5 = echange letters, rearrange to y = y 1 5 f ( ) = 1 Written specifically for the publication Cambridge IGCSE Mathematics Core Practice Book. Cambridge International Eaminations does not take responsibility for this content. 3
16 1 (a) 59 (isosceles triangle) (b) 31 (angle at centre = angle at circumference) (c) 10 (opposite angles in a cyclic quadrilateral) Total: 67 4 Written specifically for the publication Cambridge IGCSE Mathematics Core Practice Book. Cambridge International Eaminations does not take responsibility for this content.
17 NAME Cambridge IGCSE Mathematics Etended Practice Book Eample Practice Paper 4 hours 30 minutes PLEASE NOTE: this eample practice paper contains eam-style questions only READ THESE INSTRUCTIONS FIRST Answer all questions. Working for a question should be written below the question. If the answer is not eact but a degree of accuracy has not been provided, give the answer as follows: - to three significant figures for all values, ecept - to one decimal place for degrees - for π, use either your calculator value or The number of marks is given in brackets [ ] net to each question or part question. The total of the marks for this paper is 130. PLEASE NOTE: this practice eamination paper has been written in association with the below publication and is not an official eam paper: Paperback
18 1 One way to measure the height of a flag pole from the ground is to stand in two different positions and measure the angle of inclination of the top of the pole, as well as the difference between the two positions. This is shown below. Diagram 1 D NOT TO SCALE 0 30 A 5 m B C In Diagram 1, angle DAC = 0 and angle DBC = 30. The length AB = 5 m. (a) Find (i) angle ABD, (ii) angle ADB, Answer(a)(i) [1] Answer(a)(ii) [1] (iii) the length BD, using the sine rule, Answer(a)(iii) m [3] (iv) the height of the flag pole, CD. Answer(a)(iv) m [3] Written specifically for the publication Cambridge IGCSE Mathematics Core Practice Book.
19 Another way to measure the height of the flag pole is to use two short poles of a known height and line them up so that their tops aim towards the flag. This is shown in Diagram. Diagram G NOT TO SCALE C m E 3 m A B 4 m D 10 m F In Diagram, BC = m, DE = 3 m, BD = 4 m and DF = 10 m. (b) (i) By considering the similar triangles ABC and ADE, find the length of AB. Answer(b)(i) m [3] (ii) By considering the similar triangles ABC and AFG, find the height of the flagpole, FG. Answer(b)(ii) m [] Written specifically for the publication Cambridge IGCSE Mathematics Etended Practice Book. 3
20 8 y 7 6 A 5 4 B 3 1 D C E (a) Describe fully the single transformatiot on which maps (i) triangle A onto C, Answer(a)(i) [] (ii) triangle C onto D, Answer(a)(ii) [3] (iii) triangle D onto E, Answer(a)(iii) [3] 4 Written specifically for the publicationn Cambridge IGCSE Mathematicss Core Practice Book.
21 (iv) triangle Bon to A. Answer(a)(iv) [3] (b) Find the matri representing the transformation which maps (i) triangle A onto C, Answer(b)(i) [] (ii) triangle B onto A. Answer(b)(ii) [] Written specifically for the publication Cambridge IGCSE Mathematics Etended Practice Book. 5
22 3 Diagram 1 A D NOT TO SCALE B cm 6 cm y cm C The diagram shows a rectangle with a width of cm and a height of y cm. (a) (i) If the perimeter of the rectangle is 68 cm, show that y = 34. Answer(a)(i) [] (ii) The diagonal of the rectangle is 6 cm. Show, using Pythagoras theorem, that satisfies the equation = 0. Answer(a)(ii) [3] (iii) Factorise Answer(a)(iii) [] (iv) Solve the equation = 0. Answer(a)(iv) = or = [1] 6 Written specifically for the publication Cambridge IGCSE Mathematics Core Practice Book.
23 A E D Diagram 1 cm NOT TO SCALE B 1 cm F cm C Diagram shows a different rectangle. The line EF cuts ABCD into two rectangles. (b) (i) Rectangle ABCD is similar to rectangle DEFC. Show that + 1 = 0. Answer(b)(i) [3] (ii) Solve the equation + 1 = 0, giving your answers correct to 3 decimal places. Answer(b)(ii) = or = [3] Written specifically for the publication Cambridge IGCSE Mathematics Etended Practice Book. 7
24 4 (a) The table shows some values for the equation 4 3 y= y (i) Write the missing values of y in the empty spaces. [3] (ii) On the grid, draw the graph of 4 3 y= + for y [5] 8 Written specifically for the publication Cambridge IGCSE Mathematics Core Practice Book.
25 (b) Use your graph to solve the equation = 5. 5 Answer(b) = or = [] (c) (i) By drawing a tangent, work out the gradient of the graph where = 1.5. Answer(c)(i) [3] (ii) Write down the gradient of the graph where = 0. Answer(c)(ii) [1] (d) (i) On the grid, draw the line y = 10. [1] (ii) Use your graphs to solve the equation = 0. Answer(d)(ii) = or = [] Written specifically for the publication Cambridge IGCSE Mathematics Etended Practice Book. 9
26 5 Bag A contains 5 red beads and 5 green beads. Bag B contains red beads and 3 green beads. A bead is taken at random from bag A, then a bead is taken at random from bag B. (a) Complete the tree diagram below, showing the probabilities of each outcome. [3] Bag A Bag B Red Red Green Red Green Green (b) Calculate the probability that (i) two red beads are picked, Answer(b)(i) [] (ii) eactly one red bead is picked. Answer(b)(ii) [] 10 Written specifically for the publication Cambridge IGCSE Mathematics Core Practice Book.
27 (c) All the beads are returned to the bags. A bead is taken from bag A, its colour noted, and placed in bag B. A bead is now taken from bag B. (i) Complete the tree diagram to show the new probabilities. [3] Bag A Bag B Red Red Green Red Green Green Calculate the probability that (ii) two red beads are picked, Answer(c)(ii) [] (iii) at least one green bead is picked. Answer(c)(iii) [] Written specifically for the publication Cambridge IGCSE Mathematics Etended Practice Book. 11
28 6 Small mug Large mug A small cylindrical mug has a diameter of 8 cm, and a holds 500 cm 3 of water. (a) Calculate the height of the small mug. Answer(a) cm [] (b) (i) Work out how many cm 3 there are in 1 m 3. Answer(b)(i) [] (ii) Work out how many small mugs would be filled by 1 m 3 of water. Answer(b)(ii) [1] 1 Written specifically for the publication Cambridge IGCSE Mathematics Core Practice Book.
29 (c) The large mug holds 1000 cm 3 of water. (i) Work out the scale factor for volumes between the small and large mug. Answer(c)(i) [1] (ii) Work out the scale factor for lengths between the small and large mug. Answer(c)(ii) [] (iii) Work out the height of the large mug. Answer(c)(iii) cm [] (d) Calculate the volume of the largest sphere which would fit inside the large mug. Answer(d) cm 3 [3] Written specifically for the publication Cambridge IGCSE Mathematics Etended Practice Book. 13
30 7 The heights of 10 trees in an orchard are measured. The results are used to draw this cumulative frequency diagram. Cumulative frequency Height (cm) (a) Find (i) the median height, (ii) the lower quartile, Answer(a)(i) cm [1] Answer(a)(ii) cm [1] (iii) the interquartile range, (iv) the number of trees with a height greater than 316 cm. Answer(a)(iii) cm [1] Answer(a)(iv) [] 14 Written specifically for the publication Cambridge IGCSE Mathematics Core Practice Book.
31 (b) The frequency table shows the information about the 10 trees that were measured. Height (h cm) 140 h h 0 0 h h h 380 Frequency Frequency density (i) Use the cumulative frequency diagram to complete the table above. [] (ii) Construct a histogram to represent this information Height (cm) [4] (c) Calculate an estimate of the mean height of the 10 trees. Answer(c) [3] Written specifically for the publication Cambridge IGCSE Mathematics Etended Practice Book. 15
32 8 (a) Solve the equation = Answer(a) = [4] (b) (i) 5 4 y = Find the value of y when =. Answer(b)(i) y = [] (ii) Write as a single fraction. Answer(b)(ii) [] 16 Written specifically for the publication Cambridge IGCSE Mathematics Core Practice Book.
33 (iii) Solve the equation = Answer(b)(iii) = [3] (c) b a = c + d Find c in terms of a, b and d. Answer(c) c = [3]114 Written specifically for the publication Cambridge IGCSE Mathematics Etended Practice Book. 17
34 9 P T Q R S The diagram shows the triangle PQS. T is the midpoint of PS and R divides QS in the ratio 1 : 3. PT = a and PQ = b. (a) Epress in terms of a and/or b, as simply as possible, the vectors (i) PS (ii) QS Answer(a)(i) PS = [1] (iii) PR Answer(a)(ii) QS = [] 1 (b) Show that RT = ( a 3 b ) 4 Answer(b) Answer(a)(iii) PR = [] [3] 18 Written specifically for the publication Cambridge IGCSE Mathematics Core Practice Book.
35 10 Diagram 1 Diagram Diagram 3 Diagram 4 Diagram 5 The diagram shows a pattern of triangles of dots. (a) Complete the table below. Diagram number Number of triangles Number of dots [] (b) Work out the number of triangles and the number of dots in the 8th diagram. Answer (b) Number of triangles =, Number of dots = [] (c) Write down an epression for the number of triangles in the nth diagram. Answer(c)... [1] (d) The number of dots in the nth diagram is kn ( + 3n+ ). Find (i) the value of k, Answer(d)(i) k = [] (ii) the number of dots in diagram 100. Answer(d)(ii) [1] Written specifically for the publication Cambridge IGCSE Mathematics Etended Practice Book. 19
36 Cambridge IGCSE Mathematics Etended Practice Book Eample Practice Paper 4 (Etended) Mark Scheme Key: A Accuracy marks awarded for a correct answer seen. M Method marks awarded for clear attempt to apply correct method. oe Or Equivalent. allow M marks for methods that include wrong answers from previous results. 1 (a)(i) 150 (a)(ii) 10 (a)(iii) BD 5 = sin 0 sin m (a)(iv) CD sin 30 = BD CD = sin m (b)(i) 3 4+ AB = AB 3AB= 8+ AB AB = 8 m (b)(ii) 13 FG = 8 FG = 33 m (a)(i) Reflection, in -ais (a)(ii) Enlargement, factor 1 3, centre (6, 6) (a)(iii) Rotation, 180, about (3, 1) (a)(iv) Stretch in y-direction, scale factor 3, about -ais as invariant line (b)(i) (b)(ii) Written specifically for the publication Cambridge IGCSE Mathematics Core Practice Book. Cambridge International Eaminations does not take responsibility for this content. 1
37 3 (a)(i) + y = 68 + y= 34 (a)(ii) + y = 6 + (34 ) = = 0 proceeding to result (a)(iii) ( 10)( 4) (a)(iv) = 10 or 4 (b)(i) AD DC = oe AB FC 1+ 1 = oe 1 (1 + ) = 1 leading to result (b)(ii) 1± 5 = = 0.618, (a)(i) 0, 0, 4.4 (accept 4.39) 0 y 15 (a)(ii) Shape Points accurate Smooth curve Domain correct 15 0 (b) 5., 1.6 (allow ± 0.5 squares from their graph) (c)(i) Correct tangent drawn Correct triangle used to calculate gradient Gradient = appro. 4 (c)(ii) 0 Written specifically for the publication Cambridge IGCSE Mathematics Core Practice Book. Cambridge International Eaminations does not take responsibility for this content.
38 0 y (d)(i) (d)(ii) 5,. (allow ± 0.5 squares) From top to bottom of tree diagram: 5 (a) P(G) = 3/5, P(R) = /5, P(G) = 3/5 (b)(i) oe (b)(ii) (c)(i) 0.5 oe From top to bottom of tree diagram: P(G) = 3/6, P(R) = /6, P(G) = 4/6 (c)(ii) oe (c)(iii) oe 0.75 oe Written specifically for the publication Cambridge IGCSE Mathematics Core Practice Book. Cambridge International Eaminations does not take responsibility for this content. 3
39 6 (a) 500 π cm (b)(i) = oe (b)(ii) = (c)(i) = (c)(ii) (c)(iii) cm (d) r = = π( ) 3 V = cm 3 7 (a)(i) 70 cm (a)(ii) 36 cm (a)(iii) = 64 cm (a)(iv) Reading correctly at 316 cm = 0 trees (b)(i) 10, 30 f 1 (b)(ii) Widths Relative heights Correct FDs (c) = 3400 "3400" cm Written specifically for the publication Cambridge IGCSE Mathematics Core Practice Book. Cambridge International Eaminations does not take responsibility for this content.
40 8 (a) Finding LCM of 6 and 9 (18) 3( 5) + ( + ) = = 7 61 = oe 5 (b)(i) oe (b)(ii) (b)(iii) 5 3 5( + 4) 4( 3) ( 3)( + 4) + 3 ( 3)( + 4) = ( 3)( + 4) (allow epanded denominator) + 3= + 1 leading to 31 = 1 1 = 31 (c) ac ( + d) = b b c+ d = a b c= d oe a 9 (a)(i) a (a)(ii) QS = QP + PS b + a (a)(iii) PR = PQ + QR leading to b+ 1 ( b+ a ) b+ a 4 (b) RT = RQ+ QP+ PT or PR + RT = a, so RT = a PR 1 ( b + a ) b + a or a (¾b + ½a) = ½a ¾b b+ a leading to result given 4 10 (a) Triangles 16, 5 Dots 15, 1 (b) Triangles 64, Dots 45 (c) n (d)(i) k ( ) = 3 k = 0.5 (d)(ii) 0.5( ) = 5151 Total: 130 Written specifically for the publication Cambridge IGCSE Mathematics Core Practice Book. Cambridge International Eaminations does not take responsibility for this content. 5
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