GCSE Mathematics (9 1) Practice Tests Set 9 Paper 2F Mark .

GCSE Mathematics (9–1) Practice Tests Set 9 – Paper 2F mark schemeQuestion123WorkingAnswer4042 100 oe, e.g. 42 1.258052.50.72 350 oe252Mark1NotesB12M1A12M1A1Total 3 B1(c)Correctly completedpictogram1B11½ symbols oeTotal 3 marks5aR marked1B1bTrapezium1B1c651B1 accept answer in the range 63 – 67GCSE Mathematics (9–1) Practice Tests Set 9 – Paper 2F mark scheme1

Question(a)6Workingchocolate 2278AnswerCorrect completedtableMark3B3Notesfully correct tableB2for 4 or 5 correct entriesB1for 2 or 3 correct entries2142. .43120.(b)221202M1 For 22 (n 22) or m (m n120A1 120)oe, allow 0.18(33.)Total 5 marks7(a)2 5 7 2 35(b)GCSE Mathematics (9–1) Practice Tests Set 9 – Paper 2F mark scheme2Correct statement1B1e.g. Billy should have done 5 7and added 2 to the answer to this.Correct sum1B1e.g. 2 4 6(2 added to any even number)Total 4 marks

8(a)20 2 ( 10th) or (20 1) 2 ( 10.5th)(b)21B112M1Or evidence of correct working bytable or listing numbersA1(c)(6 0) (5 1) ((7 2) (1 3) (0 4) (1 5)(0) 5 14 3 (0) 5272M1For at least 4 correct products withintention to add.A1Total 5 marksQuestion9Working1.35 3 ( 0.45)[4.15 – (5 “0.45”)] 2Answer0.95Mark3NotesM1M1A1Total 3 marks10(a)7.51B1oe 15 , 7 12(b) (i)(ii)23.181(983516.)2M1A1For 57.9121 or 18.2 oe3.21B1ft ft as long as (i) has at least 3 sf.Total 4 marksGCSE Mathematics (9–1) Practice Tests Set 9 – Paper 2F mark scheme3

11(a)3.91B1(b)12961B1714.1(40335)27141M1 for 26.72 or 15775.36 or 22.09A1B1 ft if at least 4 sig figs are given in (c)(c)(26.72 )2 ark1B1NotesAccept 69 – 71641B1Accept 63 – 6518903M1M1A1(ii)(b)Question13500 euros (500 50) “70” ( 700) oe“700” 2.7Working240 m, 200 f( 156) orAnswer326( 170)156 170GCSE Mathematics (9–1) Practice Tests Set 9 – Paper 2F mark scheme4Mark41880 – 1900, ft answer to (a)(i)Total 5 marksNotesB1 for 240 and 200M1 as long as their numbers add up to 440

Question(a)14WorkingAnswer 2p 15 8 or 8 2p 15 or 8 p 15 oe2152Mark2 3.5x 10 y 11 oe or y – x 7 oe33 11 ( 33)2egNotesM1A1oeM1for one correct equation in x and yOR finding the total of x, 10 and yOR two numbers with a sum of 23OR two numbers with a range of 7Note: condone non-integers for theaward of M1A1x 8, y 15Total 2 marksQuestion16Workingarea 2 1.25 ( 2.5)AnswerF(F ) 42 “2.5” or 42 "2.5"105GCSE Mathematics (9–1) Practice Tests Set 9 – Paper 2F mark scheme5MarkNotesM1M1Correct substitution into pressureformulaA1cao

Question17Working675 (5 4) 5 ( 375)“375” 5 3Answer225Mark3M1M1A1NotesM2 675 (5 4) 3dep M1Total 3 marksQuestion18Working1 5 3 9 5 24 7 40 9 7 ( 495)or5 27 120 280 63 ( 495)Answer5.8“495” 85Mark4M2M1A1GCSE Mathematics (9–1) Practice Tests Set 9 – Paper 2F mark scheme6Notesfor at least 4 correct products added(need not be evaluated)If not M2 then awardM1 for consistent use of value withininterval (including end points) for atleast 4 products which must be addedORcorrect mid-points used for at least 4products and not addeddep on at least M1Allow division by theirf provided addition or total undercolumn seenfor 5.8 5.824Total 4 marks

Question19WorkingAnswereg (6.3 1000) 210 ( 30)Mark42 "30" 13 ( 156)5 2 1 "30" 0.8 13 ( 187.20) 5 343.2(0)NotesM1 for a method to find the number ofcandles, could work in grams or kgM1 for a method to find money madefrom the 13 candlesM1 for a method to find money madefrom the reduced candlesA1Total 4 marksQuestion20WorkingAnswer42oe or60402 (mins) or 24120 (secs) OR 10.8(33 )(km)6h 42 min 6.7 h or 6eg 6.7 650 or (402 650) 60 or(24120 650) 3600 or 6 650 42 10.8MarkNotes3B1 for converting 6h 42min into hours orminutes or seconds OR findingdistance travelled in 1 minuteM1 use of s t, allow 6.42 650 ( 4173)4355A1Total 3 marksGCSE Mathematics (9–1) Practice Tests Set 9 – Paper 2F mark scheme7

Question(a)21WorkingAnswerk15Mark1B15y 42B22M1(b)(c)h – f 3e orhf e 33orh f3e h f3NotesA1B1 for fully simplifying terms in xor terms in yoe, accept e f h 3Total 6 marksGCSE Mathematics (9–1) Practice Tests Set 9 – Paper 2F mark scheme8

Question22Working1.5Eg 20 000 oe or 300100AnswerORMark3for eg1.5 20 000100oeor 300M1for completingmethod20 000 1.01531.5 (20 000 ’300’) 304.51001.5 (20 000 ’300’ ’304.5’)100 20913.567520 914Question23Working160² 200² ( 65600)Answer1602 2002256NotesORM2 for20 000 1.0153 or20000 1.0154 or 21227.27.M1A1Mark3(M1 for20 000 1.015²or 20 604.5)Accept 1 0.015 as equivalent to 1.015throughoutSC: If no other marks gained, awardM1 for 20 000 1.045 oe or 20900 or900Answers in range 20 913– 20 914Total 3 marksNotesM1M1A1accept 256 – 256.2Total 3 marksGCSE Mathematics (9–1) Practice Tests Set 9 – Paper 2F mark scheme9

Question24WorkingAnswerInterior angle of pentagon(180 3) 5 ( 108) oeMark4Interior angle of octagon(180 6) 8 ( 135) oeNotesM1M1(CBF ) 360 – (“108” “135”) ( 117)M1A131.5or exterior angle of pentagon 360( 72)5or exterior angle of octagon360( 45) 8(CBF ) “72” “45” ( 117)Total 4 marksQuestion25Working72 1000 ( 72000) or 72 60 ( 1.2) or72 60 60 ( 0.02) or 60 60 1000 ( 3.6)Answer2072 100060 60Mark3M1Notesfor at least one of 1000 or 60M1(dep) for a complete methodA1Total 3 marksGCSE Mathematics (9–1) Practice Tests Set 9 – Paper 2F mark scheme10

Mean score of students achieving Q12aiQ12aiiQ12bQ13Q14Q15Skill testedDecimalsPercentagesPercentagesGraphical representation of dataGraphical representation of dataGraphical representation of dataAngles[comma] lines and trianglesMensuration of 2D shapesAngles[comma] lines and trianglesGraphical representation of dataProbabilityIntegersIntegersStatistical measuresStatistical measuresStatistical measuresApplying numberPowers and rootsElectronic calculatorsDegree of tagesLinear equationsStatistical 70.690.960.761.181.490.940.61MaxscoreGCSE Mathematics (9–1) Practice Tests Set 9 – Paper 2F mark .000.910.450.270.360.000.00

Mean score of students achieving kill testedMeasuresRatio and proportionStatistical measuresApplying numberMeasuresAlgebraic manipulationExpressions and formulaePercentagesTrigonometry and Pythagoras' 2334380604342483648362527282652Suggested Grade Boundaries based on peformance of students in Summer 2018554441330219113GCSE Mathematics (9–1) Practice Tests Set 9 – Paper 2F mark 00.1814.33

GCSE Mathematics (9 1) Practice Tests Set 9 Paper 2F mark scheme 7 Question Working Answer Mark Notes 19 eg (6.3 1000) 210 ( 30) 4 M1 for a method to find the number of candles, could work in grams or kg 2 "30" 13( 156) 5 u u M1 for a method to find money made from the 13 candles 2 1 "30" 0.8 13( 187.20) 5 §·