Specimen Papers Set 2 - September 2015 © Pearson …

1 24*S50158A02424* DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREABLANK PAGEP earson Edexcel Level 1/Level 2 GCSE (9-1) in mathematics - Specimen Papers Set 2 - September 2015 Pearson Education Limited 2015145145 Pearson Edexcel Level 1/Level 2 GCSE (9-1) in mathematics - Specimen Papers Set 2 - September 2015 Pearson Education Limited 2015 Paper 1MA1: 2 HQuestionWorkingAnswerNotes1 Translation by 4 3 B1for translation B1 4 3 2(a)Trend describedC1for percentage of people who use the shop decreases oe(bi)13-17P1for process to draw trend line on graphA1for 13 -17(bii)No + reasonC1for comment, eg no, because 2020 is beyond the time period covered by the given data 3(a)13y 1M1for expansion of one bracketA1for full simplification(b)35u3w7B1for 2 of 35,u3andw7correctB1cao4105P1for process to find the exterior angle or interior angle of a hexagon or octagonP1for process to find the both exterior angles or both interior anglesA1for 105 from correct workingPearson Edexcel Level 1/Level 2 GCSE (9-1)

2 In mathematics - Specimen Papers Set 2 - September 2015 Pearson Education Limited 2015146146 Pearson Edexcel Level 1/Level 2 GCSE (9-1) in mathematics - Specimen Papers Set 2 - September 2015 Pearson Education Limited 2015 Paper 1MA1: 2 HQuestionWorkingAnswerNotes5(a)(i)10, 12, 14, 15, 16, 18B1cao(ii)12, 18B1cao(b)710M1for 7 or indicating correct region or for 10, 14, 16, 11, 13, 17, 19 listedA1for 710 oe66 : 5 = 12 : 102 : 1 = 10 : 570P1P1 for strategy to start to solve the problem eg 12 : 10 and 10: 5C : S : P = 12 : 10 : 5P1P1 for process to solve the problemeg 1027 1891027 189A1A1 cao714 use of formula for area of a circle12 complete process to find area of shaded region14 12 Edexcel Level 1/Level 2 GCSE (9-1) in mathematics - Specimen Papers Set 2 - September 2015 Pearson Education Limited 2015147147 Pearson Edexcel Level 1/Level 2 GCSE (9-1) in mathematics - Specimen Papers Set 2 - September 2015 Pearson Education Limited 2015 Paper 1MA1.

3 2 HQuestionWorkingAnswerNotes8(a)explanati onC1for incorrect expansion of brackets oe(b)explanationC1for has not obtained both solutions oe9(a)18B1cao(b)5(x 1)M1for method to find inverse functionA1for 5(x 1) or 5x 5(c)9x 48 shownM1for method to find composite functionA1for working leading to 9x 4810(a)1560000 ( )21730000P1for process to find population in 2016P1for complete process to find population in 2017A1for 1725000 -1730000(b)(i)2020P1for process to find when population will exceed 2 000 000A1for 2020(ii)C1for correct comment on how assumption will affect the answer, eg if the percentage growth is higher the population may exceed 2 000 000 Edexcel Level 1/Level 2 GCSE (9-1) in mathematics - Specimen Papers Set 2 - September 2015 Pearson Education Limited 2015148148 Pearson Edexcel Level 1/Level 2 GCSE (9-1) in mathematics - Specimen Papers Set 2 - September 2015 Pearson Education Limited 2015 Paper 1MA1.

4 2 HQuestionWorkingAnswerNotes11(a) use of graph at 240 minutesA1for oe(b)comparison B1for at least one median (249 252 or 273 276)B1for least one interquartile range (69 73 or 67 -71)C1for comment comparing average times egfemales take longer than males oe C1for comment comparing spreads of times from IQRs, eg the spread of times is about the same(NB at least one of the comments must be in context)12(a)25 24600P1for process to find number of waysA1cao(b)12 10 11 10 12 91320 + 10802400P1for process to find number of lists with boy then girl then boy orthe number of lists with girl then boy then girlP1for complete process to find the total number of listsA1caoPearson Edexcel Level 1/Level 2 GCSE (9-1) in mathematics - Specimen Papers Set 2 - September 2015 Pearson Education Limited 2015149149 Pearson Edexcel Level 1/Level 2 GCSE (9-1) in mathematics - Specimen Papers Set 2 - September 2015 Pearson Education Limited 2015 Paper 1MA1.

5 2 HQuestionWorkingAnswerNotes13119M1for 100 oe M1for 100oeA1accept a correct evaluation, eg the value of Dshould be multiplied by 8, she has used 2 3 instead of 2 15(a) finding gradient by drawing tangentM1for method to calculate gradientA1 For (b)C1for accelerationC1for eg 4 second after the start of the race , when the speed is m/s , in m/s2 (c)limitationC1for comment, eg dependent on accuracy of constructing a tangent16(i)200B1cao(ii) ( ) Pearson Edexcel Level 1/Level 2 GCSE (9-1) in mathematics - Specimen Papers Set 2 - September 2015 Pearson Education Limited 2015150150 Pearson Edexcel Level 1/Level 2 GCSE (9-1) in mathematics - Specimen Papers Set 2 - September 2015 Pearson Education Limited 2015 Paper 1MA1.

6 2 HQuestionWorkingAnswerNotes17 finding bounds of one measurement, , or process of choosing and using correct boundsP1for process of Pythagoras rule with correct bounds A1for ( )18( +2 )( 2 )a 4bM1for expansion of brackets or 42bb= 2 +2 2 2 M1for aor ( 4b)A1cao19(a)sketchB1for correct shape for 0 x 360B1for fully correct sketch with labels(b)(i)sketchB1cao(ii)sketchB1caoPe arson Edexcel Level 1/Level 2 GCSE (9-1) in mathematics - Specimen Papers Set 2 - September 2015 Pearson Education Limited 2015151151 Pearson Edexcel Level 1/Level 2 GCSE (9-1) in mathematics - Specimen Papers Set 2 - September 2015 Pearson Education Limited 2015 Paper 1MA1.

7 2 HQuestionWorkingAnswerNotes20 TSU= 360 5 (=72)Exterior angles of a polygon add up to 360oproofM1for method to find interior or exterior angle of regular pentagon QRO= OTP= 90 The tangent to a circle is perpendicular (90o)to the radius(diameter)M1for using angle between tangent and radius ROT= 540 2 90 2 108 (= 144)M1for method to find angle ROT RUT= 144 2 (= 72)The angle at the centre of a circle is twice the angle at the circumferenceC1for method to find angle RUTwith reasonBase angles of an isosceles triangle are equalC1for deduction that ST=UTwith reasons212 1 4 =16 + 1 2 1 112, 5P1for process to write as an equation(2x 1) = (16x+1)(x 4)P1for process to clear the fractions12x 59x 5 = 0P1for process to write equation in form ax + bx+ c = 0(12x+ 1)(x 5) = 0P1for process to solve the equationA1cao