Practice Papers Set 1 Teacher Booklet GCSE MATHEMATICS. Original Specimen Assessment Materials Paper 1 Foundation Mark Scheme 8300/1F. Version 3.

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1 Practice Papers Set 1 Teacher Booklet GCSE MATHEMATICS Original Specimen Assessment Materials Paper 1 Foundation Mark Scheme 8300/1F Version 3.0 This mark scheme ds not reflect in full the expected standard and requirements f GCSE mathematics in 2017 and is superseded by the new specimen mark scheme published in June 2015

2 Principal Examiners have prepared these mark schemes f specimen papers. These mark schemes have not, therefe, been through the nmal process of standardising that would take place f live papers. Further copies of this Mark Scheme are available from aqa.g.uk Glossary f Mark Schemes GCSE examinations are marked in such a way as to award positive achievement wherever possible. Thus, f GCSE Mathematics papers, marks are awarded under various categies. If a student uses a method which is not explicitly covered by the mark scheme the same principles of marking should be applied. Credit should be given to any valid methods. Examiners should seek advice from their seni examiner if in any doubt. M A B ft SC M dep B dep Method marks are awarded f a crect method which could lead to a crect answer. Accuracy marks are awarded when following on from a crect method. It is not necessary to always see the method. This can be implied. Marks awarded independent of method. Follow through marks. Marks awarded f crect wking following a mistake in an earlier step. Special case. Marks awarded within the scheme f a common misinterpretation which has some mathematical wth. A method mark dependent on a previous method mark being awarded. A mark that can only be awarded if a previous independent mark has been awarded. Or equivalent. Accept answers that are equivalent. 1 eg accept 0.5 as well as 2 [a, b] Accept values between a and b inclusive Allow answers which begin 3.14 eg 3.14, 3.142, Use of brackets It is not necessary to see the bracketed wk to award the marks. Page 2 Version 3.0

3 MARK SCHEME GCSE MATHEMATICS ORIGINAL SPECIMEN PAPER PAPER 1 FOUNDATION Examiners should consistently apply the following principles Diagrams Diagrams that have wking on them should be treated like nmal responses. If a diagram has been written on but the crect response is within the answer space, the wk within the answer space should be marked. Wking on diagrams that contradicts wk within the answer space is not to be considered as choice but as wking, and is not, therefe, penalised. Responses which appear to come from increct methods Whenever there is doubt as to whether a student has used an increct method to obtain an answer, as a general principle, the benefit of doubt must be given to the student. In cases where there is no doubt that the answer has come from increct wking then the student should be penalised. Questions which ask students to show wking Instructions on marking will be given but usually marks are not awarded to students who show no wking. Questions which do not ask students to show wking As a general principle, a crect response is awarded full marks. Misread miscopy Students often copy values from a question increctly. If the examiner thinks that the student has made a genuine misread, then only the accuracy marks (A B marks), up to a maximum of 2 marks are penalised. The method marks can still be awarded. Further wk Once the crect answer has been seen, further wking may be igned unless it gs on to contradict the crect answer. Choice When a choice of answers and/ methods is given, mark each attempt. If both methods are valid then M marks can be awarded but any increct answer method would result in marks being lost. Wk not replaced Erased crossed out wk that is still legible should be marked. Wk replaced Erased crossed out wk that has been replaced is not awarded marks. Premature approximation Rounding off too early can lead to inaccuracy in the final answer. This should be penalised by 1 mark unless instructed otherwise. Version 3.0 Page 3

4 Q Answer Mark Comments 1(a) 20% 1(b) 90% x 4 2.3b (4) Linear scale from zero used f frequency Bars at crect heights and equal widths with equal gaps Bars labelled Vertical axis labelled eg Number of students, frequency Vertical axis can be hizontal f a hizontal bar chart 5 1.3a (2) Arrow at 0 labelled B Arrow at 6 1 labelled C a (2) 3.7 ft ft 23.7 their 20 SC Page 4 Version 3.0

5 MARK SCHEME GCSE MATHEMATICS ORIGINAL SPECIMEN PAPER PAPER 1 FOUNDATION Q Answer Mark Comments 8 1.3b (2) A c (1) 3.3 (1) Alternative method (5) 16 remainder (2) A May be implied 17 A1ft ft their rounded up Alternative method 2 Lists multiples of 8 up to at least 120 counts down in 8s to at least = = 136 A1 Allow one err May be implied 17 A1ft a (2) A1 Version 3.0 Page 5

6 Q Answer Mark Comments a (2) Alternative method 1 Plots at least 2 points crectly Plots 3 crect points and Isosceles A1 SC1 crect type f their 3 points Alternative method 2 Two from and and A1 and and and Isosceles Alternative method 3 (3 0) 2 + (5 3) (0 5) 2 + (3 2) (3 5) 2 + (5 2) , 50 and 73 and Isosceles A1 Page 6 Version 3.0

7 MARK SCHEME GCSE MATHEMATICS ORIGINAL SPECIMEN PAPER PAPER 1 FOUNDATION Q Answer Mark Comments 12(a) 1.2 (1) 12(b) 1.2 (1) 12(c) 1.2 (1) a (2) 4x = x = 20 5 A1 SC d (2) Alternative method A1 Alternative method 2 ( ) ( ) A1 Version 3.0 Page 7

8 Q Answer Mark Comments 15(a) (= 6400) 15(b) Alternative method 1 1.3b (1) 3.1d (3) At least one row crect, with the 0 crect f multiplication by the multiple of 10 their their 740 their their 690 dep 851 A ft ft their crectly calculated Page 8 Version 3.0

9 MARK SCHEME GCSE MATHEMATICS ORIGINAL SPECIMEN PAPER PAPER 1 FOUNDATION Q Answer Mark Comments 15(b) Alternative method At least three crect, with the 00 and the 0s crect f multiplication by the multiples of their their their 90 + their 21 dep 851 A ft ft their crectly calculated Alternative method At least 3 of the 2-digit numbers crect Total calculated f each diagonal dep 851 A ft ft their crectly calculated Alternative method 4 (23 8 =) 184 (37 8 =) 296 their their dep 851 A ft ft their crectly calculated Version 3.0 Page 9

10 Q Answer Mark Comments 15(c) Sensible 3.4b (1) and (6400 and 6808) are close not sensible and over 400 out eg sensible and only about 400 out not sensible and over 5% out 16(a) a (1) 16(b) [8, 8.4] May be implied by crect answer 1.3b (1) 3.1d (1) [640, 672] ft ft their [8, 8.4] 50 17(a) 2 : 5 2.3b (1) 17(b) ( 100) 15 3 ( 100) 2.3a (1) 5 1 ( 100) 20 A a (1) No and shows a multiple of 20 crectly divided by 2 eg No and 20 2 = 10 Page 10 Version 3.0

11 MARK SCHEME GCSE MATHEMATICS ORIGINAL SPECIMEN PAPER PAPER 1 FOUNDATION Q Answer Mark Comments 19(a) Crect translation drawn 19(b) 3.1a (1) Crect rotation drawn B2 f crect rotation but increct position on grid a (2) A1 Version 3.0 Page 11

12 Q Answer Mark Comments c (2) Alternative method 1 Lists the multiples of two of 12, 10, 6 12, 24, , 20, , 12, Writes out all the multiples to at least A1 May be implied by crect number of boxes 5 and 6 and 10 ft ft their multiple of 60 Alternative method 2 Lists the prime facts of two of 12, 10, 6 12 = = = A1 May be implied by crect number of boxes 5 and 6 and 10 ft ft their multiple of 60 Page 12 Version 3.0

13 MARK SCHEME GCSE MATHEMATICS ORIGINAL SPECIMEN PAPER PAPER 1 FOUNDATION Q Answer Mark Comments b (1) 3.1b (2) Alternative method Valid comparison eg and and and A1 Must see wking 5 Alternative method (%) 62.5(%) 50(%) 0.4 and and and (%) and 62.5(%) and 50(%) 10(%) and 12.5(%) 2 A1 Must see wking 5 23(a) 2.3a (1) % 23(b) 2.3a (1) strong positive 23(c) 2.3a (1) Straight ruled line of best fit Through (30, 1) to (35, 1) and (60, 6) to (65, 6) 4 23(d) 2.5a (1) Refers to danger when extrapolating outside the range of the data given Refers to difficulty of interpolation at certain points eg 35 lessons suggests 1 2 tests eg line of best fit might not continue eg 20 lessons suggests 0 tests Version 3.0 Page 13

14 Q Answer Mark Comments 24(a) 2.3b (1) Crect rectangle shaded 24(b) 2.3b (1) Crect two rectangles shaded 24(c) 2.3b (1) Crect three rectangles shaded 24(d) 2.3b (1) 2ab + ad + 2cd eg unsimplified eg d(a + 2c) + 2ab 25(a) 2.1a (1) Ben and valid reason eg shtest time took 4.5 minutes 25(b) Makes 4 crect statements B4 Max B3 f only referring to 2 boys 2.3a (4) Must refer to all 3 boys Max B2 f only referring to 1 boy f each valid statement Valid statements could include: Alan started in the lead (Ben 2nd, Carl 3rd) After 2.5 minutes / 500 m Ben slowed down After 3.5 minutes / 600 m Ben increased speed After 4 minutes / 600 m Carl increased speed After 3 minutes / 800 metres Alan stopped (f 0.25 minutes) After 3.25 minutes Alan set off again Alan and Carl both finish in 5 minutes Ben and Carl both finish at the same speed Finishing der: Ben wins, Alan and Carl tie f 2nd Page 14 Version 3.0

15 MARK SCHEME GCSE MATHEMATICS ORIGINAL SPECIMEN PAPER PAPER 1 FOUNDATION Q Answer Mark Comments b (3) and their their (3, 20) A b (1) 3.2 (2) 3x 38 = 2x x 2x = dep Collects terms 53 A1 28 (2x + 3y = 15.5) (2x + 3y = 15.5) Equates cfficients 1.3b (3) 2x + 2y = 12 3x + 3y = 18 y = 3.5 A1 x = 2.5 x = 2.5 and y = 3.5 A b (1) 14 BD 2 = b (3) BD = dep their A1 SC Version 3.0 Page 15

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17 Copyright 2014 AQA and its licenss. All rights reserved. AQA retains the copyright on all its publications. However, registered schools/colleges f AQA are permitted to copy material from this booklet f their own internal use, with the following imptant exception: AQA cannot give permission to schools/colleges to photocopy any material that is acknowledged to a third party even f internal use within the centre. SP/07/14