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Mark scheme instructions to examiners

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Question 5 Total 6 Q Marking instructions AO Marks Typical solution 6(a) Squares a number with two or more digits and adds its digits. Must be explicit 1.1a M1 3≠4 Completes argument to show that Asif’s method is incorrect Must compare sum of digits with last digit of square number 2.3 R1 Subtotal 2 Q Marking instructions AO Marks Typical solution 6(b) Obtains 1 1.1b B1 1 Subtotal 1 Q Marking instructions AO Marks Typical solution 6(c) Lists at least four single digits and their squares Or Explains why odd digits do not need to be considered 1.1a M1 02 =0 12 =1 22 =4 32 =9 42 =16 52 =25 62 =36 72 =49 82 =64 92 =81 Therefore, there can be no square number which has a last digit of 8 Completes rigorous argument to prove that no square number has a last digit of 8 OE CSO 2.1 R1 Subtotal 2 Question 6 Total 5 Q Marking instructions AO Marks Typical solution 7(a) Identifies the height of the triangle or rectangle as 15−q2 PI by (q,15−q2), h=15 q−2or y=15 q−2 may be indicated on diagram 3.1a M1 =15

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A-level
MATHEMATICS
7357/2
Paper 2

Mark scheme

June 2022

Version: 1.0 Final Mark Scheme

, MARK SCHEME – A-LEVEL MATHEMATICS – 7357/2 – JUNE 2022



*226A7357/2/MS*
Mark schemes are prepared by the Lead Assessment Writer and considered, together with the relevant
questions, by a panel of subject teachers. This mark scheme includes any amendments made at the
standardisation events which all associates participate in and is the scheme which was used by them in
this examination. The standardisation process ensures that the mark scheme covers the students’
responses to questions and that every associate understands and applies it in the same correct way. As
preparation for standardisation each associate analyses a number of students’ scripts. Alternative
answers not already covered by the mark scheme are discussed and legislated for. If, after the
standardisation process, associates encounter unusual answers which have not been raised they are
required to refer these to the Lead Examiner.

It must be stressed that a mark scheme is a working document, in many cases further developed and
expanded on the basis of students’ reactions to a particular paper. Assumptions about future mark
schemes on the basis of one year’s document should be avoided; whilst the guiding principles of
assessment remain constant, details will change, depending on the content of a particular examination
paper.


Further copies of this mark scheme are available from aqa.org.uk




Copyright information




2

, MARK SCHEME – A-LEVEL MATHEMATICS – 7357/2 – JUNE 2022


AQA retains the copyright on all its publications. However, registered schools/colleges for AQA are permitted to copy material from this booklet for their own
internal use, with the following important exception: AQA cannot give permission to schools/colleges to photocopy any material that is acknowledged to a third
party even for internal use within the centre.

Copyright © 2022 AQA and its licensors. All rights reserved.

Mark scheme instructions to examiners

General

The mark scheme for each question shows:
• the marks available for each part of the question
• the total marks available for the question
• marking instructions that indicate when marks should be awarded or withheld including the principle on
which each mark is awarded. Information is included to help the examiner make his or her judgement
and to delineate what is creditworthy from that not worthy of credit
• a typical solution. This response is one we expect to see frequently. However credit must be given on
the basis of the marking instructions.

If a student uses a method which is not explicitly covered by the marking instructions the same principles
of marking should be applied. Credit should be given to any valid methods. Examiners should seek
advice from their senior examiner if in any doubt.

Key to mark types

M mark is for method
R mark is for reasoning
A mark is dependent on M marks and is for accuracy
B mark is independent of M marks and is for method and accuracy
E mark is for explanation
F follow through from previous incorrect result

Key to mark scheme abbreviations

CAO correct answer only
CSO correct solution only
ft follow through from previous incorrect result
‘their’ Indicates that credit can be given from previous incorrect result
AWFW anything which falls within
AWRT anything which rounds to
ACF any correct form
AG answer given
SC special case
OE or equivalent
NMS no method shown


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