Edexcel GCSE Mathematics A Higher Paper 2016 Unofficial Markscheme

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    Does anyone remember how the circle theorem question looked like? If so please could you draw it and show meh
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    (Original post by natashabeth)
    This is all incorrect do NOT TRUST THIS PAGE WARNINGGGGG
    Why
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    (Original post by ad4m)
    difficult to say considering the fact that only 1 paper has been sat. however, if paper 2 is similar then 160-165 for A*


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    **** i need an at least an A on this paper to do maths A-level
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    According to this I've lost only 5 marks so far
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    (Original post by Anonymous20000)
    I factorised the letter one (t=5x+20y) will i still get the mark if thats right??
    Probably not. While it still works, they didn't ask you do to it nor is it in the "correct" form.
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    (Original post by kennethdcharles)
    According to this I've lost only 5 marks so far
    I've dropped 8 cuz I'm stoooopid feels bad man.
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    You know for the crisps question where is says why is asking students at a school not a good sample.

    Would this answer be ok:

    It is not a good sample because asking students at a school is not representative of all people.

    ??
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    My predictions for grade boundaries (I've tried to look at the jumps between 2010-2015)

    A*- highest the boundaries could go: 165-168/200
    A*-lowest grade boundaries could go: 160-162/200

    It is unlikely they will keep it around 155 like last year my personal thought because the test was doable

    A-highest the boundaries could go: 133-136/200
    A- lowest the boundaries could go : 128-132/200

    The boundaries will usually go down by 30-35 for each grade
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    the last question asked for the exact figure tho....?
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    Yes the sample is too small and bad representation
    (Original post by junayd1998)
    You know for the crisps question where is says why is asking students at a school not a good sample.

    Would this answer be ok:

    It is not a good sample because asking students at a school is not representative of all people.

    ??
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    another part of Q3 was: the sample was taken from students. Why is this a bad sample group?
    i put because it would not represent everyone as it is an unvaried sample group.
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    (Original post by Xxxibgdrgn)
    the last question asked for the exact figure tho....?
    I think it means it should be completely accurate so you have to leave it as a surd
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    (Original post by Xxxibgdrgn)
    the last question asked for the exact figure tho....?
    Exact means surds.
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    For Question 14 i did all that working but put 75 pi as my answer
    (Original post by LogicalFallacy)
    Hey, if anybody is willing to contribute the answers, and preferably the questions, then I shall set up a mark scheme for you all. Thanks in advance!

    Can people please attach question numbers to their answers? Method would be appreciated.

    This will be updated as I go along.
    Spoiler:
    Show
    Question 1. What is the volume of the prism? (2 marks)

    Area of face = 30cm²
    Length of prism = 25cm.

    30cm² x 25cm = 750cm³




    Question 2a. Reflect shape in line X = -1 (2 marks)

    Accept correct reflection.

    Question 2b. Rotate shape 90° anticlockwise. (2 marks)

    Accept correct rotation.




    Question 3. What is wrong with the questionnaire? Give two reasons. (2 marks)
    Attachment 538813
    'Too vague (i.e. not 1-2, 3-4 etc.)' and 'no time frame (i.e. not per week, per month, etc.)' are accepted.

    Why is his maths class not a good sample? (1 mark(?))

    'Too small' and 'may be biased' are accepted,




    Question 4. Simplify. (all of question 4, 6 marks)
    P2 x P5 = P7

    G6 ÷ G4 = G2

    (K3)2 = K6

    10-5mFactorise n2 - 7nn(n-7)




    Question 5. Estimate 892 ÷ 18.9 (2 marks)
    Round to 1 significant figure

    900 ÷ 20 = 45




    Question 6. A teacher is picked at random. 3/5 chance they are female. 36 are males. (3 marks)
    How many teachers are there altogether?

    2/5 of teachers are male. 36 are male.

    2/5 of total = 36
    2 x 18 = 36
    18 x 2 = 90.
    Answer is 90 teachers.




    Question 7(?). Point is the midpoint. Where is the other end?
    Answer is (-3, -2)




    Question 10(?). Can the floor be varnished with 3 tins of 2.5 litre varnish and it is 5 m2 per litre. (5 marks)
    Attachment 538829

    2.5 m x 6 m = 15 m2
    2.5 m x 6 m = 15cm2


    10 m - (2.5 m - 2.5 m) = 5 m
    6 m - 2 m = 4 m

    5 m x 4 m = 20 m2

    15 m2 + 15 m2 + 20 m2 = 50 m2

    5 m2 per litre, 50 m2 ÷ 5 m2 = 10 litres

    2.5 litres per tin, 3 tins, 3 x 2.5 = 7.5 litres.

    Not enough, 7.5 litres is less than 10 litres.

    Answer is 'not enough' with evidence.






    Question 11(?). What percent of his total spending is his rent now?
    Answer is 36%.


    Question 13(?). How many females visited the art gallery?
    66 students went on the trip.

    Males - Bowling - 4
    Females - Bowling - 6
    Total - Bowling - 10

    Males - Art Gallery - 9
    Females - Art Gallery - 11
    Total - Art Gallery - 20

    Males - Skating - 10
    Females - Skating - 26
    Total - Skating - 36

    Males - Total - 23
    Females - Total - 43
    People - Total - 66


    Answer is 11 females.

    Question 14(?).
    Attachment 538769
    Area of square = 10cm x 10cm = 100 cm²
    Area of circle = π5² = 25π cm²
    Area of shaded = Area of square - Area of circle = 100 cm² - 25π cm² = 100 - 25π cm²


    Question 15(?).



    200 x 25% = 50
    200 - 50 = 150

    Last part, answer was 150.




    Question 20(?). Solve X² = 4(X-3)²X² = 4[(X - 3)(X - 3)]X² = 4[X² - 3X - 3X+ 9]X² = 4[X² - 6X + 9]X² = 4X² - 24X + 360 = 4X² - X² - 24X + 360 = 3X² - 24X + 360 = 3[X² - 8x + 12]0 = 3[(X - 6)(X - 2)]X = 6 or X = 2




    Question 21(?). What is the chance of the match being cancelled when it does not rain?
    Attachment 538811
    0.8 x 0.05

    Answer is 0.04.


    Question 22(?). What is the angle?

    Angles in a triangle add up to 180°, base angles in an isosceles are equal.
    180° - 48° - 48° = 84°

    Angle at centre is twice angle at circumference.
    84° ÷ 2 = 42°

    Angles in a triangle add up to 180°, base angles in an isosceles are equal.
    (180° - 42°) ÷ 2 = 69°

    Answer is 69°.




    Question 23(?).
    a + b

    -a + 3b

    ¾(a+b)

    Point S is on both lines and is the point at which the lines intersect.




    Question 24(?).
    Table - 100, 25, 4 (?)


    Question 25.
    Attachment 538759

    (3-√6) ÷ 12
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    (Original post by 34908seikj)
    Probably not. While it still works, they didn't ask you do to it nor is it in the "correct" form.
    Would i get method marks, i did get the correct answer, and wrote it down, but i put the factorised version in the answer box thing.
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    (Original post by junayd1998)
    no
    Done same mistake, do we get 0 for this or 1 mark?
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    From the surds question i've seen.

    ABD = 1/2 x rt2/2 x rt2/2 = 2/8 = 1/4

    ABC = 1/2 x rt3/3 x rt2/2 = rt6/12

    ABD - ABC = 1/4 - rt6/12
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    (Original post by bantaleg)
    For Question 14 i did all that working but put 75 pi as my answer
    You can't do 100-25pi without multiplying out the Pi first. BODMAS.
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    (Original post by natashabeth)
    who thinks maths is cool
    u cant spell maths w/o cool so
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    (Original post by Federerr)
    Does anyone remember how the circle theorem question looked like? If so please could you draw it and show meh
    Name:  13295166_1129867527056891_732756626_n.jpg
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