Edexcel GCSE Mathematics A Higher Paper 2016 Unofficial Markscheme

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    Two questions;One, you know for question 2b, I put a point on 3 and looking at your mark scheme, it's on 4. Is mine wrong because I checked over it.Secondly, how many overall marks am I looking for for a C - this is my aim.
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    (Original post by LogicalFallacy)
    This is the completed mark scheme for the 26/05/2016 mathematics non-calculator paper.

    If there are any mistakes, please tell me.

    Reps would be appreciated, but are not necessary.
    Spoiler:
    Show
    Question 1. What is the volume of the prism? (3 marks)

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

    30cm² x 25cm = 750cm³




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

    Attachment 538919

    Accept correct reflection.

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

    Accept correct rotation.

    Rotate at (0, 1)




    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.

    Create a better survey for him to use. (2 marks)

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

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




    Question 4. Simplify.
    P2 x P5 = P7 (1 mark)

    G6 ÷ G4 = G2 (1 mark)

    (K3)2 = K6 (1 mark)

    Expand and simplify 3(m+4) - 2(m+1) (1 mark)

    10-5m

    Factorise n2 - 7n (2 marks)

    n(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. 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 8. Spinner, spins 300 times. (3 marks)

    Answer is 60.




    Question 9. 5 envelopes in small, 20 in large. What is total? (3 marks)

    T = 5x + 20y



    Question 10. Point is the midpoint. Where is the other end? (2 marks)

    Answer is (-3, -2)




    Question 11. How many females visited the art gallery? (4 marks)
    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 12. (3 marks)
    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 13. What percent of his total spending is his rent now? (3 marks)
    Answer is 36%.




    Question 14. Bisector of an angle (2 marks)
    Attachment 538913

    Correct perpendicular bisector of line (2 marks)
    Attachment 538961




    Question 15.

    Compare median, interquartile range and range. (3 marks)


    200 x 25% = 50
    200 - 50 = 150

    Last part, answer was 150. (2 marks)




    Question 16. (3.5 x 106) ÷ (5 x 10-3) (2 marks)

    7x108




    Question 17a. Solve 3x - 5 < 16 (2 marks)

    x < 7

    Question 17b. Solve (11-w) ÷ 4 = 1 + w (3 marks)
    w = 7 ÷ 5




    Question 18.

    2 4/5 (3 marks)

    4/5 (3 marks)





    Question 19.

    x = -0.4 or x = 4.4
    x = -1.1 or x = 5.1 (3 marks)
    x = -1.7 or x = 4.7 (3 marks)




    Question 20. What is the angle? (5 marks)
    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 21. What is the chance of the match being cancelled when it does not rain? (5 marks)
    Attachment 538811
    0.8 x 0.05

    Answer is 0.04.




    Question 22. Solve X² = 4(X-3)² (3 marks)

    X² = 4[(X - 3)(X - 3)]

    X² = 4[X² - 3X - 3X+ 9]

    X² = 4[X² - 6X + 9]

    X² = 4X² - 24X + 36

    0 = 4X² - X² - 24X + 36

    0 = 3X² - 24X + 36

    0 = 3[X² - 8x + 12]

    0 = 3[(X - 6)(X - 2)]

    X = 6 or X = 2




    Question 23. (6 marks)
    a + b

    -a + 3b

    ¾(a+b)

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




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


    Question 25. (3 marks)
    Attachment 538759

    (3-√6) ÷ 12





    Worked solutions: http://mrkibria.weebly.com/uploads/7..._mr_kibria.pdf
    What is question 18
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    (Original post by LogicalFallacy)
    How certain are you? The exam was sat worldwide at the same time. The moderators would have taken it down if this was not the case anyhow.
    Hi moderators don't sit online
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    How?
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    (Original post by jaspreetb)
    Do you guys think that the grade boundaries are going to be low?
    They will be high, the exam was pretty easy.
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    (Original post by jaspreetb)
    Do you guys think that the grade boundaries are going to be low?
    Boy do I hope. Last year it was 25 for a C. Please please let it be like that this year omgg.
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    (Original post by lukecarter)
    The T= x and y I put an 'n' outside the brackets would I get the mark?
    Yes, if you factored it out you'll get all the marks.
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    (Original post by Samantha2009)
    didn't u get it some kids are doing exam tomorrow
    they're not doing the same paper that's not allowed edexcel aren't that clueless they'll sit a different paper
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    (Original post by vrajpatel)
    Q1 750cm^3
    Q2 too vague and no timeframe
    The class is a small sample/biased
    Q3 p^7
    g^2
    k^6
    10-5m
    n(n-7)
    45
    90
    No not enough varnish cos she needs 50cm^2 but has 37.5cm^2
    60
    T=5x+20y
    (-3,-2)
    11 females
    100-25pi
    36%
    I compared median, IQR and range
    150
    7x10^8
    X<7
    7/5
    2 4/5 in mixed fraction form
    4/5
    x=-0.4 and 4.4
    X=-1.1 and 5.1
    X=-1.7 and 4.7
    Angle MST 69
    Probability is 0.04
    X=2&6
    a+b
    -a+3b
    3/4(a+b) for vector
    Point s is on both lines and it is point where they intersect
    100,25,4
    Final questions is (3-root6)/12
    i think its 4.5 not 45 because it was 900/200
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    (Original post by Samantha2009)
    Hi moderators don't sit online
    Nope, LogicalFallacy is correct. Everyone takes the exam at the same time.
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    defo grade A! last year you need 84/100 for an A* and 68/100 for an A!!
    So you'll fine dw
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    (Original post by Samantha2009)
    Hi moderators don't sit online
    Mods have already said that this thread is okay and that people who don't take this exam at the same time as us are doing a similar exam but not the exact same.
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    (Original post by Samantha2009)
    Hi moderators don't sit online
    moderators as in of this site not the examiners who mark our exams
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    What were the grade boundaries last year for a C between both papers?
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    (Original post by Gormenghast)
    i think its 4.5 not 45 because it was 900/200
    No it was something like 895/18.6

    so it will be 900/20 = 45
    • Thread Starter
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    (Original post by Sophiee23)
    Two questions;One, you know for question 2b, I put a point on 3 and looking at your mark scheme, it's on 4. Is mine wrong because I checked over it.Secondly, how many overall marks am I looking for for a C - this is my aim.
    2b was taken from the worked solutions, so was not me. You were most probably correct.
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    Could i please have it
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    (Original post by LogicalFallacy)
    How certain are you? The exam was sat worldwide at the same time. The moderators would have taken it down if this was not the case anyhow.
    hi I'm 100% certain
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    (Original post by Sophiee23)
    Two questions;One, you know for question 2b, I put a point on 3 and looking at your mark scheme, it's on 4. Is mine wrong because I checked over it.Secondly, how many overall marks am I looking for for a C - this is my aim.
    last year c was 65 marks in total so roughly 35-40 in each paper would secure you with a c
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    (Original post by bridges123)
    Could i please have it
    http://mrkibria.weebly.com/uploads/7..._mr_kibria.pdf
 
 
 
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