Edexcel GCSE Mathematics A Higher Paper 2016 Unofficial Markscheme

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    I think I got around 57-58 marks what would that be roughly? and do you think that the grade boundaries will be lower because people have found this hard?
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    (Original post by Starface)
    Since it didnt ask for it in its simplest form, do you guys reckon that 1/4 - root6/12 is fine for the answer to the last question as it is still an exact equivalent to 3-root6/12 ?
    I put that but im not sure if it will be accepted, probably not )':.
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    Do you know the marks for Q8 and onwards?
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    (Original post by Starface)
    Nah you'll lose a mark because 100-25pi isn't equivalent to 25 - 5pi. You took the correct answer and turned it into an incorrect one D:
    Whoops, that's a good point. I didn't realise he didn't factor it out.
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    FFS, I calculated to get 66 marks, I had lost very EASY marks, hopefully I can still get an A.
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    (Original post by luke.brown1999)
    I think I got around 57-58 marks what would that be roughly? and do you think that the grade boundaries will be lower because people have found this hard?
    Solid B.
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    Anyone know what grade 74 might be?
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    (Original post by ILoveMaths69)
    Can you put the value of marks for each question please?
    Done that.
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    (Original post by itsdatboy)
    For the first question, it was rotate clockwise 90*, I vividly remember it. However, I messed up on the reflection of x=-1 and reflected it on the other line, god dammit.
    I remember it being clockwise aswell.
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    (Original post by luke.brown1999)
    I think I got around 57-58 marks what would that be roughly? and do you think that the grade boundaries will be lower because people have found this hard?
    They will be higher. and a grade C
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    (Original post by 34908seikj)
    This is incorrect


    it was (3-√6)/12
    Ohh right oki
    My maths teacher told me the answer afterwards maybe i just recalled it wrong sorry about thatt
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    Any guesses for the grade boundries this year?
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    (Original post by Stoasts)
    Do you know the marks for Q8 and onwards?
    They've been added.
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    (Original post by MrJamerJamer)
    I remember it being clockwise aswell.
    Im sure it said anticlockwise
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    (Original post by MrJamerJamer)
    If I got around 70 on this paper what would I need for a "a/a*"?

    These are ROUGH grade boundaries;
    A* ~ 78/100
    A ~ 63/100
    B ~ 48/100
    C ~ 33/100
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    Foundation paper thread?
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    (Original post by tamanna___)
    Im sure it said anticlockwise
    Anti-clockwise by 90 degrees.
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    (Original post by tamanna___)
    Im sure it said anticlockwise
    It said 90 degress anticlockwise centre (0,1) i think?
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    (Original post by bethanyjx)
    I think I got around 84..I was really really hoping for an A* so let's hope this next paper is promising :-)
    how many marks do you think i will get for the circle theorem question for saying .... the tangent meets the cirlce at 90 degrees - that theorem and then i said it was an isoceles so the two angles are equal but then because couldn't find anymore reasons i just worked it out really quickly at the end showing all working but not giving any reasons and i put 69 degrees
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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.

    Attachment 538937




    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)

    10-5m

    Factorise n2 - 7n

    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
    2(b) was rotate 180 at 0,1
 
 
 
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