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Edexcel GCSE Mathematics A Higher Paper 2016 Unofficial Markscheme Watch

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    (Original post by 34908seikj)
    1/3 possibly 2/3
    For 1 question i wrote like 7x10^9/10
    But its actually 7x10^8 bcz that one 10 cancels out with 10^9 but its still same thing if u write in first form ( my own veiw) but would i get full marks for that
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    Anyone got rough grade boundaries?
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    (Original post by blueribbons99)
    was it not 100-25 TT all divided by 4?




    Posted from TSR Mobile
    No - the question asked for the total of all the shaded areas, so it was 100 - 25pi. It was confusing that they asked for it in its simplest form so my top set all thought you had to factorise to get 25(4-pi).
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    (Original post by k1234a)
    you had to find 30% of 800 which was 240
    then because it was 20% rise, his new rent is 120% → 240 * 120% = 288
    so it was 288/800 which cancelled down to 36/100 = 36%
    Or you could just increase 30% by 20%, which is 36% - much easier!!
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    (Original post by G mandem)
    Yeh you'll need like 85 ish to get an A
    It's never been higher than 85 for an A*, so it's not going to be that high for an A
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    Any predictions for the calculator paper???
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    For one of the questions the correct answer was T=5x+20y and I wrote T=20x+5y. Would this get any marks at all (the total number of marks for this question was 3).
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    (Original post by chocolatexx)
    Any predictions for the calculator paper???
    I lot of geometry, I think the last few questions will be sine/cosine area of a segment type suff. Given how little geometry was actually in this paper (like 2 questions?)
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    (Original post by chocolatexx)
    Any predictions for the calculator paper???
    Maths genie have made a predicted paper based on what was on today's paper
    http://www.mathsgenie.co.uk/resources.html
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    (Original post by ca.hardy)
    For one of the questions the correct answer was T=5x+20y and I wrote T=20x+5y. Would this get any marks at all (the total number of marks for this question was 3).
    No, I doubt it, you MAY be given benefit of you doubt or some **** like that, might scrape 1 mark.
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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
    i calculated 73/100. what grade do you think that would be
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    (Original post by hanifah125)
    i calculated 73/100. what grade do you think that would be
    around an A
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    (Original post by hanifah125)
    i calculated 73/100. What grade do you think that would be
    a* - 158/200 (79/100)
    a - 127/200 (64/100)
    b - 99/200 (50/100)
    c - 68/200 (34/100)
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    how many marks do you need to get for an A?
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    Same! I think we got it right, seeing as it asked for Area of cross section which was given X Length which was 25cm2
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    I got 150
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    (Original post by AceThug)
    a* - 158/200 (79/100)
    a - 127/200 (64/100)
    b - 99/200 (50/100)
    c - 68/200 (34/100)
    thank you so much. do you think it is still possible for me to get an a * overall?
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    (Original post by westyarchie)
    was n(n-7) correct ???
    I put (n-7)(n+0) but apparently yours is right
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    (Original post by Kajsajbas)
    I put (n-7)(n+0) but apparently yours is right
    n(n-7) Is correct. Try and expand your solution.
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    (Original post by kiran_madhar121)
    Is there a mark scheme for foundation paper?
    Have you got the paper/questions?
 
 
 
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