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Edexcel GCSE Mathematics A Higher Paper 2016 Unofficial Markscheme Watch

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    Wait so..how did everyone find the paper as a whole? Lots of people were complaining about it
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    (Original post by polishboyy)
    Guys i lost 12-15 marks, can i still get an A*
    Probably, but it will be close. So you may get unlucky with high grade boundaries. :/
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    For the estimate one I did 900/19 and got 42 would that still be full marks?
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    does anyone have the full paper? so i can do it
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    Q25 worth 3 marks
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    What were the two questions where you had to use a compass , one with an angle and one with line
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    (Original post by bethanyjx)
    Wait so..how did everyone find the paper as a whole? Lots of people were complaining about it
    Really easy.
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    last years was
    A* = 155/200
    A = 125/200
    B = 95/200
    C = 65/200
    D = 35/200
    E = 20/200
    If the next exam is hard:
    A* - 157/200
    A - 128/200
    B - 94/200
    C - 66/200
    IF the next exam is EASY then it would be:
    A* - 160/200
    A - 129/200
    B - 98/200
    C - 69/200
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    Are these questions below foundation or higher? ?




    (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.

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

    G6 ÷ G4 = G2

    (K3)2 = K6

    10-5m

    Factorise 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(?).

    Compare median, interquartile range and range.


    200 x 25% = 50
    200 - 50 = 150

    Last part, answer was 150.




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

    7x108




    Question 17(?).

    x = -0.4 or x = 4.4
    x = -1.1 or x = 5.1
    x = -1.7 or x = 4.7




    Question 18(?).
    7/5

    2 4/5

    4/5




    Question 19(?).
    x < 7




    Question 20(?). Solve X² = 4(X-3)²
    X² = 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 HateOCR)
    I got 5x+20y=T
    me too i think. I thought that was so generous for 3 marks
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    (Original post by Federerr)
    I got pictures of the paper. I stole one from a empty desk lol.
    Can you put the amounts of marks for each question up please ?!
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    (Original post by Federerr)
    I got pictures of the paper. I stole one from a empty desk lol.
    If this is true, post the amount of marks for each question please?
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    I got 6 and 2 for this q...? :/
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    (Original post by 34908seikj)
    no, it would be 25(4-pi)
    nooo arghh
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    Name:  13295086_1129903230386654_206252278_n.jpg
Views: 91
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    (Original post by IDEKOKAY)
    What was the method to find out the answer for the last question about the area of the shaded area????
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    (Original post by bethanyjx)
    Wait so..how did everyone find the paper as a whole? Lots of people were complaining about it
    I found it stupidely easy that i made so many mistakes. i shouldnt have been very confident
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    (Original post by IDEKOKAY)
    What was the method to find out the answer for the last question about the area of the shaded area????
    The large triangle was 1/2*√2/2*√2/2 = 2/8 = 1/4

    The small triangle was 1/2*√3/3*√2/2= √6/12

    Large triangle - Small triangle = gray area

    1/4 - √6/12 is equivalent to (3 - √6)/12
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    Could anyone sketch the circle theorems question with a solution? Cheers
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    I got 39/90 for the fraction one ok im so ppppppppppppppsssed
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    (Original post by keepyourapology)
    the percentage question was 36%.
    the number of females were 11.
    the shaded area in a square was 100-25TT = 25(4-TT).
    does it matter if it is a factorized answer or not????
 
 
 
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