Edexcel GCSE Mathematics A Higher Paper 2016 Unofficial Markscheme

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    (Original post by 34908seikj)
    Yep I believe it was 0.8*0.95 = 0.76
    it was 0.4 but you lot have remembered what the question was wrong. I dont remember exactly but it was either the combination of rain and not cancelled or no rain and cancelled which would in fact lead to a low propability answer
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    I was very happy with the test until I found the 2 very dumb mistakes I made!

    For the question on teachers, I worked out the number of female teachers (54) and wrote that down in my answer but by chance, along the way I worked out and labelled the total number of teachers as 90. Do you think they will accept it even though I didn't put it as my final answer?

    Also, for the last question, I got to the point when area = 3/4 - (root 6)/12 and then I made a horribly stupid mistake to write area = (36 - (root 6))/12. How many marks will this lose me if it was a 3 mark question? I'm hoping for just 1.
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    (Original post by jamesM22)
    For the circle and square question, I wrote

    10 X 10 = 100CM"2
    Area of circle = PIE R"2
    and then did 100/25
    How many marks do i get?
    2 probably or maybe 1 out of 3
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    [QUOTE=#1Mathlete;65198115]Daljeet ma boiiiiii

    In his flash caah
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    (Original post by theone97)
    I was very happy with the test until I found the 2 very dumb mistakes I made!

    For the question on teachers, I worked out the number of female teachers (54) and wrote that down in my answer but by chance, along the way I worked out and labelled the total number of teachers as 90. Do you think they will accept it even though I didn't put it as my final answer?

    Also, for the last question, I got to the point when area = 3/4 - (root 6)/12 and then I made a horribly stupid mistake to write area = (36 - (root 6))/12. How many marks will this lose me if it was a 3 mark question? I'm hoping for just 1.
    Well 3/4 - (root 6)/12 is wrong, however i presume the method was right so i'd say 1/3.
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    18b was 14/5 not 24/5
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    What did people put for the oil one? I put 53 days.. but I have heard a variety of answers from friends so ;-;

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    (Original post by junayd1998)
    Attachment 538847 Something like this came up this is what I did for that question is that right? And how many marks was this???
    2 marks and if you did that on the picture you got both marks
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    just started that question when I run out if time. Gutted. How can anyone finish all of these questions in 1h 45?

    QUOTE=mrpaper;65197711]Think about it,
    The probability of it not raining in June and the match not being cancelled.only
    0.04 doesn't make much sense.[/QUOTE]
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    (Original post by GeekyThomas)
    What did people put for the oil one? I put 53 days.. but I have heard a variety of answers from friends so ;-;

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    What oil question? It rings a bell but I can't remember it.
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    (Original post by gcseexamz)
    2 marks and if you did that on the picture you got both marks
    yes boy gimme that high five
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    (Original post by GeekyThomas)
    What did people put for the oil one? I put 53 days.. but I have heard a variety of answers from friends so ;-;

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    answer was anything between 45 and 47 ish
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    (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
    argh the only one i got wrong is the 7 x 10*8 i put 0.7 x10*9!! I'm so sad rn!!
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    (Original post by junayd1998)
    Attachment 538847 Something like this came up this is what I did for that question is that right? And how many marks was this???
    I got the same, was 4 marks for both questions. Tell me what people say
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    [QUOTE=bantaleg;65198225]
    (Original post by #1Mathlete)
    Daljeet ma boiiiiii

    In his flash caah
    Our English teacher bet a tenner on harvest moon by ted Hughes for our unseen poem btw


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    (Original post by Gabika1979)
    just started that question when I run out if time. Gutted. How can anyone finish all of these questions in 1h 45?

    QUOTE=mrpaper;65197711]Think about it,
    The probability of it not raining in June and the match not being cancelled.only
    0.04 doesn't make much sense.
    [/QUOTE]

    Finished ~45min- hour, it was a pretty pleasant exam, compared to last years non-calc at least.
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    do you guys have any ideas , as to what the grade boundaries will be like???
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    (Original post by junayd1998)
    yes boy gimme that high five
    well done boy whats your expected grade
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    (Original post by mariale99)
    do you guys have any ideas , as to what the grade boundaries will be like???
    160-165 a*
    130-135 A
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    I didnt do that well.


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