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# Edexcel GCSE Mathematics A Higher Paper 2016 Unofficial Markscheme

1. (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
2. 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.
3. (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
4. [QUOTE=#1Mathlete;65198115]Daljeet ma boiiiiii

In his flash caah
5. (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.
6. 18b was 14/5 not 24/5
7. 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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8. (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
9. just started that question when I run out if time. Gutted. How can anyone finish all of these questions in 1h 45?

The probability of it not raining in June and the match not being cancelled.only
0.04 doesn't make much sense.[/QUOTE]
10. (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.
11. (Original post by gcseexamz)
2 marks and if you did that on the picture you got both marks
yes boy gimme that high five
12. (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
13. (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.

Question 7(?). Point is the midpoint. Where is the other end?

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?

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

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

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

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°

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!!
14. (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
15. [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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16. (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?

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.
17. do you guys have any ideas , as to what the grade boundaries will be like???
18. (Original post by junayd1998)
yes boy gimme that high five
19. (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
20. I didnt do that well.

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