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# Edexcel GCSE Mathematics A Higher Paper 2016 Unofficial Markscheme

1. Does anyone remember how the circle theorem question looked like? If so please could you draw it and show meh
2. (Original post by natashabeth)
This is all incorrect do NOT TRUST THIS PAGE WARNINGGGGG
Why
3. (Original post by ad4m)
difficult to say considering the fact that only 1 paper has been sat. however, if paper 2 is similar then 160-165 for A*

Posted from TSR Mobile
**** i need an at least an A on this paper to do maths A-level
4. According to this I've lost only 5 marks so far
5. (Original post by Anonymous20000)
I factorised the letter one (t=5x+20y) will i still get the mark if thats right??
Probably not. While it still works, they didn't ask you do to it nor is it in the "correct" form.
6. (Original post by kennethdcharles)
According to this I've lost only 5 marks so far
I've dropped 8 cuz I'm stoooopid feels bad man.
7. You know for the crisps question where is says why is asking students at a school not a good sample.

Would this answer be ok:

It is not a good sample because asking students at a school is not representative of all people.

??
8. My predictions for grade boundaries (I've tried to look at the jumps between 2010-2015)

A*- highest the boundaries could go: 165-168/200
A*-lowest grade boundaries could go: 160-162/200

It is unlikely they will keep it around 155 like last year my personal thought because the test was doable

A-highest the boundaries could go: 133-136/200
A- lowest the boundaries could go : 128-132/200

The boundaries will usually go down by 30-35 for each grade
9. the last question asked for the exact figure tho....?
10. Yes the sample is too small and bad representation
(Original post by junayd1998)
You know for the crisps question where is says why is asking students at a school not a good sample.

Would this answer be ok:

It is not a good sample because asking students at a school is not representative of all people.

??
11. another part of Q3 was: the sample was taken from students. Why is this a bad sample group?
i put because it would not represent everyone as it is an unvaried sample group.
12. (Original post by Xxxibgdrgn)
the last question asked for the exact figure tho....?
I think it means it should be completely accurate so you have to leave it as a surd
13. (Original post by Xxxibgdrgn)
the last question asked for the exact figure tho....?
Exact means surds.
14. For Question 14 i did all that working but put 75 pi as my answer
(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.

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

10-5mFactorise 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(?).

200 x 25% = 50
200 - 50 = 150

Last part, answer was 150.

Question 20(?). Solve X² = 4(X-3)²X² = 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
15. (Original post by 34908seikj)
Probably not. While it still works, they didn't ask you do to it nor is it in the "correct" form.
Would i get method marks, i did get the correct answer, and wrote it down, but i put the factorised version in the answer box thing.
16. (Original post by junayd1998)
no
Done same mistake, do we get 0 for this or 1 mark?
17. From the surds question i've seen.

ABD = 1/2 x rt2/2 x rt2/2 = 2/8 = 1/4

ABC = 1/2 x rt3/3 x rt2/2 = rt6/12

ABD - ABC = 1/4 - rt6/12
18. (Original post by bantaleg)
For Question 14 i did all that working but put 75 pi as my answer
You can't do 100-25pi without multiplying out the Pi first. BODMAS.
19. (Original post by natashabeth)
who thinks maths is cool
u cant spell maths w/o cool so
20. (Original post by Federerr)
Does anyone remember how the circle theorem question looked like? If so please could you draw it and show meh

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