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# Edexcel GCSE Mathematics A Higher Paper 2016 Unofficial Markscheme Watch

1. I got x=6 and x=2 for the equation one
2. Question 11 was 3 marks
3. [QUOTE=Jesnazzy;65199229]
(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:
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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 (3). 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

question 11 with the 36% was 3 marks

I was pretty sure question 21 asked for the prob that it won't rain and it won't be cancelled - so the answer would be 0.76.

Who agrees?
4. (Original post by 34908seikj)
You didn't work anything out...
I wrote down

Last month : £800
This month : £800
Rent last month : 30%
Rent this month : 30% + 20% = 50%

I know its wrong but how many marks?
5. (Original post by jamesM22)
I wrote down

Last month : £800
This month : £800
Rent last month : 30%
Rent this month : 30% + 20% = 50%
I know its wrong but how many marks?
0, you didn't do anything relevant to the correct solution, you MIGHT, but I doubt it!
6. I got 36% for Ali's rent question
7. [QUOTE=theone97;65199685]
(Original post by Jesnazzy)

I was pretty sure question 21 asked for the prob that it won't rain and it won't be cancelled - so the answer would be 0.76.

Who agrees?
This is what I think but I can't remember the question so it's up for debate I guess.
8. For q.21 if I did the entire question as "x" over 100 and I came out with 4/1000 which is equal to the correct answer , will I still get all the marks?
9. (Original post by iMacJack)
If anyone is struggling with a question, tell me the details of the question and I'll provide an answer for you to stop ye debating (hopefully)

Posted from TSR Mobile
No ask me the question because GCSE maths is piss
11. [QUOTE=theone97;65199685]
(Original post by Jesnazzy)

I was pretty sure question 21 asked for the prob that it won't rain and it won't be cancelled - so the answer would be 0.76.

Who agrees?
No, it was definitely the probability that it won't rain and the game IS cancelled
12. (Original post by MrJamerJamer)
For q.21 if I did the entire question as "x" over 100 and I came out with 4/1000 which is equal to the correct answer , will I still get all the marks?
I don't think you would as even as a fraction, it's not in it's simplest form.
13. [QUOTE=34908seikj;65199741]
(Original post by theone97)

This is what I think but I can't remember the question so it's up for debate I guess.
It asked for the probability if it doesn't rain and the match is still cancelled
14. There was one question towards the end that had y is inversely proportionate to 1/X^2 give values for y when X is 1,2,5 and 10. It also told us 10 = 1
15. Can you all rep me a nd follow me thanks!!
16. [QUOTE=34908seikj;65199741]
(Original post by theone97)

This is what I think but I can't remember the question so it's up for debate I guess.
I'm pretty sure I remember it saying it didn't rain and was still canceled, but i'm not 100%.
17. (Original post by Bengilbert6)
There was one question towards the end that had y is inversely proportionate to 1/X^2 give values for y when X is 1,2,5 and 10. It also told us 10 = 1
Yes the constant (k) = 100
18. (Original post by 34908seikj)
0, you didn't do anything relevant to the correct solution, you MIGHT, but I doubt it!
Standard form question, I stupidly X them and got 17.5 X 10^9 and then 1.75 X 10^8. Again no marks?
19. (Original post by pinkgrapefruitj)
I wrote 100 - 25Π in my workings but my final answer was 75Π, will i still get the marks?
Also what was the inequalities solving question???
I think it was something like 3x -4 < 17
20. (Original post by jamesM22)
Standard form question, I stupidly X them and got 17.5 X 10^9 and then 1.75 X 10^8. Again no marks?
It depends how many marks are on the question, you got the x10^8 correct so you might be able to pick up at least one mark.

Updated: May 24, 2017
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