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# Edexcel GCSE Mathematics A Higher Paper 2016 Unofficial Markscheme Watch

1. (Original post by 34908seikj)
1/3 possibly 2/3
For 1 question i wrote like 7x10^9/10
But its actually 7x10^8 bcz that one 10 cancels out with 10^9 but its still same thing if u write in first form ( my own veiw) but would i get full marks for that
2. Anyone got rough grade boundaries?
3. (Original post by blueribbons99)
was it not 100-25 TT all divided by 4?

Posted from TSR Mobile
No - the question asked for the total of all the shaded areas, so it was 100 - 25pi. It was confusing that they asked for it in its simplest form so my top set all thought you had to factorise to get 25(4-pi).
4. (Original post by k1234a)
you had to find 30% of 800 which was 240
then because it was 20% rise, his new rent is 120% → 240 * 120% = 288
so it was 288/800 which cancelled down to 36/100 = 36%
Or you could just increase 30% by 20%, which is 36% - much easier!!
5. (Original post by G mandem)
Yeh you'll need like 85 ish to get an A
It's never been higher than 85 for an A*, so it's not going to be that high for an A
6. Any predictions for the calculator paper???
7. For one of the questions the correct answer was T=5x+20y and I wrote T=20x+5y. Would this get any marks at all (the total number of marks for this question was 3).
8. (Original post by chocolatexx)
Any predictions for the calculator paper???
I lot of geometry, I think the last few questions will be sine/cosine area of a segment type suff. Given how little geometry was actually in this paper (like 2 questions?)
9. (Original post by chocolatexx)
Any predictions for the calculator paper???
Maths genie have made a predicted paper based on what was on today's paper
http://www.mathsgenie.co.uk/resources.html
10. (Original post by ca.hardy)
For one of the questions the correct answer was T=5x+20y and I wrote T=20x+5y. Would this get any marks at all (the total number of marks for this question was 3).
No, I doubt it, you MAY be given benefit of you doubt or some **** like that, might scrape 1 mark.
11. (Original post by LogicalFallacy)
This is the completed mark scheme for the 26/05/2016 mathematics non-calculator paper.

If there are any mistakes, please tell me.

Reps would be appreciated, but are not necessary.
Spoiler:
Show
Question 1. What is the volume of the prism? (3 marks)

Area of face = 30cm²
Length of prism = 25cm.

30cm² x 25cm = 750cm³

Question 2a. Reflect shape in line X = -1 (2 marks)

Attachment 538919

Accept correct reflection.

Question 2b. Rotate shape 90° anticlockwise. (2 marks)

Accept correct rotation.

Rotate at (0, 1)

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.
P2 x P5 = P7 (1 mark)

G6 ÷ G4 = G2 (1 mark)

(K3)2 = K6 (1 mark)

Expand and simplify 3(m+4) - 2(m+1) (1 mark)

10-5m

Factorise n2 - 7n (2 marks)

n(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. 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 8. Spinner, spins 300 times. (3 marks)

Question 9. 5 envelopes in small, 20 in large. What is total? (3 marks)

T = 5x + 20y

Question 10. Point is the midpoint. Where is the other end? (2 marks)

Answer is (-3, -2)

Question 11. How many females visited the art gallery? (4 marks)
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 12. (3 marks)
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 13. What percent of his total spending is his rent now? (3 marks)

Question 14. Bisector of an angle (2 marks)
Attachment 538913

Correct perpendicular bisector of line (2 marks)
Attachment 538961

Question 15.

Compare median, interquartile range and range. (3 marks)

200 x 25% = 50
200 - 50 = 150

Last part, answer was 150. (2 marks)

Question 16. (3.5 x 106) ÷ (5 x 10-3) (2 marks)

7x108

Question 17a. Solve 3x - 5 < 16 (2 marks)

x < 7

Question 17b. Solve (11-w) ÷ 4 = 1 + w (3 marks)
w = 7 ÷ 5

Question 18.

2 4/5 (3 marks)

4/5 (3 marks)

Question 19.

x = -0.4 or x = 4.4
x = -1.1 or x = 5.1 (3 marks)
x = -1.7 or x = 4.7 (3 marks)

Question 20. What is the angle? (5 marks)
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 21. What is the chance of the match being cancelled when it does not rain? (5 marks)
Attachment 538811
0.8 x 0.05

Question 22. Solve X² = 4(X-3)² (3 marks)

X² = 4[(X - 3)(X - 3)]

X² = 4[X² - 3X - 3X+ 9]

X² = 4[X² - 6X + 9]

X² = 4X² - 24X + 36

0 = 4X² - X² - 24X + 36

0 = 3X² - 24X + 36

0 = 3[X² - 8x + 12]

0 = 3[(X - 6)(X - 2)]

X = 6 or X = 2

Question 23. (6 marks)
a + b

-a + 3b

¾(a+b)

Point S is on both lines and is the point at which the lines intersect.

Question 24. (4 marks)
Table - 100, 25, 4

Question 25. (3 marks)
Attachment 538759

(3-√6) ÷ 12

i calculated 73/100. what grade do you think that would be
12. (Original post by hanifah125)
i calculated 73/100. what grade do you think that would be
around an A
13. (Original post by hanifah125)
i calculated 73/100. What grade do you think that would be
a* - 158/200 (79/100)
a - 127/200 (64/100)
b - 99/200 (50/100)
c - 68/200 (34/100)
14. how many marks do you need to get for an A?
15. Same! I think we got it right, seeing as it asked for Area of cross section which was given X Length which was 25cm2
16. I got 150
17. (Original post by AceThug)
a* - 158/200 (79/100)
a - 127/200 (64/100)
b - 99/200 (50/100)
c - 68/200 (34/100)
thank you so much. do you think it is still possible for me to get an a * overall?
18. (Original post by westyarchie)
was n(n-7) correct ???
I put (n-7)(n+0) but apparently yours is right
19. (Original post by Kajsajbas)
I put (n-7)(n+0) but apparently yours is right
n(n-7) Is correct. Try and expand your solution.
20. (Original post by kiran_madhar121)
Is there a mark scheme for foundation paper?
Have you got the paper/questions?

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