You needed to subtract 21 from 90. Therefore, answer is 69 degrees.(Original post by magicstars1233)
the circle theroms one was 90 degrees definatley
Alternatively it was (ironically) alternate segment theorem = 69.
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Edexcel GCSE Mathematics A Higher Paper 2016 Unofficial Markscheme

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 2041
 27052016 12:50
Last edited by DrPeter; 27052016 at 12:54. 
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 2042
 27052016 12:58
Thanks for the marksheme. Do you know the grade boundaries for June 2016? If you do know please can you send as quick as possible.

 Follow
 2043
 27052016 12:58
Sorry, how can you be predicted 'A' and score just 51? I scored 4953 and me 'C''B' prediction.
Did you have really bad day?
I would imagine you mist do 100% on the calculator one to get 'A'x
QUOTE=SlippyG08;65228901]Someone plzzz help me!!! Im predicted an A but looking at this paper i've only got 51 marks. How many marks do i have to get in the calculator paper just to get an A overall?[/QUOTE] 
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 2044
 27052016 13:01
(Original post by 11NSHERIN)
Thanks for the marksheme. Do you know the grade boundaries for June 2016? If you do know please can you send as quick as possible. 
 Follow
 2045
 27052016 13:07
(Original post by DrPeter)
Noone knows, not even the examination board !! 
 Follow
 2046
 27052016 13:14
(Original post by 11NSHERIN)
But would it be similar to the June 2015 or go up? 
 Follow
 2047
 27052016 13:15
im retarded i thought that 0.8 * 0.05 was 0.400. because i added a 0 to make 0.80 as it was 80%. i dont get how the answer is 0.04
Post rating:1 
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 2048
 27052016 13:33
(Original post by 11NSHERIN)
But would it be similar to the June 2015 or go up?
You should only have one aim and that is to get (or get as close as you can to) 100% in the next paper !!
Good luck 
 Follow
 2049
 27052016 13:37
(Original post by ahhaah)
im retarded i thought that 0.8 * 0.05 was 0.400. because i added a 0 to make 0.80 as it was 80%. i dont get how the answer is 0.04
0.05 of 0.8 = 0.04 
 Follow
 2050
 27052016 13:40
Do you have the marking scheme for foundation?
(Original post by LogicalFallacy)
This is the completed mark scheme for the 26/05/2016 mathematics noncalculator paper.
If there are any mistakes, please tell me.
Reps would be appreciated, but are not necessary.Spoiler:ShowQuestion 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 12, 34 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.
P^{2} x P^{5 }= P^{7} (1 mark)
G^{6 }÷ G^{4 }= G^{2 } (1 mark)
(K^{3})^{2} = K^{6 }(1 mark)
Expand and simplify 3(m+4)  2(m+1) (1 mark)
105m
Factorise n^{2}  7n (2 marks)
n(n7)
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 m^{2} per litre. (5 marks)
Attachment 538829
2.5 m x 6 m = 15 m^{2}
2.5 m x 6 m = 15cm^{2}
10 m  (2.5 m  2.5 m) = 5 m
6 m  2 m = 4 m
5 m x 4 m = 20 m^{2}
15 m^{2} + 15 m^{2} + 20 m^{2} = 50 m^{2}
5 m^{2} per litre, 50 m^{2 }÷ 5 m^{2} = 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)
Answer is 60.
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)
Answer is 36%.
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 10^{6}) ÷ (5 x 10^{3}) (2 marks)
7x10^{8}
Question 17a. Solve 3x  5 < 16 (2 marks)
x < 7
Question 17b. Solve (11w) ÷ 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°
Answer is 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
Answer is 0.04.
Question 22. Solve X² = 4(X3)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
Worked solutions: http://mrkibria.weebly.com/uploads/7..._mr_kibria.pdf(Original post by LogicalFallacy)
This is the completed mark scheme for the 26/05/2016 mathematics noncalculator paper.
If there are any mistakes, please tell me.
Reps would be appreciated, but are not necessary.Spoiler:ShowQuestion 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 12, 34 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.
P^{2} x P^{5 }= P^{7} (1 mark)
G^{6 }÷ G^{4 }= G^{2 } (1 mark)
(K^{3})^{2} = K^{6 }(1 mark)
Expand and simplify 3(m+4)  2(m+1) (1 mark)
105m
Factorise n^{2}  7n (2 marks)
n(n7)
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 m^{2} per litre. (5 marks)
Attachment 538829
2.5 m x 6 m = 15 m^{2}
2.5 m x 6 m = 15cm^{2}
10 m  (2.5 m  2.5 m) = 5 m
6 m  2 m = 4 m
5 m x 4 m = 20 m^{2}
15 m^{2} + 15 m^{2} + 20 m^{2} = 50 m^{2}
5 m^{2} per litre, 50 m^{2 }÷ 5 m^{2} = 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)
Answer is 60.
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)
Answer is 36%.
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 10^{6}) ÷ (5 x 10^{3}) (2 marks)
7x10^{8}
Question 17a. Solve 3x  5 < 16 (2 marks)
x < 7
Question 17b. Solve (11w) ÷ 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°
Answer is 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
Answer is 0.04.
Question 22. Solve X² = 4(X3)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
Worked solutions: http://mrkibria.weebly.com/uploads/7..._mr_kibria.pdf(Original post by Husna. A)
I've got a question for foundation paper(Original post by LogicalFallacy)
This is the completed mark scheme for the 26/05/2016 mathematics noncalculator paper.
If there are any mistakes, please tell me.
Reps would be appreciated, but are not necessary.Spoiler:ShowQuestion 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 12, 34 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.
P^{2} x P^{5 }= P^{7} (1 mark)
G^{6 }÷ G^{4 }= G^{2 } (1 mark)
(K^{3})^{2} = K^{6 }(1 mark)
Expand and simplify 3(m+4)  2(m+1) (1 mark)
105m
Factorise n^{2}  7n (2 marks)
n(n7)
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 m^{2} per litre. (5 marks)
Attachment 538829
2.5 m x 6 m = 15 m^{2}
2.5 m x 6 m = 15cm^{2}
10 m  (2.5 m  2.5 m) = 5 m
6 m  2 m = 4 m
5 m x 4 m = 20 m^{2}
15 m^{2} + 15 m^{2} + 20 m^{2} = 50 m^{2}
5 m^{2} per litre, 50 m^{2 }÷ 5 m^{2} = 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)
Answer is 60.
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)
Answer is 36%.
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 10^{6}) ÷ (5 x 10^{3}) (2 marks)
7x10^{8}
Question 17a. Solve 3x  5 < 16 (2 marks)
x < 7
Question 17b. Solve (11w) ÷ 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°
Answer is 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
Answer is 0.04.
Question 22. Solve X² = 4(X3)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
Worked solutions: http://mrkibria.weebly.com/uploads/7..._mr_kibria.pdf 
 Follow
 2051
 27052016 14:05
For the circle one I got 10025pi and then simplified it to 4pi (I did write 10025pi in the answer box with it: how many marks will I get)
Also on the one with the fractions I did it wrote but didn't write it as a mixed number: how many marks will I get?
Also, on the last question I wrote1/4root6/12 (how many marks will I get?
Thanks for making this by the way 
 Follow
 2052
 27052016 14:06
For the circle one I got 10025pi and then simplified it to 4pi (I did write 10025pi in the answer box with it: how many marks will I get)
Also on the one with the fractions I did it wrote but didn't write it as a mixed number: how many marks will I get?
Also, on the last question I wrote1/4root6/12 (how many marks will I get? 
 Follow
 2053
 27052016 14:29
(Original post by 11NSHERIN)
Thanks for the marksheme. Do you know the grade boundaries for June 2016? If you do know please can you send as quick as possible. 
 Follow
 2054
 27052016 14:32
(Original post by Joemill5000)
For the circle one I got 10025pi and then simplified it to 4pi (I did write 10025pi in the answer box with it: how many marks will I get)
Also on the one with the fractions I did it wrote but didn't write it as a mixed number: how many marks will I get?
Also, on the last question I wrote1/4root6/12 (how many marks will I get? 
 Follow
 2055
 27052016 14:33
On this paper i think i got 76 ( i made alot of silly mistakes) so how much fo you think ill need on the next paper fir an A*

 Follow
 2056
 27052016 14:41
(Original post by Mayfate)
I did the same for the circle one! But everyone else seems to think 10025Pi is right. Im confused as i thought it said simplify as low as possible which surely would be 4Pi right ?
Think about BIDMAS
100  25 x 3.14 = 21.5
This is not the same as 4  3.14 !! 
 Follow
 2057
 27052016 14:46
On this paper i think i got 76 ( i made alot of silly mistakes) so how much fo you think i'll need on the next paper for an A*

 Follow
 2058
 27052016 14:47
(Original post by Mayfate)
I did the same for the circle one! But everyone else seems to think 10025Pi is right. Im confused as i thought it said simplify as low as possible which surely would be 4Pi right ? 
 Follow
 2059
 27052016 14:53
(Original post by Joemill5000)
For the circle one I got 10025pi and then simplified it to 4pi (I did write 10025pi in the answer box with it: how many marks will I get)
Also on the one with the fractions I did it wrote but didn't write it as a mixed number: how many marks will I get?
Also, on the last question I wrote1/4root6/12 (how many marks will I get?
1/4√6/12 == Big triangle  small triangle
Where as 3√6/12 is the area of the shaded part. 
 Follow
 2060
 27052016 14:55
(Original post by 34908seikj)
You'd need to have factored out 25, so it was 25(4pi), otherwise you won't get the same answer.
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Updated: January 3, 2017
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