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# Edexcel IGCSE Mathematics A - Paper 3H - 2016 - Unofficial Mark Scheme watch

1. (Original post by Sammy_Arab_KFA)
PAPER 4H Unofficial Mark Scheme:
1) 3n+4
2) 5.4
3) a) 388 (b) 395
4) a) 63 (b) 50 (c) 4 (d) 1
5) a) m to the power of 7 (b) c to the power of 8 (c) a to the power of 15 (d) 10x+22
6) £456
7) 7,-1,2,7, Minimum Parabola
8) a) Enlargement, Scale Factor 2, Centre (1,0) (b) (-7,2) (&,-1) (10,-2) (c) (2,0), (1,0), (2,3)
9) 135
10) 60
11) (a) 97,000,000 (b) 1.4x10 to the power of 8 (c) 1.08x10 to the power of 9 (d) K=11
12) (a) 5.2 (b) 5
13) (a) M=0.25xp to the power of 3 (b) 31.25
14) x+5/2x+1
15) (a) 8x-1/15 (b) 2a3e2 (c) y=4.8
16) (a) 6/20, 4/20, 9/19, 6/19, 4/19, 10/19, 5/19, 4/19, 10/19, 6/19, 3/19 (b) 3/95 (c) 9/38
17) (a) 3 (b) 7 (c) x+5/2 (d) 4 or 1 = x
18) (a) 15 (b) 0.48 =12/25 Frequency density = frequency / width of interval
19) -5+12 Square Root (18)
20) Pi(300+100Square Root 2) = A
21) (a) In order from left to right, then down: (Set Theory)
4, 4, 6,
. 5,
6, . 2,
. 3
(b) 9/64
22) (a) MN = 2q-4p (b) PR = 0.5p+q (c) QR = 0.5p, OP = p
________________________________ ____________________
Are you sure 21b was 9/64? Is it not 5/9 because 5 people have 3 (L,D and T) and 9 people have at least 2 (L and D I think).

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2. (Original post by Sammy_Arab_KFA)
PAPER 4H Unofficial Mark Scheme:
1) 3n+4
2) 5.4
3) a) 388 (b) 395
4) a) 63 (b) 50 (c) 4 (d) 1
5) a) m to the power of 7 (b) c to the power of 8 (c) a to the power of 15 (d) 10x+22
6) £456
7) 7,-1,2,7, Minimum Parabola
8) a) Enlargement, Scale Factor 2, Centre (1,0) (b) (-7,2) (&,-1) (10,-2) (c) (2,0), (1,0), (2,3)
9) 135
10) 60
11) (a) 97,000,000 (b) 1.4x10 to the power of 8 (c) 1.08x10 to the power of 9 (d) K=11
12) (a) 5.2 (b) 5
13) (a) M=0.25xp to the power of 3 (b) 31.25
14) x+5/2x+1
15) (a) 8x-1/15 (b) 2a3e2 (c) y=4.8
16) (a) 6/20, 4/20, 9/19, 6/19, 4/19, 10/19, 5/19, 4/19, 10/19, 6/19, 3/19 (b) 3/95 (c) 9/38
17) (a) 3 (b) 7 (c) x+5/2 (d) 4 or 1 = x
18) (a) 15 (b) 0.48 =12/25 Frequency density = frequency / width of interval
19) -5+12 Square Root (18)
20) Pi(300+100Square Root 2) = A
21) (a) In order from left to right, then down: (Set Theory)
4, 4, 6,
. 5,
6, . 2,
. 3
(b) 9/64
22) (a) MN = 2q-4p (b) PR = 0.5p+q (c) QR = 0.5p, OP = p
________________________________ ____________________
Also, you seem to be missing the 2 students who are supposed to be outside the 3 sets in question 21 a. There were 32 students and you have only listed 30.

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3. (Original post by Sammy_Arab_KFA)
PAPER 4H Unofficial Mark Scheme:
1) 3n+4
2) 5.4
3) a) 388 (b) 395
4) a) 63 (b) 50 (c) 4 (d) 1
5) a) m to the power of 7 (b) c to the power of 8 (c) a to the power of 15 (d) 10x+22
6) £456
7) 7,-1,2,7, Minimum Parabola
8) a) Enlargement, Scale Factor 2, Centre (1,0) (b) (-7,2) (&,-1) (10,-2) (c) (2,0), (1,0), (2,3)
9) 135
10) 60
11) (a) 97,000,000 (b) 1.4x10 to the power of 8 (c) 1.08x10 to the power of 9 (d) K=11
12) (a) 5.2 (b) 5
13) (a) M=0.25xp to the power of 3 (b) 31.25
14) x+5/2x+1
15) (a) 8x-1/15 (b) 2a3e2 (c) y=4.8
16) (a) 6/20, 4/20, 9/19, 6/19, 4/19, 10/19, 5/19, 4/19, 10/19, 6/19, 3/19 (b) 3/95 (c) 9/38
17) (a) 3 (b) 7 (c) x+5/2 (d) 4 or 1 = x
18) (a) 15 (b) 0.48 =12/25 Frequency density = frequency / width of interval
19) -5+12 Square Root (18)
20) Pi(300+100Square Root 2) = A
21) (a) In order from left to right, then down: (Set Theory)
4, 4, 6,
. 5,
6, . 2,
. 3
(b) 9/64
22) (a) MN = 2q-4p (b) PR = 0.5p+q (c) QR = 0.5p, OP = p
________________________________ ____________________
are u sure about q 19 it is -5+2 root 18 isnt it ????????
4. (Original post by sgsb0y)
Also, you seem to be missing the 2 students who are supposed to be outside the 3 sets in question 21 a. There were 32 students and you have only listed 30.

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did you get for q 19 -5+2 root 18 ??
5. Have you got answers for paper 4H which we did today in the morning? (9/6/16)

(Original post by _Xenon_)
This is the Unofficial Mark Scheme for the Edexcel IGCSE Mathematics A HIGHER TIER exam today.

MODEL SOLUTIONS

Question 1
Spoiler:
Show
1. Ingredients question.
(a) 750
(b) 30 muffins
Question 2
Spoiler:
Show
2. t is the total number of pens.
x is a small box.
y is a big box.
There are 4 pens in the small boxes and 10 pens in the big ones. I believe the answer was: t = 4x+10y (3 marks)
Question 3
Spoiler:
Show
3. 2.95
Question 4
Spoiler:
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4a.) 6 and 12
4b.) 2, 3, 4, 6, 8, 9, 10, 12, 14
Question 5
Spoiler:
Show
5. Sketch graph.
(-2,11) & (3/4) / (y = 3x - 5)
Question 6
Spoiler:
Show
6. Show that questions...

Example can be provided, just ask.
Question 7
Spoiler:
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7a.) y(3y+2)
Question 8
Spoiler:
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8. 10.7
Question 9
Spoiler:
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9. 52%
Question 10
Spoiler:
Show
10. 10.7 degrees (?)
Question 11
Spoiler:
Show
11. Cumulative frequency (add them up as you go along for the table and for plotting use the upper value and the cumulative frequency to plot point then join with smooth curve.

Interquartile range = UQ-LQ
Question 12
Spoiler:
Show
12. x = 7, y = -3
Question 13
Spoiler:
Show
13. Rearrange in the form ax+by=c
Question 14
Spoiler:
Show
14. Velocity question, differentiate.

V = 6t2-24t+(7 or 9)

2 seconds.
Question 15
Spoiler:
Show
15. 102.4cm
Question 16
Spoiler:
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16. Volume of the vase was 102 cm3.
Working out:
ASF =
LSF =
VSF =
= 24.3cm3 (3 s.f.)
Question 17
Spoiler:
Show
17. x = 8
Question 18
Spoiler:
Show
18. Rearrange.
k = 3m+1 (?)
Question 19
Spoiler:
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19. 63 degrees (circle theorems question)
Question 20
Spoiler:
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20. 1637 spheres
Question 21
Spoiler:
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21. 25/84
Question 22
Spoiler:
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22. 188cm2
6. no it was definitely -5+12 root 18. I got 2 at first but then realised I had it wrong
7. (Original post by Spinal tap)
no it was definitely -5+12 root 18. I got 2 at first but then realised I had it wrong
Yeah, and an easy way to check surds is to just put the first equation in your calculator, note the answer and then put your simplified equation in your calculator and if you get the same result it is right.

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8. (Original post by sgsb0y)
Yeah, and an easy way to check surds is to just put the first equation in your calculator, note the answer and then put your simplified equation in your calculator and if you get the same result it is right.

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and also there is a verify mode on the casio calculators where u can put both sides of the equation in and it tells u if it is true or false. This is how i check most of my answers
9. (Original post by WhiteX)
are u sure about q 19 it is -5+2 root 18 isnt it ????????
note the right answer is 12 root 18
10. you get the whole mark minus one or two depending on where in the working u went wrong
11. Please may i have workings out for 6
12. Do you know which circle theorem came up?
13. Hey, do you have the question paper for 4h??
14. me too. But I think I used correct method so I'll get a few marks.
15. what are the answers to the rest of 7??

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