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UNOFFICIAL MARKSCHEME Edexcel Maths Calculator paper 09/06/2016

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1. (Original post by HateOCR)
it was closer to 3.7. all my friends, teachers agreed with me. if we are all wrong well thats a bummer because itll mean i got 99/100 in the paper
go use a calculator and check then if you dont believe me. you got it wrong so unlcuky
2. FOR one of them I rounded to 3.7 because it was rtechnically closer
3. cheers, so if i scaled it properly, i should be fine?

(Original post by Kajsajbas)
I wrote frequency density I think you had to just to show what you understood the y axis
4. (Original post by JoeHales151)
For question 19, I done the correct formula but I think I put 10 males instead of 11, would I get a mark
Yeah they should both be correct because you can't get that much of a person
5. (Original post by Samii123)
Can anyone tell me what question 21 was asking it's the only question I can't remember and the answer was 29.25 according to the unofficial mark scheme.
it was that one about the bounds i think, i= 5(v-u) or something
7. (Original post by EBeddowes)
cheers, so if i scaled it properly, i should be fine?
Yeah as long as your frequency densities were right
8. (Original post by Purpleunicorn197)
Reps are not necessary but would be appreciated

It would be really useful if you could remember the question numbers
1. Order numbers correctly and include a key
b) 9/20=
0.45
2a. 5a*2b*3c =
30abc
b. Factorise fully 3y +6 =
3(y+2)
c. Expand x(x-3)=
x^2-3x
3.
x=9.25
4. Smallest packet was best value for money because it was cheapest per bag of crisps
5. 4 times as many red than green: There were 0.4 blue and 0.15 yellow.
0.4+0.15+4x+x=1
0.55+5x=1
5x=0.45
x=0.09
4x=0.36
Green- 0.09 Red- 0.36
6a. 20.3
b. 68.04kg
c. 2.61m
7. 3.8
8a. 4:3
b. 480 pixels
9.x= 124 degrees
10. 7.92
11.£42.29
12. x=144 degrees
13.
-2 -1 0 1 2
-1 3 1 -1 3
Draw curve
14. 3 Bars
15. No, because 7766.22 was greater than 7500 pounds
16. 128g
b.11g
17. 30.1
18. 10a^5b^4
b. y= 5p^2-x
19.11 males
20. x= 0.29 or x= -2.29
21. 29.25
22. F.d- 1.6, 3.2, 2.4, 1.8, 0.3
23.28.9
24a. -1/3x+4
b. 2x/(x+1)(x-1)
25. 80.4
Do you have any of the marks per question so we can add up our predicted scores?
9. What were the marks awarded for each question roughly?
10. What grade boundary would a c be in.
11. (Original post by JoeHales151)
For question 19, I done the correct formula but I think I put 10 males instead of 11, would I get a mark
Honestly if you look at a stratified sample past paper question then the mark scheme is quite lenient usually. They give the correct answer in mark scheme and they USUALLY allow you to be 1 higher or 1 lower.

This is because sometimes what you work out, if you add all of the values up including your one, the total may be off by 1, so sometimes 10.8 should be 10.

But they are lenient usually, so I think 10-11 will be allowed.

Good luck!
12. Guys is it ok if i got 80.8 for the last qutiones
13. (Original post by HateOCR)
it was closer to 3.7. all my friends, teachers agreed with me. if we are all wrong well thats a bummer because itll mean i got 99/100 in the paper
the difference is bigger as when numbers increase the difference increases.
eg. 2 cubed = 8
4 cubed = 64
8 cubed = 512

14. (Original post by HateOCR)
I think ur answer will not be accepted because it was 10.8 recurring, since its higher than 0.5 then your ment to round up. if ur examiner is kind ull get the mark tho
Damn. You see I thought when it came to people you can't round another person as you don't have an extra 0.2 of a person, so I rounded it down :/

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15. (Original post by ScrewTheExams)
It's 3.8, check any past paper question and read the mark scheme.

You need to find the solution of x to 1 dp, not which dp is closer to it.

3.75 is not x, it's too small, so the solution of x is after 3.75 so it rounds to 3.8

Good luck with the 99 or 98 though!
is it ok if i got 80.8 for the last qutiones
16. What do you think the grade boundaries for an A* will be?
17. Is it just me that got 40.0 for the last one?
18. (Original post by Purpleunicorn197)
Reps are not necessary but would be appreciated

It would be really useful if you could remember the question numbers
1. Order numbers correctly and include a key
b) 9/20=
0.45
2a. 5a*2b*3c =
30abc
b. Factorise fully 3y +6 =
3(y+2)
c. Expand x(x-3)=
x^2-3x
3.
x=9.25
4. Smallest packet was best value for money because it was cheapest per bag of crisps
5. 4 times as many red than green: There were 0.4 blue and 0.15 yellow.
0.4+0.15+4x+x=1
0.55+5x=1
5x=0.45
x=0.09
4x=0.36
Green- 0.09 Red- 0.36
6a. 20.3
b. 68.04kg
c. 2.61m
7. 3.8
8a. 4:3
b. 480 pixels
9.x= 124 degrees
10. 7.92
11.£42.29
12. x=144 degrees
13.
-2 -1 0 1 2
-1 3 1 -1 3
Draw curve
14. 3 Bars
15. No, because 7766.22 was greater than 7500 pounds
16. 128g
b.11g
17. 30.1
18. 10a^5b^4
b. y= 5p^2-x
19.11 males
20. x= 0.29 or x= -2.29
21. 29.25
22. F.d- 1.6, 3.2, 2.4, 1.8, 0.3
23.28.9
24a. -1/3x+4
b. 2x/(x+1)(x-1)
25. 80.4
THANKS SO MUCH!!
damn i lost bare marks man
19. (Original post by Barnewell)
80.4
or 80.1 we are having a school debate, you couldd say a maths debate
If you said 80.4 you would be correct, I originally got 80.1 but I released I had rounded my calculations during my working out, which you should not do.
20. (Original post by LilyKitty)
I don't think so because the angle has to be between the two sides (7 &8) for the formula of triangle area to work and x was another angle so you had to do cosine to find another side and then sine rule too before you could get x. Not sure though. xx
Surely it would be 1/2 ab sinC as the area was 18 and you rearrange to find the angle which is 40.0

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