Mr M's Edexcel GCSE Linear 1380 Higher Tier Paper 3 Answers June 2011

Scroll to see replies

@M.Malik

You will need about 58-62, as the boundary.

@ScottENGLAND

Edexcel website?

what about over all?? isnt that for one paper... i swear its not 58 or above to get a B???? because last year you needed 103 to get a B overall

(edited 12 years ago)

Reply 1042

ScottENGLAND

Original post by M.Malik

what about over all?? isnt that for one paper... i swear its not 58 or above to get a B???? because last year you needed 103 to get a B overall

if i were you, id be aiming for 60 marks.
itl prob be around 105 for a B, but you should work to make sure you get it!

Reply 1043

M.Malik

yh i am trying to aim for a good 65 and above next paper!!!! thanx btw are u a gcse student too?

Reply 1044

Greensleeves

Original post by ScottENGLAND

does anyone have the nov 2008 non calc mark scheme please :smile:

Not able to upload as file too big.

So....... Can you make sense of this?

Question Working Answer Mark Notes
1 (a) 180÷2 90g 2 M1 180÷2 OR 180÷6×3 oe
A1 cao
(b) 160 × 2.5
400ml
2 M1 160 × 2.5 OR 160÷6×15 OR 160÷2×5 oe
A1 cao
SC: B1 an answer of 399 to 405 inclusive

2 (a) =
9.476841579
2
M1 for …. or 341.28 or 4.86151… or
A1 for 9.47684.....
SC : B1 for 9.476841579… truncated or rounded to at least 1 decimal place

(b)
9.48 1 B1 ft from (a) with at least 4 significant figures

3
or
240 + 24 + 12 + 6 £282 3 B1 for 117.5 or 1.175
M1 for oe
A1 cao
OR
M1 for OR 24 + 12 + 6 oe OR 42
M1(dep) for 240 + “42” OR 240 + 24 + 12 + 6
A1 cao

5540H/4H
Question Working Answer Mark Notes
4 (a) 4x – 12 1 B1 cao
(b) 4t = 18 4.5 2 M1 for subtracting 1 from both sides seen or implied or division of all 3 terms by 4
A1 4.5 oe

5 5, 13, 29, 53, 85, 125 (85) 2 M1 for correct evaluation of at least 3 odd cases OR sequence of 5, (8), 13, (20), 29… seen OR the expression with n = 9 or 11 or 19 or 21 or … substituted but not evaluated
A1 for 85 or 125 or 365 or 445 or … identified

6

122 –
30.9 4

M1 for or 144 seen
M1 for or 113(….) seen
M1 (dep on both previous M1’s) for “ ”- “ ”
A1 30.88 – 31inclusive

7 (a)(i)
(ii)
110
Corresponding angles 2
B1 cao
B1 (dep on B1 in (i)) for corresponding angles or F angles
(b) 180 – 70 – 75 35 2 M1 180 – (180-110) – 75 or 110 - 75
A1 cao

8 (a) 3 plotted correctly 1 B1 to l square
(b) Positive 1 B1 Positive (correlation)
(c) LOBF 1 B1 within guidelines; line goes from between (2,18) and (2,32) to between (16,78) and (16,90)
(d) 62 – 67 1 B1 for 62 – 67 inclusive or ft from a single straight line graph with positive gradient ± 1 square

5540H/4H
Question Working Answer Mark Notes
9
or
3244.80 3 M1 for or 120 or 240 or 3240 or 3120 or 1.04 × 3000 or 2880 or 2760
M1(dep) for (3000+’120’) or 124.8(0) or “3120”×1.04

A1 £3244.8(0)
OR
M2 or
A1 £3244.8(0)
NB : If correct answer seen then ignore subsequent years

10 30 2 M1 finds the middle value or answer an indication of 0, 29, 29.5, 30.5, 31, 31.5, 32 or 10th value oe
A1 cao

5540H/4H
Question Working Answer Mark Notes
11 (a) x –1 0 1 2 3 4 5
y 3 –2 ¬–5 –6 –5 –2 3
3,–6, –5
2

B2 cao all 3
(B1 any 1 or 2 correct)
(b) Quadratic graph
2
B2 for fully correct graph
OR
B1 all 7 points ft on (a) plotted correctly ± 1 square
B1 smooth curve through all 7 of their plotted points depending on at least B1 in (a)

(c) Draw y =
0.3, 3.7 2 B1 for 0.2 – 0.4 or ft from graph ± 1 square
B1 for 3.6 – 3.8 or ft from graph ± 1 square
(SC: If no marks earned then B1 for line y = –3 drawn)
NB: If line at y = -3 will intersect graph more than twice award B1 for one correct value, B2 for all correct values given.

12 (a) Within guide
2
B2 for line at least 2cm long within inner guideline
B1 for line at least 2cm long completely or partially outside inner guidelines but within outer guidelines or line within inner guidelines of length less than 2cm or at least 3 relevant points within inner guidelines or 2 pairs of relevant intersecting arcs within inner guidelines.
NB : Ignore any additional lines or drawings

(b) Within guide 2
B2 for fully correct shape within or touching guidelines
(B1 two correct parallel lines within or touching guidelines allow or two correct semicircles at ends within or touching guidelines allow or correct shape outside guidelines)
NB : Accept dotted lines. Ignore any additional lines or drawings eg. Full circles drawn at ends

5540H/4H
Question Working Answer Mark Notes
13 24 48 72
36 72
72

2

M1 lists at least 1 multiple of 24 and 1 multiple of 36 ( not including 24, 36)
A1 cao
OR
M1 for 2,2,2,3 (prime factors of 24) OR 2,2,3,3 (prime factors of 36) (may be seen in factor tree or in repeated division)
A1 cao

14 (a) 13x + 17 2
M1 for 3×x + 3×4 OR 5×2x + 5×1
A1 cao
(b)
1 B1 cao
(c)
1 B1 cao
(d)
1 B1 cao

15 1 – (0.15+0.05+0.20+0.25) 0.35 2 M1 1 – (0.15+0.05+0.20+0.25) oe
A1 for 0.35 oe

16 BC2 =

22.4cm 4 M1 for (BC2 =) or 400 + 100 or 500 or oe
M1 for or where it is clear that the 20 and 10 have been squared (could be implied by either 400 or 100 seen)
A1 for any answer in 22.36 – 22.4 inclusive
B1 (indep)cm

5540H/4H
Question Working Answer Mark Notes
17
=76

2.375 3 M1 for 1 8 and 2 12 and 3 6 and 4 4 and 5 2 condone one error or sight of 76.
M1(dep on 1st M1) for
A1 for 2.375 or 2.37 or 2.38 or 2.4

18 65% of orig value = £5460
1% of orig value =
Orig value =
£8400 3 M1 65% (of orig value) = £5460 or (100% - 35%) × orig price = 5460 or 0.65 or 65% seen
M1 or
A1 £8400

5540H/4H
Question Working Answer Mark Notes
19 (a)

As given
3

M1 and x 5 OR x(x+5) and x(x+1) condone missing brackets.
M1 OR (can imply first M1)
A1 =95 AG

(b)

or

5.55, –8.55
3
M1 for correct substitution in formula of 2, 6 and ± 95
M1 for reduction to
A1 5.55 to 5.555 inclusive and –8.55 to –8.555 inclusive
OR
M1
M1
A1 5.55 to 5.555 and –8.55 to –8.555
[SC: B1 for one answer correct with or without working]

5540H/4H
Question Working Answer Mark Notes
20 (a) Add on 2 1 B1 ‘even numbers go up in twos’ or ‘even numbers are 2 apart’ oe

(b) 2n + 4 1 B1 2n + 4 oe

(c) 2n + 2n + 2 + 2n + 4= 6n+6
= 6(n +1) 3 M1 for 2n (+) 2n + 2 (+) ‘2n + 4’ or any 3 consecutive even numbers written as expressions; any variable may be used
A1 for “6n + 6”
A1 for “6(n+1)” or stating there is a factor of 6 oe
SC : B1 for n + n + 2 + n + 4

21
= 21.8o

or
QP=

21.8 3 M1
M1 or tan-10.4
A1 21.8o - 21.81º inclusive
OR
[QP]
M1 or
M1 or
A1 21.8o - 21.81º inclusive
SC: B2 for 24.2(237…..) or 0.380(5….)

5540H/4H
Question Working Answer Mark Notes
22

= 1406.25
1406.25 4 M1
M1 (can imply first M1)
A1 (= 2.25)
A1 for 1406.25 or

23 (i)

(ii)

=
= 30.6565 … 9.75

30.7
3 B1 cao
M1 for where 24.4<VUB?24.45 and 9.75?g<9.8 or (= 30.6565…)
A1 for 30.7 or 30.66 or 30.657 or 30.6565 or 30.65654 or better coming from 30.6565384…

5540H/4H
Question Working Answer Mark Notes
24 (a)

905

3

M1 (= 848.2…) or (=56.54...)
M1 (dep) (may be implied)
A1 904 – 905 inclusive

(b)

4.92 3 M1 for
M1 for correct process to reach
oe (= 119.3…) or (implies 1st M1)
A1 4.915-4.925

25
=19.24 19 3 M1 for or or or or
M1 or or 399 (=19.2487…)
A1 for 19

5540H/4H
Question Working Answer Mark Notes
26 (a) 4a + 3b – (2a + b )
2a + 2b
2
M1 ( ) or 4a + 3b – (2a + b ) oe
or an intention to do eg. –2a + b + 4a + 3b
A1 cao

(b) 3a + 3b or 5a + 5b
= 2a + b + 5a + 5b 7a + 6b 3 M1 for oe or oe (may be given in terms of a and b)
M1(indep) for (=3a + 3b) or
(“2a + 2b”) (=5a + 5b)
A1 cao
SC : B2 for 7a + 9b or 7a + 11b

27 ,

, b = 4

4

M1 for ,

M1 for correct method to eliminate either a or b could be implied by or or oe

A1 for b = 4
A1 for oe

(edited 12 years ago)

Reply 1045

Mr M

Study Forum Helper

Original post by louci

oh man ....
so what if i also talked about angles in a straight line and angles in a triangle add up to 180
how many marks will i get for that
do u think???

possibly 2 if it was part of a coherent argument

Reply 1046

innocent4

Original post by JakeYO

Oh fair enough! At least I'll know for the next exam - I just assumed that because it was 'tk' that it was fine - but I get it now, thanks :smile:

won't make the same mistake again hopefully... Also for simultaneous equations, if you show the workings out of how to tackle the question, but you go wrong somewhere - some that makes you get both answers of x and y wrong :| Do you still get marks for working out?

maybe you might because the examiner might see that u know how to do the question but got the numbers wrong :smile:

Don't worry though, just try to do good on the calculator paper so it compensates for any mistakes you might have made!

Reply 1047

Mr M

Study Forum Helper

Original post by Varsh05

It took you 10 minutes to do this test???
You are kidding,right...??

in a couple of years it wouldn't take you much longer than this assuming you are going to continue to study maths

Reply 1048

Mr M

Study Forum Helper

Original post by nm786

Hi, does anyone know if there is a point in revising quadratic nth term sequence?
will it possibly come up on fridays exam?

not in the specification

Reply 1049

Mr M

Study Forum Helper

Original post by goodmorningworld

10. Mass of a prism
38.4 kg (5 marks)

Mr M, I made a counting error, and worked it out as 48.4; but could I still get some method marks? :smile:

yes

Reply 1050

xxzolaxx

Could someone help me and give an example of how to use the sine rule, i'm having a lot of trouble with it. I can do cosine, but I really can't get my head around sine. If you could give me an example that would be great. And also when trying to find a length of a triangle or an angle how do you know when to use sine or cosine???

Reply 1051

Mr M

Study Forum Helper

Original post by nm786

i'm not Mr.M. but, i've always been learnt that you have to join the midpoints. And what paper was it that "the first and last mid point should be joined to make a polygon"- (so, you only joined two mid-points?)
it probably said all the midpoints from the first to the last should be joined. :colondollar:

The first and last points should not be joined but they will ignore it if they were joined.

Reply 1052

Genesis-Red

Original post by Rose.1994

I found it alright, apart from the question about the hemisphere and cone which I completely messed up and the surds. I also lost a couple of marks on the density question for not reading it properly

I didn't find it too difficult, but i totally messed up the cone and hemisphere one too , :frown:

ran out of time

Reply 1053

M.Malik

MR.M>>>>>> a question to you directly in respect to others...
can you PLEASE tell me if you know what overall mark you need to get a B..

IF YOU DO NOT KNOW PLEASE MAKE A GOOD ESTIMATE FROM LAST YEARS...
THANK YOU

Reply 1054

Peak27

Original post by M.Malik

thanks for your answers.... but i am wondering how many marks would i need to get a B overall??????
please reply asap

Dont take my word for it, i'm a student who did the test lol and it was hard! it has got to be lower than last years 103! Agree?

Reply 1055

Genesis-Red

Original post by xxzolaxx

for the sine rule to find out length of a side you need 1 side and the 2 corresponding angles
if you're trying to work out an angle then you need 1 angle and the 2 corresponding sides.

fot the cosine rule to find out length of a side you need the 2 other sides and the angle between them
if you're trying to work out an angle then you need all 3 sides.

you can use this info to find out what rule you're supposed to use in a qn. :smile:

Reply 1056

Mr M

Study Forum Helper