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Mark Scheme

The document is a detailed mark scheme for a mathematics examination, outlining the questions, expected answers, marks allocated, and specific guidance for each question. It includes various mathematical concepts such as geometry, algebra, and statistics, with clear indications of how marks can be earned. The structure is organized by question number, with sub-parts and corresponding marks for each part.
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© © All Rights Reserved
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0% found this document useful (0 votes)
5 views22 pages

Mark Scheme

The document is a detailed mark scheme for a mathematics examination, outlining the questions, expected answers, marks allocated, and specific guidance for each question. It includes various mathematical concepts such as geometry, algebra, and statistics, with clear indications of how marks can be earned. The structure is organized by question number, with sub-parts and corresponding marks for each part.
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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- Mark Scheme /

Question Answer Marks AO Element Notes Guidance

1(a) Tangent 1

1(b)(i) final answer 2 M1 for

1(b)(ii) 40 2 B1 for angle OBC = 40°


or angle BOG = 140°

1(b)(iii) 7.68 or 7.679 to 7.680.... 2 FT their (b)(ii) and (b)(i)

M1 for

1(c)(i) Angle [between] tangent [and] 1


radius

1(c)(ii) B1 for 180 – 140 or 90 – their 3


(b)(ii)

M1 for
oe
A1 for [BC =] 13.109[...]
- Mark Scheme /

Question Answer Marks AO Element Notes Guidance

1(c)(iii) 6.11 or 6.112 to 6.114 3 M1 for [OB 2 =] 13.112 +


112
A1 for 17.1 or 17.11 or
17.112 to 17.114
OR

M1 for oe

A1 for 17.1 or 17.11... or


17.112 to 17.113

2(a) Pentagon 1

2(b) 12 2 B1 for 10 to 14

2(c)(i) Translation 2 B1 for each

2(c)(ii) Rotation 3 B1 for each


[centre] (0, 0) oe
180°

2(c)(iii) Enlargement 3 B1 for each


[centre] (4, 2)
[scale factor] 0.5 oe
- Mark Scheme /

Question Answer Marks AO Element Notes Guidance

2(d) Correct reflection 2 B1 for a correct reflection


(−2, −2), (−1, −4), (−2, −6), (−4, in x = 0 or in y = k k ≠
−6) (−6, −4) 0
or for 4 correct points

3(a) 5.83 or 5.832 to 5.833 5 B2 for sector angle = 210


soi
or M1 for
oe

M2 for

oe
or M1 for

oe isw

3(b) 1.21 or 1.208… 3 M2 for

oe
or M1 for

oe isw
- Mark Scheme /

Question Answer Marks AO Element Notes Guidance

3(c)(i) 4[.00...] 3 M2 for

oe

or M1 for

or

or for
oe

3(c)(ii) 2.20704 3 M2 for


77.44 × 1.5 × 19 ÷ 1000
oe
or M1 for figs 2207[04]
or figs 221 seen
or [vol =] 77.44 × 1.5

4(a) 4.79 or 4.788 to 4.789 3


M2 for oe

or M1 for
oe

If 0 scored SC1 for


answer 3.8[0…]
- Mark Scheme /

Question Answer Marks AO Element Notes Guidance

4(b)(i) 8.7[0] or 8.702 to 8.704 3 M2 for


(300 − 230) ÷ (1.62 )

or M1 for ×1.62 × h

4(b)(ii) 6.4 3 M2 for

oe

or M1 for sf

or oe

or for

5(a) Similar 1

5(b) 4 2
M1 for oe or
better
If 0 scored SC1 for
answer 3.5

5(c)(i) 6.7265 or 6.73 or 6.726 to 6.727 2 M1 for scale factor 22 or

oe soi
- Mark Scheme /

Question Answer Marks AO Element Notes Guidance

5(c)(ii) 13.453 or 13.5 or 13.45 to 13.46 1 FT their (c)(i) × 2

6(a) 750 1

6(b) 4.7 cao 3 B2 for 4.658 to 4.66 or


M2 for
or M1 for 11π r 2 = their
(a)

6(c) 6 2
M1 for 23 or oe seen

or for π × (2× their (b))2


× 22

7(a) 1 Accept
oe

or

7(b)(i) 3
M2 for oe M1 for
oe
or
or
A1 for 11.59...

7(b)(ii)A 72.8 or 72.9 or 72.82 to 72.89… 2 M1 for

7(b)(ii)B 12.1 or 12.06 to 12.08 2 M1 for [6 +] their


(b)(ii)(A) ÷ 12 oe
- Mark Scheme /

Question Answer Marks AO Element Notes Guidance

7(c) 806 or 807 or 805.9 to 807.4 3 B2 for 402.9… to


403.7
OR
M2 for
e o

or M1 for

oe

8(a) 7.06 or 7.058… or 7.059 3 M2 for

oe
OR
M1 for

oe
A1 = 49.8...

8(b)(i) 97 1
- Mark Scheme /

Question Answer Marks AO Element Notes Guidance

8(b)(ii) 15.3[0…] 3 M2 for

or M1 for

oe

8(c) 72.8 to 72.81… 3 M2 for

oe
or M1 for

oe
or

oe
or M1 for height =
oe

9(a) Angle [in] semi-circle [is 90] 1

9(b)(i) 67.4 or 67.38….. 2


M1 for or
better
- Mark Scheme /

Question Answer Marks AO Element Notes Guidance

9(b)(ii) 2 M1 for

9(b)(iii) 480 2 M1 for 0.5 × 20 × 48 or


better

9(b)(iv) 582 or 581.8 to 582.0 3 M1 for

or
better
M1 for their 338 – their
(b)(iii)

10(a)(i) 42.8 or 42.79 … nfww 4 M1 for mid-values soi


M1 for Σ fm where m is
any value in interval
including boundaries
M1 (dep on second M1)
for their Σ fm ÷ 120

10(a)(ii) Blocks of height 1.8 4.4 8 2.1 with 4 B1 for each correct
correct widths block
If B0, SC1 for correct
frequency densities
seen
- Mark Scheme /

Question Answer Marks AO Element Notes Guidance

10(b) Valid general comment about 1 e.g. [On average],


distributions shoppers spend less time
shopping on Wednesday
oe

11(a) B1 for range = 7 6


B1 for mode = 21
B2 for median = 22.5 M1 for evidence of
middle value
M1 for use of Σ x ÷ 14
B2 for mean = 22.7 or 22.71…

11(b) 1
oe

12(a) 16 1

12(b) 50 1

12(c) 2 FT their (b) for 1 or 2


oe
marks

B1 for ,k>4

or , k < 50

12(d) 19 1

13(a)(i) –a + 2c 1
- Mark Scheme /

Question Answer Marks AO Element Notes Guidance

13(a)(ii) 1
or oe FT in
simplest form

13(a)(iii) 1
or oe

13(a)(iv) 2 M1 for a correct


or oe
unsimplified route

13(b) 4 1

14(a) −3 1

14(b) 2
oe M1 for soi

14(c) final answer 2 M1 for


isw

14(d) 2 M1 for a correct first step


oe final answer
,
or
- Mark Scheme /

Question Answer Marks AO Element Notes Guidance

14(e) 3 M1 for
final answer oe
isw
B1 for common
denominator

14(f)(i) M1 for 3

B1 for
A1 for
with no errors and must
oe show
leading to with no omissions after
this
- Mark Scheme /

Question Answer Marks AO Element Notes Guidance

14(f)(ii) B2 for 4 B1 for

or better
oe
or B1 for

oe

or

B1 for each
B2 for 0.17 and 1.08 final ans
If 0 scored, SC1 for
answer 0.2 and 1.1
or answer − 0.17 and
−1.08
or 0.174... and 1.075 to
1.076 seen
or 0.17 and 1.08 seen in
working

15(a) 4 1

15(b) 52 2 M1 for f(8) seen or

15(c) 1
- Mark Scheme /

Question Answer Marks AO Element Notes Guidance

15(d) 3 M1 for
or

final answer
B1 for denominator
or

15(e) −3 2 M1 for

15(f) [p =] 0 and [p =] 1 2 B1 for each

16(a) 3
oe isw B2 for oe
isw
OR

B1 for seen

B1 for time = 2.8 or

or oe
- Mark Scheme /

Question Answer Marks AO Element Notes Guidance

16(b) M2 for 4 FT their time, provided


2 algebraic fractions one
or better in x and other in ± x ±
10
M1 for
seen or better
M1 for

FT their equation dep on


A1 for oe M2
or or
better
leading to with no errors or
omissions

16(c) B2 for 4 B1 for

or better
oe
or for or

B2 for 5 and 8.57 or 8.571…

B1 for each
or SC1 for final answers
5 and –8.57
- Mark Scheme /

Question Answer Marks AO Element Notes Guidance

16(d) 84 to 84.01… 2 FT
to
3 sf or better
M1 for

oe

17(a)(i) 1

17(a)(ii) 1

17(b) 4 FT their (a)(i) and (a)(ii)


M1 for oe
if expressions in m
M1 for Dependent on M1 and
correct fractions
oe
A1 for

oe nfww
A1 for correct completion to
- Mark Scheme /

Question Answer Marks AO Element Notes Guidance

17(c)(i) 3.6 and −4.5 final answer 3 B2 for


or

or better
or B1 for

where ac = 10 and
either bd = −162
or ad + bc = 9
or for

or better or or
better

17(c)(ii) 20 1
- Mark Scheme /

Question Answer Marks AO Element Notes Guidance

18(a) 20.8 or 20.76 to 20.79 4 B3 for [BC =] 10.4 or


10.38 to 10.39… or
oe
or M2 for

oe

or M1 for oe
or oe
or oe or
oe
or SC2 for final answer
of or 26.8 or
26.83…
OR
M3 for

oe

or M2 for

or M1 for oe or
oe
or oe
- Mark Scheme /

Question Answer Marks AO Element Notes Guidance

18(b) 14.5 or 14.47 to 14.48 3


M2 for
oe
or M1 for recognising the
correct angle GAC

19(a) 4.455 to 4.456… [= 4.46] 2


M1 for oe

19(b) 1250 or 1247 to 1249.9… 2 M1 for


oe

19(c) 66[.0] or 65.95 to 66.02 3 M2 for


oe

or B1 for identifying
angle ANB on cylinder
not on rectangle

20(a) 3 1
- Mark Scheme /

Question Answer Marks AO Element Notes Guidance

20(b) 51.3 or 51.30 to 51.34… 4


M3 for

or

oe

or M2 for or

or M1 for angle ARB


clearly indicated

21(a) Correct sketch 2 B1 for one correct branch


or correct sketch but with
branches joined

21(b) 11.3 or 11.30 to 11.31 2 B1 for each


and If 0 scored SC1 for two
answers with a difference
191.3 or 191.30 to 191.31
of 180°

22(a) Correct sketch 2 B1 for correct shape but


inaccurate
- Mark Scheme /

Question Answer Marks AO Element Notes Guidance

22(b) Rotational [symmetry] order 2 2 B1 for rotational


[centre] (180, 0) [symmetry]

23(a) 2 B1 for linear equation


with positive gradient or
intercept 5

23(b) oe 2 B1 for recognition of sin


or cos(x – 90)

24(a) 70 or 70.16[5…] or 70.17 or 70.2 3 M2 for


or

or

or B1 for 29 750 or
29 850 or 29 849 or 375
or 425 or 424 seen

24(b) 2399 2 B1 for 27 450 or 27 550


or 27 549 or 29 850 or
or 2400 nfww
29 849 seen

25 70 nfww 3 M2 for
(600 + 2.5) ÷ (9 – 0.5)
or B1 for one of
600 + 2.5
or 9 – 0.5 seen
- Mark Scheme /

Question Answer Marks AO Element Notes Guidance

26(a) 245 1

26(b) 8 2 M1 for 40 + 26.5x = 252


oe
or B1 for 212 seen

26(c) 6 2 M1 for (224 − 2 × 48 ) ÷


32 oe
or 2 × 48 + 32(x – 2) =
224 soi

26(d) 35 : 36 : 32 final answer 2 B1 for their (a) : 252 :


224 or equivalent ratio

27(a) 2.25 final answer 2


M1 for or
oe

27(b) 37.5 1
FT their

27(c) 5.5[0] or 5.499 to 5.500 2 M1 for 6 ÷ 1.091

[Total: 222]

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