Gcse Mathematics Paper 1f Non Calculator Answers

Edexcel GCSE Mathematics Linear Higher Tier 1380 Paper 3 Nov 2010 Answers

1. Chocolates

36 (2 marks)

2. Simplifying expressions

(a) (1 mark)

(b) 6cd (1 mark)

3. Spinners

(a) Missing values: 13, 15, 15, 17 (1 mark)

(b) Missing ways: (4, 7) (6, 5) (8, 3) (2 marks)

4. Sequences

(a) 4n – 2 (2 marks)

(b) (i) 1

(ii) -15 (2 marks)

5. Area of a circle

314 (2 marks)

6. Estimate

4 (other answers close to this would be accepted) (2 marks)

7. Mileage

£64.75 (3 marks)

8. Straight line graph

Straight line passing through (0, 4) and (4, 0) (3 marks)

9. Angles

(a) 120 degrees (2 marks)

(b) Exterior angle of equilateral triangle = 120 degrees OR Interior angle = 60 degrees AND angles on a straight line = 180 degrees (1 mark)

10. Stem and leaf diagram

(a)

6 | 9
7 | 2 4 7 7 7 8
8 | 0 1 2 3 3 6
9 | 1 2

Key: 6 | 9 = 69 (3 marks)

(b) Mode = 77 (1 mark)

11. VAT

£405 (6 marks)

12. Transformations

(a) Rotation 180 degrees about (0, 0) OR Enlargement scale factor -1 about (0, 0) (3 marks)

(b) Triangle with vertices at (6, 1) (6, 4) (5, 4) (1 mark)

13. Changing the subject

OR (2 marks)

14. Midpoint

(7, 5) (2 marks)

15. Square based pyramid nets

B and E (2 marks)

16. Algebra

(a) 13x + 3 (2 marks)

(b) x + 2 (1 mark)

(d) xy (x + y) (2 marks)

17. Perpendicular bisector (2 marks)

18. Fractions

(a) $1 \frac{9}{20}$ (3 marks)

(b) $4 \frac{2}{3}$ (3 marks)

19. Similar triangles

(a) 12 (2 marks)

(b) 50 (2 marks)

20. Box plots

(a) 13.2 (1 mark)

(b) 1.2 (2 marks)

21. Linear simultaneous equations

x = 0.5 and y = -3 (4 marks)

22. Circle Theorem and Pythagoras' Theorem

(a) Radius and tangent are perpendicular (1 mark)

(b) 4 (3 marks)

23. Quadratics

(a) (2 marks)

(b) x = -9 or x = 1 (3 marks)

24. Histogram

(a) Shade rectangle 3 cm tall and 4 cm wide (2 marks)

(b) 25 (2 marks)

25. Stratified sample

9 (2 marks)

26. Inverse Proportion

(a) $P = \frac{40}{V}$ (3 marks)

(b) 20 (1 mark)

27. Vectors

(a) 0.5a + 0.5b (2 marks)

(b) 0.5b – 0.5a (2 marks)

28. Circle and line

(a) Draw circle centre (0, 0) radius 3 (2 marks)

(b) This is an appalling question as a graphical solution is approximate but ...

x = 2.6, y = -1.6
x = -1.6, y = 2.6

Answers close to these values will be accepted (3 marks)

OMG OMG 96% i think
im soo relieved
hopefully i get a good marker

(Original post by Mr M)
Edexcel GCSE Mathematics Linear Higher Tier 1380 Paper 3 Nov 2010 Answers

Hmm think I got about 87ish,depending on their generosity on method marks.
Agree with the last question, dodgy.

Okay, so on the 6 mark question about VAT, I accidently made 17.5% 1150 instead of 1050, from there I done everything else fine and come to 415. How many marks will I get??

And for the circle theorem/pythag question, I worked out the side, but forgot to minus the radius, so I got 10, not 4. How many marks will I get??

(Original post by Ears)
Hmm think I got about 87ish,depending on their generosity on method marks.
Agree with the last question, dodgy.

Okay, so on the 6 mark question about VAT, I accidently made 17.5% 1150 instead of 1050, from there I done everything else fine and come to 415. How many marks will I get??

And for the circle theorem/pythag question, I worked out the side, but forgot to minus the radius, so I got 10, not 4. How many marks will I get??

drop 2 marks and 1 mark respectively

Hi Mr M
Have you got the answers to yesterdays modular higher edexcel non cal exam?

Cheers!

ohh i messed up the VAT question aswel a little bit...basically i did 17% and 0.5% and 100% all seperately then added them all up at the end...and then -3000.... divide by 10
which can also be done as a correct method, but i got the 17% wrong and everything right because i did a stupid mistake (17x60=1140) so i got the answer of 417. How many marks would i lose?

Also for the straight line graph, I think i accidently drew ast points -2 and 5 and when to the edge of the graph and I heard from some friends that I will lose a mark for that...Is that right?

Thanks

Hiya do you know the rough gade boundaries?

For the estimation question I wasn't sure what to do so I got 3.2 (showed my working out). 0,1 or 2 marks?

Also for the quartile question i put 'interquartile range is better as it shows where most of the results are condense', Would i get a mark?

Hey Mr M.

Thanks for posting up the mark scheme, I think I got around 75 but then again I am being too generous to myself and hopefully the examiner will too

On the area of a circle question, I wrote in the answer box as 100?. I know it was a foolish mistake but at that time I thought since they gave the units for pi and it was non calculator I thought it'd be wise to write in terms of pi.
However, I did remember to write in my working out space
area= ?r^2
= ?x10^2
area= 100?

100?=314 cm^2

So I really want to know if I got the full marks for that since this my year 10 early entry ended up with a B which is why I'm doing the retake and I really want an A or higher if I'm to continue A levels in my 6th form.

Looking forward to a reply.

28. Circle and line

(a) Draw circle centre (0, 0) radius 3 (2 marks)

(b) This is an appalling question as a graphical solution is approximate but ...

x = 2.6, y = -1.6
x = -1.6, y = 2.6

Answers close to these values will be accepted (3 marks)[/QUOTE]

In question 28 where is says answers close to these values will be accepted, how close roughly?

yeah i did quite well,

im so happy i got the last question right!

but the first question i got 24, how was it 36, wasnt it in the ratio of 1:2 where 1 part was 12.

and for the vectors, if i did b1/2 - a1/2 instead of 1/2b – 1/2a will i still get it right?

and will i get marks if i did 180/1000*50, do i still get some marks
i know i got it worng as i got 5, but do i still get a mark.

Hi Mr M, i got 4 questions:

1) on the simaltaneuos equations i done it wrong... i wrote 3 instead of -3 and wrote 2 instead of 1/2, however just wondering would i get any marks for attempting to work out the equation even though both my answers were wrong (although only the wrong sign for y=-3).

2) As it was my first gcse exam, i panicked and in my working out i wrote for the 6 and 2/3 for the question when the answer should of been 3/20, though 3/20 is seen in my working out. Any marks available?

3) For part b) vectors the answer was -1/2 -b - 1/2 a), however i put -1 anda 1/2 b - 1/2 a, would i get any marks for writing out 1 and a half b - 1/2 a, even though the answer didnt include 1 and a 1/2, but just a 1/2.

4) For the circle thereom which is equal to 4, i showed the lenght to be 10, then halfed it, and put my final answer as 5. However, i did show the part where i solved the lenght B to 0 being 10 by using pytharogas thereom put i halfed 10 instead of minusing it from 6. my answer was 5 not 4, showed some working out, so how many marks may i be likely to get?

Do i get any marks for ANY questions i got wrong, if i have shown some working out. Thanks.

(Original post by lucas33)
28. Circle and line

(a) Draw circle centre (0, 0) radius 3 (2 marks)

(b) This is an appalling question as a graphical solution is approximate but ...

x = 2.6, y = -1.6
x = -1.6, y = 2.6

Answers close to these values will be accepted (3 marks)

In question 28 where is says answers close to these values will be accepted, how close roughly?[/QUOTE]

I'm guessing it will be between 2.5 to 2.6
and -1.5 to -1.6

(Original post by gold3n_ch1c)
yeah i did quite well,

im so happy i got the last question right!

but the first question i got 24, how was it 36, wasnt it in the ratio of 1:2 where 1 part was 12.

and for the vectors, if i did b1/2 - a1/2 instead of 1/2b – 1/2a will i still get it right?

errrm for the first question...the question was how many chocolates were there?
so there were 3 parts, 1 part = 12...so 12x3=36
and im not sure about second mark.....i think u probably will get the marks

(Original post by artuna95)
errrm for the first question...the question was how many chocolates were there?
so there were 3 parts, 1 part = 12...so 12x3=36
and im not sure about second mark.....i think u probably will get the marks

oh right... how could i get that wrong? im so angry with my self
but i honestly dont think i couldve done any better, i mean i answered the last question right so im happy about that

i just really want an A* for this, im gonna have to ace my calculator if i want it.
i got an A with modular and worked hard for it, now im doing it again but in linear and i really dont want to get an A again otherwise all my work has gone to waste.

and Mr M do you know the grade boundaries?

please dont let it be 180/200 i know thats the basic grade for edexcel, bit i really hope its lower.

(Original post by gold3n_ch1c)
oh right... how could i get that wrong? im so angry with my self
but i honestly dont think i couldve done any better, i mean i answered the last question right so im happy about that

and Mr M do you know the grade boundaries?

please dont let it be 180/200 i know thats the basic grade for edexcel, bit i really hope its lower.

I think i need to get 80% or above for an A* now in the calculator exam
because the people who did the exam last november...their grade boundary was 87% overall for an A*
the people who did it in the recent june...their grade boundary was 88% overall for an A*

so presumably the grade boundary for an A* should be 89% but someone at my school said that the grade boundary for an A* cannot apparently go over 88%....so im happy
...i guess it will probably be 88% or 89% for an A*

(Original post by artuna95)
I think i need to get 80% or above for an A* now in the calculator exam
because the people who did the exam last november...their grade boundary was 87% overall for an A*
the people who did it in the recent june...their grade boundary was 88% overall for an A*

i just dont wanna expect a low grade boundary incase i get dissapointed

i got an A last year, i dont know my percentage but iverall I got 344/400
and it was 360/400 to get an A* cuz some girl in my class got 259/400 and missed an A* it was probably by a fraction of a mark because we did modular and the marks were multiplied by i-dont-know-what

(Original post by gold3n_ch1c)
i just dont wanna expect a low grade boundary incase i get dissapointed

ohhh that seems close
....sorry i dont know much about modular

i cant wait for the results

(Original post by artuna95)
ohhh that seems close
....sorry i dont know much about modular

i cant wait for the results

round January 15th i think