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# Mr M's GCSE Maths Linear Higher Tier 1MA0 Paper 1 Answers November 2012

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1. Mr M's Edexcel GCSE Maths Higher Tier Linear 1MA0 Paper 1 Answers November 2012

1. Recipe

270g flour, 60g ginger, 165g butter, 45g sugar (3 marks)

2. Scatter graph

a) Positive (1 mark)

b) 84 cm (or an answer close to this) (2 marks)

3. Electricity bill

Gary has used 60 units so the cost is £9 (4 marks)

4. Questionnaire

Suitable question that includes a time period and a range of non-overlapping response boxes (2 marks)

5. Estimate

600 (3 marks)

6. Enlargement

Enlargement scale factor 2.5 with centre of enlargement (0, 0) (3 marks)

7. Grass seed

7 bags are needed and this will cost £34.93 (4 marks)

8. Probability

a) 0.15 (2 marks)

b) 48 red counters (2 marks)

9. Prism

380 (3 marks)

10. Map

Shaded intersection between two overlapping circles (3 marks)

11. Expanding brackets

a) (1 mark)

b) (2 marks)

c) (2 marks)

12. Circle inside a square

(3 marks)

13. Concrete mix

Talil does not have enough cement (4 marks)

14. Bearings

230 degrees (2 marks)

15. Indices

a) (1 mark)

b) (2 marks)

16. Right-angled triangle

x = 8 so the value of A = 84 (4 marks)

17. Linear inequalities

Mark points (4, 3) (4, 4) (4, 5) (5, 4) with crosses (3 marks)

18. Regular polygons

12 sides (4 marks)

19. Box plots

a) Draw box plot (2 marks)

b) Median time for girls is higher and interquartile range for boys is larger or any other pair of valid comparisons (2 marks)

20. Ordering numbers

(2 marks)

21. Cumulative frequency

a) 2, 11, 34, 65, 92, 100 (1 mark)

b) Draw cumulative frequency graph (2 marks)

c) 20 (or an answer close to this) (2 marks)

22. Simultaneous equations

a) x = -2 and y = 5 (4 marks)

23. Coordinate geometry

The length of PD = 7.5 (4 marks)

24. Changing the subject

(4 marks)

25. Similar solids

a) 640 (2 marks)

b) 40 (2 marks)

26. Surds

a) (2 marks)

b) (2 marks)

27. Graphing equations

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

b) Draw cosine curve between 0 and 360 degrees (2 marks)

28. Vectors

a) a-3b (1 mark)

b) Show vector NC is a multiple of vector NM and state they have a point in common so NMC is a straight line (4 marks)
2. Any idea of the grade boundaries?
3. (Original post by TaniaK17)
Any idea of the grade boundaries?
They are not decided until after all the papers have been marked.
4. Mr M for question 18 I got the correct answer but just had a load of random numbers and squiggles so no working out, how many marks do you think I would get?

I found that Paper pretty hard how did everyone else find it?
5. Found this paper quite difficult.. any idea of the topics for the calc exam on thurs? The 'prediction' pixl paper for this one was so wrong!
6. Can anyone explain how the sides are 12

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7. Not really but trigonometry is guaranteed
8. (Original post by swift1)
Mr M for question 18 I got the correct answer but just had a load of random numbers and squiggles so no working out, how many marks do you think I would get?

I found that Paper pretty hard how did everyone else find it?
No asterix on that question so you should get all of the marks.
9. For question 6, I put centre 0, but not 0,0 and I wrote everything else correctly. Would I still get full marks for this question?
10. I put 620 for the estimation question rather than 600 (rounded to 31 rather than 30)

How many marks would i get for this out of 3? 2?
11. (Original post by TaniaK17)
For question 6, I put centre 0, but not 0,0 and I wrote everything else correctly. Would I still get full marks for this question?
yes
12. (Original post by Mr M)
No asterix on that question so you should get all of the marks.
Thanks also could you tell me the specific questions for 24 and 26 please
13. Thank you, can you please tell me the specific questions for question 1, question 24 and question 26 B?
14. Question 12.
Mr M, is that the correct answer for that question?.. dont you do 12x12= 144... 6^2xtt = 36TT(in terms of pie)
and then 144-36= 108, then 108/4 because there are 4 corners and then doesnt this give you the answer for the 1 corner? I asked my maths teacher that question after the exam and he said i done it the correct way? can you please confirm that these stages i done are right or wrong.. and how much marks i would have got for the question, thank you.
15. Hey,
On 2a) I got 81, is that close enough to 84?

For 6) I wrote "Scale factor 2.5 about the origin" would that get the marks?

For 28a) i got "-3b + a" is that the same? Will i get the marks?

But thanks for this Mr. M! Its put my mind at ease! Really appreciate it!
16. (Original post by FireFreak)
Question 12.
Mr M, is that the correct answer for that question?.. dont you do 12x12= 144... 6^2xtt = 36TT(in terms of pie)
and then 144-36= 108, then 108/4 because there are 4 corners and then doesnt this give you the answer for the 1 corner? I asked my maths teacher that question after the exam and he said i done it the correct way? can you please confirm that these stages i done are right or wrong.. and how much marks i would have got for the question, thank you.
the 6^2 is actually being multiplied by pi. 36 comes from dividing 144 but I'm not too sure where the pi but comes from.

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17. For question12 would I still get full marks because I wrote 9(4- pi)
18. (Original post by zed963)
Can anyone explain how the sides are 12

This was posted from The Student Room's iPhone/iPad App
There was an equilateral triangle between the 2 Pattern A tiles. So 360-60 = 300
300/2 =150.
So the exterior angle is 30 because it must add up to 180
360/30 =12 as the exterior angles add up to 360.
So 12 vertices= 12 sides.
19. For question 18 how did you get 12 sides?

I got 6 sides as I thought that tile B was an equilateral triangle ??

HELP!
20. But is it not 12 x 12 = 144. 6 x 6 = 36. And I didn't do this but aren't you supposed to do 144 - 36 = 108, then 108/4 gives you the area of one shaded corner?

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