Paper 42 (13th May) - Full Solutions

[Louise29]

24 hours have passed so here are full solutions to the 13th May IGCSE Maths Paper 42. These are my (IGCSE maths teacher) solutions and not the official solutions from CIE.

I’ll try to answer any questions regarding this paper but...

Since I don’t want to make any predictions that could be wrong, I will not answer any questions like, 'What will I need to get this grade?' or 'How hard/easy was the paper, what will the A boundary be?'.

I’ll only say that I thought it was a very hard paper, one of the hardest in recent years.

Here are the average total grade boundaries over the last 2 years:

A* : 174.7/200
A : 145.6/200
B : 114.8/200
C : 84.4/200

You can see my solutions to Paper 22 here.

Do you have answers for paper 43?

 

[Wolfgangs]

For the upper and lower bound, I did (10.9 + 10.9 + 23.7 + 23.7) which is 69.2. Then, I wrote for upper bound 69.25 and lower bound 69.15. Is it wrong? And if it is wrong do I lost the whole 3 marks?

 

[Sarah Jawrdawi]

Sir, for the pool question I put Pier^2 + 0.5 = 12000
Do I get at least 2 marks for showing Pier^ and the 12000?

 

[notnek01]

For the upper and lower bound, I did (10.9 + 10.9 + 23.7 + 23.7) which is 69.2. Then, I wrote for upper bound 69.25 and lower bound 69.15. Is it wrong? And if it is wrong do I lost the whole 3 marks?

Sorry it is wrong and I think you'll lose all the marks.

 

[notnek01]

Sir, for the pool question I put Pier^2 + 0.5 = 12000
Do I get at least 2 marks for showing Pier^ and the 12000?

I think you'll get 1 mark.

 

[S.Osama.A]

Sir i got all correct in my p22+42 except in 42 last question i wrote 19 how many marks do i loose? is there a chance to get a rank?

what was the actual anawer ??

 

[S.Osama.A]

whats the correct value of "n" in P42

 

[Wolfgangs]

I think that I scored 66 in Paper 22 and 101 in Paper 42. Which rank would I score? A or B?

 

[notnek01]

whats the correct value of "n" in P42

Well my answer is 20 which you can see in the solutions.

But I'm not from CIE so you can choose to believe me or not

 

[notnek01]

by the way how did u get the question paper

I'm an IGCSE teacher and I'm allowed to access the paper 24 hours after the exam.

 

[texiaco]

about what mark do u need to get for a world ranking and is it by country to or not? thank you!

 

[Sarahhowdie]

ew.

 

[uban23]

Hey.. for question 10 c, i wrote 7/2x-12

and for question 9 a i forgot to multiply the area of the hexagon by 2

how many do u think ill lose?

 

[Agung Pratama]

My prediction after saw your solution. I will get 66 mark in paper 22, and 114 in paper 42. Is it will A*?

 

[Wolfgangs]

So guys, I got 64 - 65 in Paper 22 and 102-104 in Paper 42. Would I get A or B in this case? What do you guys think?

 

[uzair shahid]

exp

So guys, I got 64 - 65 in Paper 22 and 102-104 in Paper 42. Would I get A or B in this case? What do you guys think?

expect an A

 

[uzair shahid]

my estimation after checking the solutions are
69/70 in paper 22
124/130 in paper 42
made some silly mistakes aghhhh

 

[Sarah Jawrdawi]

So guys, I got 64 - 65 in Paper 22 and 102-104 in Paper 42. Would I get A or B in this case? What do you guys think?

You might get A*.

 

[notnek01]

Hey.. for question 10 c, i wrote 7/2x-12

and for question 9 a i forgot to multiply the area of the hexagon by 2

how many do u think ill lose?

You will get no marks for 7/(2x-12) but you may get marks for working.

For 9a I predict you will lose 1 mark but you may lose 2.

 

[Agung Pratama]

180/200 A*!! Hopefully... Aamiin.