[Unofficial Mark Scheme] Edexcel GCSE Maths Paper 1 - Thursday 15th May 2025

9

Unofficial Mark scheme, let me know if you remember any answers and I'll edit this message.

1) HCF: 6
2) Probability of Blue: 0.4
2b) 150 in total in the bag of counters
3) Turning point (-0.5, -4.2) {some answers were (-0.5, -4.4) or (-0.5, -4.5) - a range is usually awarded}
4) n = 4.5
5) Shape transformed 90 degrees anticlockwise around (-1,0)
5b) Your shape should be 2x smaller but not flipped
6) Prove they're similar
6b) EC = 6cm
7) Distance = 220m
7b) gradient = 10/11
8) Polygon one-12
9)
10)
11)
12) 3(m-2)
12b) x <= 10
12c) 2.5 < x < 4
13) Recurring decimals, xy = 5/33
14) D was 125
15) Simplify the surd: 5 root 7
16) Histograms 13/40
17) Function question: 13/12

And similar shapes one with the 2 triangles

T = 3 somewhere?

H = 2x^2 -1 G = 1-3x

Prove the even square sum is a multipe of 4
8n2+8n+4 = 4(2n2+2n+1)
Some answered: 4(n+1)
Some answered: 4(2n+1)

(edited 11 months ago)

Reply 1

sufyaankad

4

1)6

2)0.4

3)

4)4.5

5)

6)

7)

8) Polygon one-12

?)Histogram one was 13/40

17)13/12

Reply 2

V0rtexx

OP

9

Original post

by sufyaankad

1)6
2)0.4
3)
4)4.5
5)
6)
7)
8) Polygon one-12
?)Histogram one was 13/40
17)13/12

ty brother

Reply 3

V0rtexx

OP

9

not letting me edit lol any tips?

Reply 4

sufyaankad

4

There was also

Transform shape - rotate__ around -1,0 or something

And similar shapes one with the 2 triangles

And recurring decimals 5/33

And an inequalities one x<= 10
(I think)

Reply 5

V0rtexx

OP

9

Original post

by sufyaankad

There was also
Transform shape - rotate__ around -1,0 or something
And similar shapes one with the 2 triangles
And recurring decimals 5/33
And an inequalities one x<= 10
(I think)

Tyy yep

Reply 6

yukira

2

yall who remembered the last function question on higher😭😭 I need the two functions to redo it xx

Reply 7

Finstar9000

6

It was 150 in total in the bag of counters for 2b

Reply 8

Finstar9000

6

Original post

by yukira

yall who remembered the last function question on higher😭😭 I need the two functions to redo it xx

H = 2x^2 -1 G = 1-3x

Reply 9

yukira

2

Original post

by Finstar9000

H = 2x^2 -1 G = 1-3x

thank u so much😭🫶🏻

Reply 10

V0rtexx

OP

9

1) HCF: 6
2) Probability of Blue: 0.4
3)
4) n = 4.5
5)Shape transformed 90 degrees anticlockwise around (-1,0)
5b) Your shape should be 2x smaller but not flipped
6) Prove they're similar
6b) EC = 6cm
7) Distance = 220m
7b) gradient = 10/11
8) Polygon sides = 12
9)
10)
11)
12) 3(m-2)
12b)x<= 10
12c) 2.5<x< 4
13) Reccuring decimals, xy = 5/33
14) D was 125
15)
16)
17) Function question: 13/12

Reply 11

Finstar9000

6

Original post

by V0rtexx

1) HCF: 6
2) Probability of Blue: 0.4
3)
4) n = 4.5
5)Shape transformed 90 degrees anticlockwise around (-1,0)
5b) Your shape should be 2x smaller but not flipped
6) Prove they're similar
6b) EC = 6cm
7) Distance = 220m
7b) gradient = 10/11
8) Polygon sides = 12
9)
10)
11)
12) 3(m-2)
12b)x<= 10
12c) 2.5<x< 4
13) Reccuring decimals, xy = 5/33
14) D was 125
15)
16)
17) Function question: 13/12

16 was part a as 5 root 7 and part b was a= 7 and b = 5

Reply 12

Finstar9000

6

Original post

by V0rtexx

1) HCF: 6
2) Probability of Blue: 0.4
3)
4) n = 4.5
5)Shape transformed 90 degrees anticlockwise around (-1,0)
5b) Your shape should be 2x smaller but not flipped
6) Prove they're similar
6b) EC = 6cm
7) Distance = 220m
7b) gradient = 10/11
8) Polygon sides = 12
9)
10)
11)
12) 3(m-2)
12b)x<= 10
12c) 2.5<x< 4
13) Reccuring decimals, xy = 5/33
14) D was 125
15)
16)
17) Function question: 13/12

15 I think was the histogram which was 13/40

Reply 13

MaceyL

8

Original post

by V0rtexx

1) HCF: 6
2) Probability of Blue: 0.4
3)
4) n = 4.5
5)Shape transformed 90 degrees anticlockwise around (-1,0)
5b) Your shape should be 2x smaller but not flipped
6) Prove they're similar
6b) EC = 6cm
7) Distance = 220m
7b) gradient = 10/11
8) Polygon sides = 12
9)
10)
11)
12) 3(m-2)
12b)x<= 10
12c) 2.5<x< 4
13) Reccuring decimals, xy = 5/33
14) D was 125
15)
16)
17) Function question: 13/12

can’t remember what question number, either 15 or 16 i think but surds question was a=7 b=5

Reply 14

sufyaankad

4

https://vm.tiktok.com/ZNdr8VSBF/

Reply 15

frgyfaudhjadf

6

Does someone remember the marks for the questions?

Reply 16

apolinariija

Original post

by V0rtexx

1) HCF: 6
2) Probability of Blue: 0.4
3)
4) n = 4.5
5)Shape transformed 90 degrees anticlockwise around (-1,0)
5b) Your shape should be 2x smaller but not flipped
6) Prove they're similar
6b) EC = 6cm
7) Distance = 220m
7b) gradient = 10/11
8) Polygon sides = 12
9)
10)
11)
12) 3(m-2)
12b)x<= 10
12c) 2.5<x< 4
13) Reccuring decimals, xy = 5/33
14) D was 125
15)
16)
17) Function question: 13/12

do you have the marks for each q?

Reply 17

X4YN4B

11

Original post

by V0rtexx

1) HCF: 6
2) Probability of Blue: 0.4
3)
4) n = 4.5
5)Shape transformed 90 degrees anticlockwise around (-1,0)
5b) Your shape should be 2x smaller but not flipped
6) Prove they're similar
6b) EC = 6cm
7) Distance = 220m
7b) gradient = 10/11
8) Polygon sides = 12
9)
10)
11)
12) 3(m-2)
12b)x<= 10
12c) 2.5<x< 4
13) Reccuring decimals, xy = 5/33
14) D was 125
15)
16)
17) Function question: 13/12

Pretty sure 3 was that turning point question I think I got (-0.5,-4.2)

Reply 18

adambendeb

1

Original post

by V0rtexx

1) HCF: 6
2) Probability of Blue: 0.4
3)
4) n = 4.5
5)Shape transformed 90 degrees anticlockwise around (-1,0)
5b) Your shape should be 2x smaller but not flipped
6) Prove they're similar
6b) EC = 6cm
7) Distance = 220m
7b) gradient = 10/11
8) Polygon sides = 12
9)
10)
11)
12) 3(m-2)
12b)x<= 10
12c) 2.5<x< 4
13) Reccuring decimals, xy = 5/33
14) D was 125
15)
16)
17) Function question: 13/12

Question 3 was the turning point (-0.5, -4.5), right?