MathsWealth 2026 GCSE Maths

Higher Tier — Practice Paper 1 Worked Solutions

WORKED SOLUTIONS
Paper: Higher Tier Paper 1
Total: 80 marks
Calculator: Not allowed
Questions: 23
How to use this page: Try each question first, then compare your method with the worked solution. The mark notes show the main steps that earn credit; they are illustrative rather than an official Pearson mark scheme.
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Worked SolutionsYou are here
1 [2 marks]
Common difference = 10 − 6 = 4. M1
The first term is 6, so nth term = 6 + 4(n − 1) = 4n + 2. A1
Answer: 4n + 2
2 [4 marks]

(a)

79 = 2836, and 512 = 1536. M1
28 − 1536 = 1336. A1

(b) The numerator and denominator should both be multiplied: 5×3 = 15 and 6×10 = 60, so the fraction is 15/60 = 1/4. B1

Answers: 13/36 and 1/4
3 [5 marks]

(a)

Garden area = 12×7 = 84 m²; pond area = 4×3 = 12 m². Remaining area = 72 m². M1
Paint = 5×2.5 = 12.5 litres. Coverage = 12.5×8 = 100 m². M1
100 > 72, so there is enough paint. A1

(b) At 5 m² per litre, coverage = 12.5×5 = 62.5 m². This is less than the 72 m² needed, so the gardener does not have enough paint. M1 A1

Answer: No. The gardener is short by 72 − 62.5 = 9.5 m² of coverage.
4 [3 marks]

(a) A but not B is 12. A1

(b) Total = 12+8+15+21+6 = 62. A∪B = 12+8+15 = 35.

P(A∪B) = 35/62. M1 A1
Answer: 12 and 35/62.
5 [4 marks]

(a) 468 km → 500 km and 18 km/L → 20 km/L.

Estimated fuel = 500÷20 = 25 litres. M1 A1

(b) Actual fuel = 468÷18 = 26 litres. Since 25 < 26, the estimate is an underestimate. B1

Answer: 25 litres, underestimate.
6 [4 marks]

(a)

Gradient = (10−1)/(4−(−2)) = 9/6 = 3/2. M1
1 = (3/2)(−2)+c, so c=4. A1

(b) A parallel line has the same gradient and passes through (0,−5).

y = (3/2)x − 5. A1
Answers: y = 3x/2 + 4; y = 3x/2 − 5.
7 [5 marks]
Blue cards = 480×5/8 = 300. M1
Small blue cards = 300×2/5 = 120. M1
Small blue maths cards = 120×3/5 = 72. M1
Percentage = (72/480)×100 = 15%. A1 A1
Answer: 15%
8 [3 marks]
Total mass of 8 = 8×2.75 = 22 kg. M1
Total mass of 3 = 3×2.1 = 6.3 kg. Other 5 = 22−6.3 = 15.7 kg. A1
Mean = 15.7÷5 = 3.14 kg. A1
9 [1 mark]
0.72 = 72% of the original price, so the reduction is 100−72 = 28%.
Answer: 28%
10 [4 marks]
From 2x+y=9, y=9−2x. M1
4x−3(9−2x)=13 → 10x=40 → x=4. M1 A1
y=9−8=1. A1
Answer: x=4, y=1
11 [3 marks]

A point P has coordinates (4, −2).

The point P is translated by the vector

−3 5

to give point Q.

(a) Write down the coordinates of Q.

Add −3 to the x-coordinate and 5 to the y-coordinate: Q = (4−3, −2+5) = (1, 3). M1 A1

Point Q is then rotated 90° clockwise about the origin to give point R.

(b) Write down the coordinates of R.

A 90° clockwise rotation about the origin maps (x, y) to (y, −x). Therefore (1, 3) maps to (3, −1). A1
Answers: Q = (1, 3); R = (3, −1).
12 [3 marks]
y=x²−4: opens upwards. A1
y=−x³: decreasing. A1
y=6/x: has no value at x=0. A1
13 [5 marks]

Frequency density = frequency ÷ class width.

IntervalDensity
0–101.8
10–253.6
25–353.0
35–502.4
50–601.2

(b) From 20–25: 5×3.6=18 students estimated. From 25–35: 30. From 35–40: 5×2.4=12.

Estimated number = 18+30+12 = 60. M1 A1
Fraction = 60/150 = 2/5. A1
Answer: 2/5. Histogram bars should have the five densities above. 2 marks
14 [3 marks]
(x+4)(x−3)=x²+x−12. M1
(2x−1)(x²+x−12) = 2x³+x²−25x+12. A1 A1
15 [4 marks]
Arc length rθ = 4π, so 8θ=4π and θ=π/2. M1
Sector area = 1/2 r²θ = 1/2×64×π/2 = 16π cm². M1 A1 A1
16 [2 marks]
First counter red: n/(n+1). After one red is taken, n−1 red remain out of n counters, so second red: (n−1)/n. M1
Multiply: n/(n+1) × (n−1)/n = (n−1)/(n+1). A1
17 [3 marks]

(a)

3√5×√5√5 = 3√5/5. A1

(b)

√80=4√5 and √20=2√5, so √80−√20 = 2√5. M1 A1
18 [3 marks]
0.24 = 24/99 and 0.15 = 15/99. M1
Therefore 0.24 + 0.15 = (24+15)/99 = 39/99. M1 A1
Here m=39.
19 [3 marks]
By Pythagoras in the smaller triangle, the missing side is √(10²−6²)=√64=8 cm. M1
Scale factor = 15/10 = 1.5. M1
Corresponding side = 8×1.5 = 12 cm. A1
20 [3 marks]
From 2y=3²×2, we have 3²=2y−1. M1
Then 2n=2x×2y−1=2x+y−1. M1
Since x+y=7, n=7−1=6. A1
21 [4 marks]
Let width=w and height=h. Volume: 10wh=240, so wh=24. M1
Surface area: 2(10w+10h+wh)=316, so 10(w+h)+24=158 and w+h=13. M1
The two numbers are 4 and 9 because they multiply to 24 and add to 13. Width>height, so h=4. A1
Answer: 4 cm. A1
22 [4 marks]

(a) The cosine graph passes through (0,1), (90,0), (180,−1), (270,0) and (360,1), with a smooth curve. 2 marks

0 90 180 270 360 1 0 −1 y x°

(b) 2 cos x° = −1, so cos x° = −1/2. In 0° ≤ x ≤ 360°, this occurs at 120° and 240°. M1 A1

Answer: x = 120°, 240°.
23 [5 marks]

Circle C has centre (0, 0) and passes through P(6, 8). A line through P meets the circle again at Q(−8, −6).

(a) Work out the radius of circle C.

The centre is (0,0), so use Pythagoras: r = √(6² + 8²) = √100 = 10. M1 A1
Answer (a): 10 units

(b) The line PQ crosses the y-axis at (0, k). Find the value of k. Show all your working.

Gradient of PQ = (8−(−6)) ÷ (6−(−8)) = 14 ÷ 14 = 1. M1
So the line has equation y = x + c. Using P(6,8): 8 = 6 + c, so c = 2. M1 A1
Answer (b): k = 2
END OF WORKED SOLUTIONS