Question 1
Circle the relative frequency that represents 13 successes out of 50 trials.
0.13 26 13: 50 0.26
[1 mark]
Circle the relative frequency that represents 13 successes out of 50 trials.
0.13 26 13: 50 0.26
[1 mark]
The equation of a straight line is 2 y = 3 x + 5 Circle the gradient of the line.
[1 mark]
(2 x – 4)(3 x + 5) is expanded and simplified. Circle the term which is part of the answer.
2 x – 2 x 22 x – 22 x
[1 mark]
When rounded to 3 significant figures, x = 6.37 Circle the correct error interval.
[1 mark]
Solve the simultaneous equations 7 x + 2 y = 36 3 x + 2 y = 16
[3 marks]
Tom is tiling a wall. He needs to buy at least 100 tiles. The tiles are sold in large packs and small packs.
Large pack 40 tiles £18 Small pack 28 tiles £14 Special offer 25% reduction when you buy 3 or more large packs
Work out the cheapest cost for Tom to buy the packs of tiles he needs.
[3 marks]
Tom is also tiling a floor. The floor is a rectangle with length 600 cm and width 240 cm Each tile is a square with side 40 cm Tom uses this method to work out the number of tiles he needs.
Number of tiles that will fit along the width = 240 ÷ 40 = 6 Total number of tiles needed = 15 + 6
Give a reason why Tom’s method is wrong.
[1 mark]
An equilateral triangle has side length 16 metres. Using ruler and compasses only, construct a scale drawing of the triangle. Use the scale 1 centimetre represents 2 metres. Scale: 1 cm represents 2 m
[3 marks]
In a choir there are 35 men and 48 women. The probability that a man chosen at random wears glasses is The probability that a woman chosen at random wears glasses is
Work out the number of people in the choir who wear glasses.
[3 marks]
A person is chosen at random from the choir. Work out the probability that the person does not wear glasses.
[2 marks]
The pie chart shows information about people at a theme park.
There were 450 more women than men. Work out the number of children.
[3 marks]
10 Density =
The mass is divided by 2 and the volume is multiplied by 4 What happens to the density? Circle your answer.
× 2 ÷ 2 × 8 ÷ 8
[1 mark]
Work out cube root of 512: reciprocal of 0.4 Give your answer in the form n: 1
[3 marks]
The graph shows how much Molly is paid for working for up to 40 hours. She receives a basic rate of pay for the first 35 hours worked a higher rate of pay for the next 5 hours worked.
Work out the difference between the higher rate of pay and the basic rate of pay. Give your answer in £ per hour.
[3 marks]
Naga states a hypothesis. “Most people read more than 100 books a year.” She asks a sample of five people in a book club how many books they read last month. The table shows the results.
| Lynn Ali Paul Chen Ruth | |
| Number of books | 10 11 8 10 13 |
Show how Naga could use the data to support her hypothesis.
[2 marks]
Give two reasons why this sample should not be used to support her hypothesis.
[2 marks]
A graph has equation y = x3 + a where a is an integer. The graph passes through the point (3, 29) Draw the graph for values of x from – 3 to 3
[3 marks]
When you earn money you pay income tax. The amount you pay depends on how much you earn that year. You pay 0% on the first £12 500 you earn 20% on the next £37 500 you earn 40% on the next £112 500 you earn. One year, Kim paid £9260 income tax. Work out how much she earned that year.
[4 marks]
A building company employs 2 labourers 14 joiners 9 electricians 8 plumbers. For a job, the company needs one of each type of worker.
In how many ways can the company choose the four workers?
[2 marks]
One labourer and two plumbers are on holiday. In how many ways can the company now choose the four workers?
[2 marks]
f(x) = 3x2 – 4x + 8 for all values of x Jenny says, “f(10) must equal 2 × f(5), because 10 is 2 × 5” Is Jenny correct? Show working to support your answer.
[2 marks]
Work out the two roots of (7 x + 1)(2 x – 3) = 0 Circle both roots.
[1 mark]
Here is a cuboid. DH = 8 cm DB = 13 cm
Work out the size of angle DBH.
[2 marks]
Using your answer to part (a), work out the size of angle ECG.
[1 mark]
P (– 1, 1) is a point on the circle, centre O, radius r.
Work out the value of r. Circle your answer.
[1 mark]
Juice is sold in small bottles and large bottles. The volume of the large bottle is 1125 ml.
volume of small bottle: volume of large bottle = 2: 5 A café has small glasses and large glasses. volume of small glass: volume of large glass = 4: 7 A small bottle fills 6 small glasses with no juice left over. How many large glasses can be filled by a large bottle? You must show your working.
[4 marks]
The only solution to x2 + bx + c = 0 is x = 5 Work out the values of b and c.
[2 marks]
What is x as a fraction of y ? Circle your answer.
[1 mark]
Shape A and shape B are shown on the grid.
Describe the single transformation that maps shape A to shape B.
[3 marks]
Here is a sketch of a speed-time graph for the first part of a journey.
The total distance for the journey is 130 kilometres. How far is left to travel?
[4 marks]
Here is a triangular sail.
Vicky needs to buy waterproofing liquid for the sail. She will put 3 coats of liquid on each side of the sail. A litre of liquid covers 8.5 square metres of sail. How many 1-litre bottles of liquid does Vicky need?
[3 marks]
Another sail is joined to the first sail as shown.
x is an acute angle. Work out the size of angle x.
[5 marks]
Here is quadrilateral PQRS.
X is a point on PS where PX: XS = 1: 2 Y is a point on RQ where RY: YQ = 2: 1
Is XY parallel to PQ ? Show working to support your answer.
[3 marks]
f(x) = 2x – 3 and g(x) = x2
[4 marks]
The paper as printed
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