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Mathematics test Ma KEY STAGE 3 Paper 1 Calculator not allowed TIER 6–8 2005 Please read this page, but do not open your booklet until your teacher tells you to start. Write your name and the name of your school in the spaces below. First name Last name School Remember ■ The test is 1 hour long. ■ You must not use a calculator for any question in this test. ■ You will need: pen, pencil, rubber, ruler and a pair of compasses. ■ Some formulae you might need are on page 2. ■ This test starts with easier questions. ■ Try to answer all the questions. ■ Write all your answers and working on the test paper – do not use any rough paper. Marks may be awarded for working. ■ Check your work carefully. ■ Ask your teacher if you are not sure what to do. For marker’s use only QCA/05/1435 Sourced from SATs-Papers.co.uk Total marks http://www.SATs-Papers.co.uk Instructions Answers This means write down your answer or show your working and write down your answer. Calculators You must not use a calculator to answer any question in this test. Formulae You might need to use these formulae Trapezium Area = 1 (a + b)h 2 Prism Volume = area of cross-section t length KS3/05/Ma/Tier 6 –8/ P1 Sourced from SATs-Papers.co.uk 2 http://www.SATs-Papers.co.uk Midpoint 1. (a) P is the midpoint of line AB. 120 A P B What are the coordinates of point P? 0 P is ( 120 , ) 1 mark (b) Q is the midpoint of line MN. The coordinates of Q are ( 30, 50 ) M Q (30, 50) N What are the coordinates of points M and N? 0 M is ( , ) 1 mark N is ( , ) 1 mark KS3/05/Ma/Tier 6–8/P1 Sourced from SATs-Papers.co.uk 3 http://www.SATs-Papers.co.uk Square cut 2. The diagram shows a square. Two straight lines cut the square into four rectangles. The area of one of the rectangles is shown. 3 cm 12cm2 2cm A Not drawn accurately Work out the area of the rectangle marked A. cm2 2 marks KS3/05/Ma/Tier 6 –8/ P1 Sourced from SATs-Papers.co.uk 4 http://www.SATs-Papers.co.uk Making zero 3. (a) Look at this information. Two numbers multiply to make zero. One of the statements below is true. Tick ( ) the true statement. Both numbers must be zero. At least one number must be zero. Exactly one number must be zero. 1 mark Neither number can be zero. (b) Now look at this information. Two numbers add to make zero. If one number is zero, what is the other number? 1 mark If neither number is zero, give an example of what the numbers could be. and 1 mark KS3/05/Ma/Tier 6–8/P1 Sourced from SATs-Papers.co.uk 5 http://www.SATs-Papers.co.uk Cuboid 4. I join six cubes face to face to make each 3-D shape below. Isometric grid Then I join the 3-D shapes to make a cuboid. Draw this cuboid on the grid below. 2 marks Isometric grid KS3/05/Ma/Tier 6 –8/ P1 Sourced from SATs-Papers.co.uk 6 http://www.SATs-Papers.co.uk Dividing fractions, Solving an equation 5. How many eighths are there in one quarter? Now work out 1 3 ÷ 4 8 3 marks 6. Solve this equation. 75 + 2t = 100 – 2t t= 2 marks KS3/05/Ma/Tier 6–8/P1 Sourced from SATs-Papers.co.uk 7 http://www.SATs-Papers.co.uk Angle p 7. This shape has been made from two congruent isosceles triangles. 35˚ Not drawn accurately 35˚ What is the size of angle p? p= ° 2 marks KS3/05/Ma/Tier 6 –8/ P1 Sourced from SATs-Papers.co.uk 8 http://www.SATs-Papers.co.uk Speed bumps 8. Bumps are built on a road to slow cars down. The stem-and-leaf diagrams show the speed of 15 cars before and after the bumps were built. Key: 2 Before 3 means 23 mph After 2 7 3 0 2 4 3 5 6 8 9 4 1 3 4 4 4 6 4 6 6 7 8 8 0 0 0 1 2 3 8 4 3 2 3 2 2 5 9 4 4 4 (a) Use the diagrams to write the missing numbers in these sentences. Before the bumps: The maximum speed was mph, and cars went at more than 30 mph. After the bumps: The maximum speed was mph, and cars went at more than 30 mph. 2 marks (b) Show that the median speed fell by 10 mph. 1 mark KS3/05/Ma/Tier 6–8/P1 Sourced from SATs-Papers.co.uk 9 http://www.SATs-Papers.co.uk Straight line graph 9. y The graph shows the straight line with equation y = 3x – 4 4 –4 0 4 x –4 (a) A point on the line y = 3x – 4 has an x -coordinate of 50 What is the y -coordinate of this point? 1 mark (b) A point on the line y = 3x – 4 has a y -coordinate of 50 What is the x -coordinate of this point? 1 mark (c) Is the point ( –10, –34 ) on the line y = 3x – 4? Yes No Show how you know. 1 mark KS3/05/Ma/Tier 6 –8/ P1 Sourced from SATs-Papers.co.uk 10 http://www.SATs-Papers.co.uk 64 10. Here is an equation. y x = 64 Give four different pairs of values that satisfy this equation. First pair x= y= Second pair x= y= Third pair x= y= Fourth pair x= y= 3 marks KS3/05/Ma/Tier 6–8/P1 Sourced from SATs-Papers.co.uk 11 http://www.SATs-Papers.co.uk Sixths 11. A teacher said to a pupil: To the nearest per cent, 1 is 17% 6 The pupil said: So, to the nearest per cent, 2 must be 34% 6 Show that the pupil is wrong. 1 mark KS3/05/Ma/Tier 6 –8/ P1 Sourced from SATs-Papers.co.uk 12 http://www.SATs-Papers.co.uk Tyres 12. Car tyres are checked for safety by measuring the tread. The tread on a tyre and the distance travelled by that tyre were recorded for a sample of tyres. The scatter graph shows the results. 6 5 4 Tread (mm) 3 2 1 0 0 10 000 20 000 Distance (km) 30 000 40 000 Tyres with a tread of less than 1.6 mm are illegal. Suppose the government changes this rule to less than 2.5 mm. (a) How many of these tyres would now be illegal? 1 mark (b) About how many fewer kilometres would you expect a tyre to last before it was illegal? 1 mark KS3/05/Ma/Tier 6–8/P1 Sourced from SATs-Papers.co.uk 13 http://www.SATs-Papers.co.uk Which triangles? 13. (a) In which triangle below does a2 + b2 = c2 ? Tick ( ) the correct triangle. For the other triangle, write an equation linking a, b and c 1 mark (b) In which triangle below does a2 + b2 = c2 ? Tick ( ) the correct triangle. Not drawn accurately For the other triangle, explain why a2 + b 2 does not equal c2 1 mark KS3/05/Ma/Tier 6 –8/ P1 Sourced from SATs-Papers.co.uk 14 http://www.SATs-Papers.co.uk Sweet peas 14. Meg and Ravi buy sweet pea seeds and grow them in identical conditions. Meg’s results: Number of packets Number of seeds in each packet 5 20 Number of seeds that germinate from each packet 18, 17, 17, 18, 19 Ravi’s results: Number of packets Number of seeds in each packet Total number of seeds that germinate 10 20 170 (a) Using Meg’s results and Ravi’s results, calculate two different estimates of the probability that a sweet pea seed will germinate. Using Meg’s results: 1 mark Using Ravi’s results: 1 mark (b) Whose results are likely to give the better estimate of the probability? Meg’s Ravi’s Explain why. 1 mark KS3/05/Ma/Tier 6–8/P1 Sourced from SATs-Papers.co.uk 15 http://www.SATs-Papers.co.uk How many digits? 15. A three-digit number is multiplied by a two-digit number. How many digits could the answer have? Write the minimum number and the maximum number of digits that the answer could have. You must show your working. minimum number of digits maximum number of digits 2 marks KS3/05/Ma/Tier 6 –8/ P1 Sourced from SATs-Papers.co.uk 16 http://www.SATs-Papers.co.uk Simultaneous 16. Solve these simultaneous equations using an algebraic method. 4 x + 3y = 21 2x + y = 8 You must show your working. x= y= 3 marks KS3/05/Ma/Tier 6–8/P1 Sourced from SATs-Papers.co.uk 17 http://www.SATs-Papers.co.uk Angle bisector 17. In the diagram, lines AB and AC are straight lines. Using compasses and a straight edge, construct the angle bisector of angle BAC. You must leave in your construction lines. A C B 2 marks KS3/05/Ma/Tier 6 –8/ P1 Sourced from SATs-Papers.co.uk 18 http://www.SATs-Papers.co.uk Star shapes 18. The diagram shows two shapes that are mathematically similar. 20cm Not drawn accurately 15cm k cm 6cm (a) What is the value of k ? 1 mark (b) I want to draw another shape that is mathematically similar to the ones in the diagram, but of a different size. Give the length and width of a shape I could draw. length cm width cm 1 mark KS3/05/Ma/Tier 6–8/P1 Sourced from SATs-Papers.co.uk 19 http://www.SATs-Papers.co.uk Straight lines 19. The diagram shows the straight line with equation y = 4 ( x – 2 ) y = 4(x – 2) 0 Not drawn accurately B A (a) Work out the coordinates of the points marked A and B. A is ( , ) 1 mark B is ( , ) 1 mark (b) A different straight line goes through the points ( 0, 0 ) and ( 3, 6 ) Write the equation of this line. 1 mark KS3/05/Ma/Tier 6 –8/ P1 Sourced from SATs-Papers.co.uk 20 http://www.SATs-Papers.co.uk Acorns 20. Two groups of pupils collected a sample of acorns from the same oak tree. The box plots summarise the two sets of results. Group A Group B 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 Length (mm) (a) Explain how the box plots show the median of group B is 3 mm more than the median of group A. 1 mark (b) Which group has the bigger inter-quartile range? A B Explain your answer. 1 mark (c) The results from the two groups of pupils are very different. Give a reason why the results might have been different. 1 mark KS3/05/Ma/Tier 6–8/P1 Sourced from SATs-Papers.co.uk 21 http://www.SATs-Papers.co.uk Standard form 21. (a) Show that ( 4 t 10 8 ) t ( 8 t 10 4 ) = 3.2 t 1013 1 mark (b) What is ( 4 t 10 8 ) ÷ ( 8 t 10 4 ) ? Write your answer in standard form. 2 marks KS3/05/Ma/Tier 6 –8/ P1 Sourced from SATs-Papers.co.uk 22 http://www.SATs-Papers.co.uk Data sets 22. Here is information about a data set. There are 100 values in the set. The median is 90 The mean is 95 I increase the highest value in the data set by 200 Now what are the median and the mean of the data set? median = mean = 2 marks KS3/05/Ma/Tier 6–8/P1 Sourced from SATs-Papers.co.uk 23 http://www.SATs-Papers.co.uk Drawing a rhombus 23. The diagram shows a sketch of a rhombus, side length 8 cm. The length of one diagonal is 10 cm. 10cm Not drawn accurately 8cm Use compasses and a straight edge to make an accurate drawing of the rhombus. You can use the 8 cm and 10 cm lines to set your compasses. You must leave in your construction lines. 8 cm 10cm 2 marks KS3/05/Ma/Tier 6 –8/ P1 Sourced from SATs-Papers.co.uk 24 http://www.SATs-Papers.co.uk a and b 24. In this question, a and b are numbers where a = b + 2 The sum of a and b is equal to the product of a and b Show that a and b are not integers. 3 marks KS3/05/Ma/Tier 6–8/P1 Sourced from SATs-Papers.co.uk 25 http://www.SATs-Papers.co.uk Temperature 25. To change temperatures measured in °C to °F you can use an exact formula or an approximate formula. Approximate formula Exact formula F = 9C + 32 5 F = 2C + 30 F is the temperature in °F C is the temperature in °C At what temperature in °C do these formulae give an equal value for F? You must show an algebraic method. °C 2 marks KS3/05/Ma/Tier 6 –8/ P1 Sourced from SATs-Papers.co.uk 26 http://www.SATs-Papers.co.uk END OF TEST KS3/05/Ma/Tier 6–8/P1 Sourced from SATs-Papers.co.uk 27 http://www.SATs-Papers.co.uk © Qualifications and Curriculum Authority 2005 QCA, Key Stage 3 Team, 83 Piccadilly, London W1J 8QA Sourced from SATs-Papers.co.uk http://www.SATs-Papers.co.uk 265284