IGCSE Maths 2020 0580/32 May/June

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Questions and Worked Solutions for IGCSE 2020 0580/32 May/June Paper 1.

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IGCSE 2020 0580/32 May/June (pdf)

  1. (a) Paul has a set of 8 cards, each with a number written on it.
    The numbers on the cards are 1, 1, 2, 3, 3, 3, 4, 5.
    One card is taken at random.
    Write down the probability that the number on the card is
    (i) 1,
    (ii) an odd number,
    (iii) a prime number,
    (iv) a number less than 6.
    (b) Dina has a set of 12 cards.
    These are the numbers on the cards.
    3 4 1 3 2 1 3 4 2 2 1 3
    Work out
    (i) the median,
    (ii) the mode,
    (iii) the mean,
    (iv) the range.
    (c) Helena has a different set of cards.
    She takes one card at random and records the number shown.
    She does this 50 times.
    The results are shown in the table.
    Calculate the mean of her results.
  2. (a) Jeremy goes on holiday.
    He parks his car in the airport car park from
    1000 on Tuesday 17 July to 1700 on Saturday 28 July.
    The car park charges are shown below.
    Find the total cost of parking his car.
    (b) At the airport, Jeremy buys a ring for $53 and a watch for $65.
    Work out how much change he receives from $120.
    (c) The plane flies from Melbourne to Tokyo at an average speed of 783km/h.
    The distance from Melbourne to Tokyo is 8352km.
    The plane leaves Melbourne at 0952 local time.
    The local time in Tokyo is 2 hours behind the local time in Melbourne.
    Find the local time in Tokyo when the plane arrives.
    (d) In Tokyo, Jeremy buys a bracelet for 2050 yen.
    The exchange rate is 1 yen = $0.0125 .
    Calculate the price of the bracelet in dollars.
    Give your answer correct to the nearest dollar.
    (e) The plane ticket costs $680 plus a tax of 16%.
    Find the total cost of this ticket.

  1. Belle records the height, in centimetres, and the mass, in kilograms, of some goats.
    Some of her results are shown in the scatter diagram.
    (a) The table shows four more results.
    Plot these points on the scatter diagram.
    (b) What type of correlation is shown in this scatter diagram?
    (c) (i) Draw a line of best fit on the scatter diagram.
    (ii) Use your line of best fit to estimate the height of a goat with mass 32.5kg.
    (d) Work out the percentage of the 12 goats that have a height between 26cm and 35cm.
  2. Alexa, Ben and Chloe own a restaurant.
    (a) Alexa records some temperatures.
    Fridge 4°C Cool box -3°C Freezer -19°C
    (i) Find the difference in temperature between the fridge and the cool box.
    (ii) Find the difference in temperature between the cool box and the freezer.
    (iii) The temperature in the cold room is 5°C lower than the fridge.
    Find the temperature in the cold room.
    (b) Alexa, Ben and Chloe share the profits from their restaurant in the ratio 2 : 6 : 7.
    One year the restaurant makes a profit of $60000.
    Work out how much each receives.
    (c) They invest $12000 at a rate of n% per year simple interest.
    At the end of 3 years the value of the investment is $12900.
    Find the value of n.
  3. (a) T = 3a2b
    Find the value of T when a = 4 and b = 5.
    (b) (i) Multiply out the brackets.
    x(3 - 5x)
    (ii) Factorise fully.
    5x - 20x2
    (c) Find an expression for the perimeter of this triangle.
    Give your answer in its simplest form.
  4. (a) The diagram shows a cuboid.
    On the 1 cm2 grid, complete the net of the cuboid.
    One face has been drawn for you.
    (b) A cube has a surface area of 384cm2.
    Find the length of one of its sides.
    (c) The diagram shows a right-angled triangular prism.
    Work out the volume of the prism.
  5. (a) The diagram shows an isosceles triangle.
    Find the value of x.
    (b) The diagram shows two pairs of parallel lines.
    Find the value of a, the value of b and the value of c.
    (c) The diagram shows a rectangle 14cm by wcm.
    The diagonal is 23cm.
    Calculate the value of w.
    (d) The diagram shows a square with vertices on the circumference of a circle, centre O.
    The radius of the circle is 6cm.
    Work out the shaded area.
  6. (a) Describe fully the single transformation that maps
    (i) triangle A onto triangle B,
    (ii) triangle A onto triangle C,
    (iii) triangle A onto triangle D.
    (b) On the grid, draw the image of triangle A after a reflection in the line y = -1.
  7. (a) Complete the table of values for y = x2 - 3x - 6
    (b) On the grid, draw the graph of y = x2 - 3x - 6, for -3 ≤ x ≤ 6
    (c) Write down the equation of the line of symmetry of the graph.
    (d) Use your graph to solve the equation x2 - 3x - 6 = 0
  8. (a) Solve these equations.
    (i) 5x = -30
    (ii) 4x - 2 = 28
    (iii) 3(2x + 7) = 12
    (b) Solve the simultaneous equations.
    You must show all your working.
    5x - 2 = 44
    2x + 3y = 10

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