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Lintel Apr 12 - 18 25 questions
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Monday 12 April 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 46,000 in standard form

    Answer: 4.6 × 104
  2. 2. Algebra

    Factorise: x² + 3x - 18

    Answer: (x + 6)(x - 3)
  3. 3. Geometry

    Adjacent = 12cm, angle = 32°. Find opposite. Give your answer to 2 decimal places

    Answer: 7.5cm
  4. 4. Ratio

    £156.00 is shared between A and B in the ratio 1:2. How much does A receive?

    Answer: £52.00
  5. 5. Statistics

    The mean of 5 numbers is 23. If 4 of them are 19, 18, 27, 42, what is the missing number?

    Answer: 9

Tuesday 13 April 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.057 in standard form

    Answer: 5.7 × 10-2
  2. 2. Algebra

    Factorise: x² - 5x - 66

    Answer: (x + 6)(x - 11)
  3. 3. Geometry

    Hypotenuse = 24cm, angle = 48°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 16.06cm
  4. 4. Ratio

    Simplify the ratio 2 litres : 400 ml

    Answer: 5:1
  5. 5. Statistics

    Calculate the mean of: 18, 50, 13, 13, 12, 33, 29

    Answer: 24

Wednesday 14 April 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000035 in standard form

    Answer: 3.5 × 10-5
  2. 2. Algebra

    Factorise: x² - 18x + 81

    Answer: (x - 9)(x - 9)
  3. 3. Geometry

    Hypotenuse = 39cm, angle = 35°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 31.95cm
  4. 4. Ratio

    Express the second part of 13:7 as a fraction in simplest form

    Answer: 7⁄20
  5. 5. Statistics

    The mean of 4 numbers is 33. If 3 of them are 26, 17, 35, what is the missing number?

    Answer: 54

Thursday 15 April 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 2,700,000 in standard form

    Answer: 2.7 × 106
  2. 2. Algebra

    Factorise: x² - 4x - 12

    Answer: (x + 2)(x - 6)
  3. 3. Geometry

    Adjacent = 15cm, angle = 53°. Find opposite. Give your answer to 2 decimal places

    Answer: 19.91cm
  4. 4. Ratio

    Orange and purple beads are in the ratio 3:5. What fraction of the beads are purple?

    Answer: 5⁄8
  5. 5. Statistics

    Calculate the mean of: 35, 20, 14, 36, 26, 49, 31, 27

    Answer: 29.75

Friday 16 April 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000054 in standard form

    Answer: 5.4 × 10-5
  2. 2. Algebra

    Factorise: x² - 6x - 16

    Answer: (x + 2)(x - 8)
  3. 3. Geometry

    Hypotenuse = 19cm, angle = 53°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 11.43cm
  4. 4. Ratio

    Orange and purple marbles are in the ratio 4:15. What fraction of the marbles are purple?

    Answer: 15⁄19
  5. 5. Statistics

    Calculate the mean of: 22, 29, 31, 7, 21, 49, 50. Give your answer to 2 decimal places

    Answer: 29.86