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Lintel Sep 16 - 22 25 questions
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Monday 16 September 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0099 in standard form

    Answer: 9.9 × 10-3
  2. 2. Algebra

    Factorise: x² + 11x + 24

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

    Hypotenuse = 38cm, angle = 36°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 30.74cm
  4. 4. Ratio

    In ratio 4:1:5, what fraction is the first part?

    Answer: 2⁄5
  5. 5. Statistics

    The mean of 4 numbers is 34. If 3 of them are 15, 38, 33, what is the missing number?

    Answer: 50

Tuesday 17 September 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 85,000 in standard form

    Answer: 8.5 × 104
  2. 2. Algebra

    Factorise: x² + 2x - 80

    Answer: (x + 10)(x - 8)
  3. 3. Geometry

    Adjacent = 13cm, angle = 49°. Find opposite. Give your answer to 2 decimal places

    Answer: 14.95cm
  4. 4. Ratio

    Simplify the ratio 6kg : 350g

    Answer: 120:7
  5. 5. Statistics

    Calculate the mean of: 39, 28, 45, 31, 27, 27. Give your answer to 2 decimal places

    Answer: 32.83

Wednesday 18 September 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 170,000 in standard form

    Answer: 1.7 × 105
  2. 2. Algebra

    Factorise: x² - 6x - 7

    Answer: (x + 1)(x - 7)
  3. 3. Geometry

    Adjacent = 29cm, angle = 31°. Find opposite. Give your answer to 2 decimal places

    Answer: 17.42cm
  4. 4. Ratio

    Simplify the ratio 2kg : 250g

    Answer: 8:1
  5. 5. Statistics

    Calculate the mean of: 39, 39, 39, 17, 24, 49, 31

    Answer: 34

Thursday 19 September 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.00078 in standard form

    Answer: 7.8 × 10-4
  2. 2. Algebra

    Factorise: x² - 15x + 54

    Answer: (x - 6)(x - 9)
  3. 3. Geometry

    Hypotenuse = 33cm, angle = 29°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 28.86cm
  4. 4. Ratio

    £105.00 is shared between A and B in the ratio 2:3. How much does A receive?

    Answer: £42.00
  5. 5. Statistics

    The mean of 4 numbers is 28. If 3 of them are 27, 35, 18, what is the missing number?

    Answer: 32

Friday 20 September 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 15,000 in standard form

    Answer: 1.5 × 104
  2. 2. Algebra

    Factorise: x² + 4x - 5

    Answer: (x + 5)(x - 1)
  3. 3. Geometry

    Adjacent = 17cm, angle = 31°. Find opposite. Give your answer to 2 decimal places

    Answer: 10.21cm
  4. 4. Ratio

    In ratio 4:1:11, what fraction is the first part?

    Answer: 1⁄4
  5. 5. Statistics

    Calculate the mean of: 19, 31, 12, 8, 28, 24, 49, 18. Give your answer to 2 decimal places

    Answer: 23.63