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Lintel Sep 13 - 19 25 questions
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Monday 13 September 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 120,000 in standard form

    Answer: 1.2 × 105
  2. 2. Algebra

    Factorise: x² - x - 30

    Answer: (x + 5)(x - 6)
  3. 3. Geometry

    Adjacent = 24cm, angle = 52°. Find opposite. Give your answer to 2 decimal places

    Answer: 30.72cm
  4. 4. Ratio

    £147.00 is shared between A and B in the ratio 5:2. How much does A receive?

    Answer: £105.00
  5. 5. Statistics

    Calculate the mean of: 34, 28, 10, 20, 7, 24, 44. Give your answer to 2 decimal places

    Answer: 23.86

Tuesday 14 September 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 8,800,000 in standard form

    Answer: 8.8 × 106
  2. 2. Algebra

    Factorise: x² - 6x - 40

    Answer: (x + 4)(x - 10)
  3. 3. Geometry

    Adjacent = 13cm, angle = 37°. Find opposite. Give your answer to 2 decimal places

    Answer: 9.8cm
  4. 4. Ratio

    Divide 216 in the ratio 3:2:3

    Answer: 81, 54 and 81
  5. 5. Statistics

    The mean of 4 numbers is 24. If 3 of them are 33, 37, 17, what is the missing number?

    Answer: 9

Wednesday 15 September 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.00053 in standard form

    Answer: 5.3 × 10-4
  2. 2. Algebra

    Factorise: x² + 15x + 54

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

    Hypotenuse = 18cm, angle = 46°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 12.5cm
  4. 4. Ratio

    Simplify: 9:18:15

    Answer: 3:6:5
  5. 5. Statistics

    Calculate the mean of: 6, 43, 8, 7, 36, 7, 48, 34. Give your answer to 2 decimal places

    Answer: 23.63

Thursday 16 September 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 380,000 in standard form

    Answer: 3.8 × 105
  2. 2. Algebra

    Factorise: x² + 5x - 24

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

    Adjacent = 13cm, angle = 33°. Find opposite. Give your answer to 2 decimal places

    Answer: 8.44cm
  4. 4. Ratio

    Express the second part of 10:4 as a fraction in simplest form

    Answer: 2⁄7
  5. 5. Statistics

    Calculate the mean of: 13, 49, 22, 48, 29, 40

    Answer: 33.5

Friday 17 September 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.071 in standard form

    Answer: 7.1 × 10-2
  2. 2. Algebra

    Factorise: x² - 3x - 28

    Answer: (x + 4)(x - 7)
  3. 3. Geometry

    Hypotenuse = 40cm, angle = 47°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 27.28cm
  4. 4. Ratio

    Simplify: 12:6:6

    Answer: 2:1:1
  5. 5. Statistics

    The mean of 4 numbers is 34. If 3 of them are 22, 28, 28, what is the missing number?

    Answer: 58