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Lintel Oct 10 - 16 25 questions
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Monday 10 October 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.00094 in standard form

    Answer: 9.4 × 10-4
  2. 2. Algebra

    Factorise: x² - 3x - 18

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

    Adjacent = 15cm, angle = 39°. Find opposite. Give your answer to 2 decimal places

    Answer: 12.15cm
  4. 4. Ratio

    Simplify: 12:12:24

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

    The mean of 6 numbers is 36. If 5 of them are 48, 47, 41, 23, 44, what is the missing number?

    Answer: 13

Tuesday 11 October 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 97,000,000 in standard form

    Answer: 9.7 × 107
  2. 2. Algebra

    Factorise: x² + 8x - 33

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

    Hypotenuse = 20cm, angle = 31°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 17.14cm
  4. 4. Ratio

    Simplify: 6:6:4

    Answer: 3:3:2
  5. 5. Statistics

    Calculate the mean of: 29, 32, 18, 40, 35, 48, 49. Give your answer to 2 decimal places

    Answer: 35.86

Wednesday 12 October 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000031 in standard form

    Answer: 3.1 × 10-5
  2. 2. Algebra

    Factorise: x² + 14x + 33

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

    Adjacent = 21cm, angle = 33°. Find opposite. Give your answer to 2 decimal places

    Answer: 13.64cm
  4. 4. Ratio

    Express the first part of 12:7 as a fraction in simplest form

    Answer: 12⁄19
  5. 5. Statistics

    Calculate the mean of: 38, 39, 8, 50, 36, 36, 32. Give your answer to 2 decimal places

    Answer: 34.14

Thursday 13 October 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 610,000,000 in standard form

    Answer: 6.1 × 108
  2. 2. Algebra

    Factorise: x² - x - 56

    Answer: (x + 7)(x - 8)
  3. 3. Geometry

    Hypotenuse = 31cm, angle = 27°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 27.62cm
  4. 4. Ratio

    Divide 116 in the ratio 1:2:1

    Answer: 29, 58 and 29
  5. 5. Statistics

    The mean of 5 numbers is 34. If 4 of them are 33, 45, 18, 39, what is the missing number?

    Answer: 35

Friday 14 October 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 420,000 in standard form

    Answer: 4.2 × 105
  2. 2. Algebra

    Factorise: x² - x - 90

    Answer: (x + 9)(x - 10)
  3. 3. Geometry

    Hypotenuse = 25cm, angle = 53°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 15.05cm
  4. 4. Ratio

    In ratio 5:12:7, what fraction is the first part?

    Answer: 5⁄24
  5. 5. Statistics

    Calculate the mean of: 31, 16, 42, 6, 37, 32. Give your answer to 2 decimal places

    Answer: 27.33