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Lintel Aug 20 - 26 25 questions
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Monday 20 August 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0057 in standard form

    Answer: 5.7 × 10-3
  2. 2. Algebra

    Factorise: x² - 5x - 14

    Answer: (x + 2)(x - 7)
  3. 3. Geometry

    Adjacent = 20cm, angle = 52°. Find opposite. Give your answer to 2 decimal places

    Answer: 25.6cm
  4. 4. Ratio

    Divide 207 in the ratio 2:3:4

    Answer: 46, 69 and 92
  5. 5. Statistics

    Calculate the mean of: 30, 16, 44, 5, 17, 9. Give your answer to 2 decimal places

    Answer: 20.17

Tuesday 21 August 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 7,500,000 in standard form

    Answer: 7.5 × 106
  2. 2. Algebra

    Factorise: x² - 15x + 44

    Answer: (x - 4)(x - 11)
  3. 3. Geometry

    Hypotenuse = 32cm, angle = 60°. Find adjacent side

    Answer: 16cm
  4. 4. Ratio

    Simplify: 18:15:6

    Answer: 6:5:2
  5. 5. Statistics

    The mean of 4 numbers is 36. If 3 of them are 25, 32, 49, what is the missing number?

    Answer: 38

Wednesday 22 August 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.025 in standard form

    Answer: 2.5 × 10-2
  2. 2. Algebra

    Factorise: x² + 10x + 21

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

    Adjacent = 14cm, angle = 48°. Find opposite. Give your answer to 2 decimal places

    Answer: 15.55cm
  4. 4. Ratio

    Red and blue marbles are in the ratio 11:10. What fraction of the marbles are red?

    Answer: 11⁄21
  5. 5. Statistics

    The mean of 6 numbers is 40. If 5 of them are 37, 42, 34, 34, 44, what is the missing number?

    Answer: 49

Thursday 23 August 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 40,000,000 in standard form

    Answer: 4 × 107
  2. 2. Algebra

    Factorise: x² - 2x - 3

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

    Hypotenuse = 21cm, angle = 56°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 11.74cm
  4. 4. Ratio

    Express the second part of 7:4 as a fraction in simplest form

    Answer: 4⁄11
  5. 5. Statistics

    Calculate the mean of: 27, 37, 30, 16, 8, 20, 27. Give your answer to 2 decimal places

    Answer: 23.57

Friday 24 August 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 51,000 in standard form

    Answer: 5.1 × 104
  2. 2. Algebra

    Factorise: x² - 3x - 70

    Answer: (x + 7)(x - 10)
  3. 3. Geometry

    Hypotenuse = 28cm, angle = 59°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 14.42cm
  4. 4. Ratio

    Simplify the ratio 4kg : 850g

    Answer: 80:17
  5. 5. Statistics

    The mean of 4 numbers is 28. If 3 of them are 19, 37, 33, what is the missing number?

    Answer: 23