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Lintel Jun 25 - Jul 1 25 questions
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Monday 25 June 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 7,700,000 in standard form

    Answer: 7.7 × 106
  2. 2. Algebra

    Factorise: x² - 5x - 14

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

    Adjacent = 20cm, angle = 44°. Find opposite. Give your answer to 2 decimal places

    Answer: 19.31cm
  4. 4. Ratio

    Simplify: 12:10:12

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

    Calculate the mean of: 43, 26, 45, 49, 49, 18, 5, 7

    Answer: 30.25

Tuesday 26 June 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000066 in standard form

    Answer: 6.6 × 10-5
  2. 2. Algebra

    Factorise: x² - 3x - 10

    Answer: (x + 2)(x - 5)
  3. 3. Geometry

    Hypotenuse = 34cm, angle = 58°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 18.02cm
  4. 4. Ratio

    Express the first part of 2:9 as a fraction in simplest form

    Answer: 2⁄11
  5. 5. Statistics

    Calculate the mean of: 9, 23, 28, 33, 34, 36, 28, 45

    Answer: 29.5

Wednesday 27 June 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 3,500,000 in standard form

    Answer: 3.5 × 106
  2. 2. Algebra

    Factorise: x² - 16x + 60

    Answer: (x - 6)(x - 10)
  3. 3. Geometry

    Adjacent = 12cm, angle = 31°. Find opposite. Give your answer to 2 decimal places

    Answer: 7.21cm
  4. 4. Ratio

    Divide 136 in the ratio 3:3:2

    Answer: 51, 51 and 34
  5. 5. Statistics

    The mean of 5 numbers is 39. If 4 of them are 26, 44, 49, 24, what is the missing number?

    Answer: 52

Thursday 28 June 2012

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 + 12x + 27

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

    Adjacent = 16cm, angle = 31°. Find opposite. Give your answer to 2 decimal places

    Answer: 9.61cm
  4. 4. Ratio

    Orange and purple marbles are in the ratio 2:4. What fraction of the marbles are orange?

    Answer: 1⁄3
  5. 5. Statistics

    The mean of 4 numbers is 34. If 3 of them are 46, 24, 34, what is the missing number?

    Answer: 32

Friday 29 June 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0061 in standard form

    Answer: 6.1 × 10-3
  2. 2. Algebra

    Factorise: x² + 2x - 8

    Answer: (x + 4)(x - 2)
  3. 3. Geometry

    Hypotenuse = 18cm, angle = 42°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 13.38cm
  4. 4. Ratio

    Express the second part of 10:11 as a fraction in simplest form

    Answer: 11⁄21
  5. 5. Statistics

    Calculate the mean of: 28, 20, 12, 37, 28, 50, 28, 43

    Answer: 30.75