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Lintel Sep 20 - 26 25 questions
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Monday 20 September 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.036 in standard form

    Answer: 3.6 × 10-2
  2. 2. Algebra

    Factorise: x² + 17x + 66

    Answer: (x + 11)(x + 6)
  3. 3. Geometry

    Hypotenuse = 28cm, angle = 25°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 25.38cm
  4. 4. Ratio

    Express the first part of 13:4 as a fraction in simplest form

    Answer: 13⁄17
  5. 5. Statistics

    The mean of 4 numbers is 31. If 3 of them are 40, 21, 23, what is the missing number?

    Answer: 40

Tuesday 21 September 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 150,000,000 in standard form

    Answer: 1.5 × 108
  2. 2. Algebra

    Factorise: x² + 5x - 36

    Answer: (x + 9)(x - 4)
  3. 3. Geometry

    Adjacent = 25cm, angle = 44°. Find opposite. Give your answer to 2 decimal places

    Answer: 24.14cm
  4. 4. Ratio

    Simplify: 10:6:12

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

    Calculate the mean of: 25, 44, 47, 36, 28, 38, 45. Give your answer to 2 decimal places

    Answer: 37.57

Wednesday 22 September 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.04 in standard form

    Answer: 4 × 10-2
  2. 2. Algebra

    Factorise: x² - 2x - 48

    Answer: (x + 6)(x - 8)
  3. 3. Geometry

    Hypotenuse = 20cm, angle = 36°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 16.18cm
  4. 4. Ratio

    Divide 117 in the ratio 2:4:3

    Answer: 26, 52 and 39
  5. 5. Statistics

    Calculate the mean of: 22, 9, 22, 39, 42, 38, 41. Give your answer to 2 decimal places

    Answer: 30.43

Thursday 23 September 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 55,000,000 in standard form

    Answer: 5.5 × 107
  2. 2. Algebra

    Factorise: x² - 10x - 11

    Answer: (x + 1)(x - 11)
  3. 3. Geometry

    Adjacent = 20cm, angle = 54°. Find opposite. Give your answer to 2 decimal places

    Answer: 27.53cm
  4. 4. Ratio

    Express the first part of 2:11 as a fraction in simplest form

    Answer: 2⁄13
  5. 5. Statistics

    The mean of 6 numbers is 30. If 5 of them are 38, 26, 45, 15, 26, what is the missing number?

    Answer: 30

Friday 24 September 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 170,000,000 in standard form

    Answer: 1.7 × 108
  2. 2. Algebra

    Factorise: x² - 11x + 28

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

    Adjacent = 12cm, angle = 46°. Find opposite. Give your answer to 2 decimal places

    Answer: 12.43cm
  4. 4. Ratio

    Simplify the ratio 9m : 45cm

    Answer: 20:1
  5. 5. Statistics

    Calculate the mean of: 29, 19, 16, 19, 41, 16, 28

    Answer: 24