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Lintel Sep 24 - 30 25 questions
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Monday 24 September 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 830,000 in standard form

    Answer: 8.3 × 105
  2. 2. Algebra

    Factorise: x² - 13x + 40

    Answer: (x - 5)(x - 8)
  3. 3. Geometry

    Hypotenuse = 17cm, angle = 56°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 9.51cm
  4. 4. Ratio

    Divide 160 in the ratio 3:3:4

    Answer: 48, 48 and 64
  5. 5. Statistics

    The mean of 5 numbers is 38. If 4 of them are 43, 50, 38, 47, what is the missing number?

    Answer: 12

Tuesday 25 September 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.00057 in standard form

    Answer: 5.7 × 10-4
  2. 2. Algebra

    Factorise: x² - 6x - 16

    Answer: (x + 2)(x - 8)
  3. 3. Geometry

    Adjacent = 27cm, angle = 40°. Find opposite. Give your answer to 2 decimal places

    Answer: 22.66cm
  4. 4. Ratio

    Express the first part of 4:12 as a fraction in simplest form

    Answer: 1⁄4
  5. 5. Statistics

    Calculate the mean of: 35, 42, 35, 31, 45, 12, 32. Give your answer to 2 decimal places

    Answer: 33.14

Wednesday 26 September 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 990,000 in standard form

    Answer: 9.9 × 105
  2. 2. Algebra

    Factorise: x² - 21x + 108

    Answer: (x - 9)(x - 12)
  3. 3. Geometry

    Hypotenuse = 25cm, angle = 54°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 14.69cm
  4. 4. Ratio

    Simplify: 12:12:9

    Answer: 4:4:3
  5. 5. Statistics

    Calculate the mean of: 49, 10, 33, 35, 14, 27, 33, 36. Give your answer to 2 decimal places

    Answer: 29.63

Thursday 27 September 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.014 in standard form

    Answer: 1.4 × 10-2
  2. 2. Algebra

    Factorise: x² + 3x - 40

    Answer: (x + 8)(x - 5)
  3. 3. Geometry

    Adjacent = 19cm, angle = 56°. Find opposite. Give your answer to 2 decimal places

    Answer: 28.17cm
  4. 4. Ratio

    Express the second part of 11:15 as a fraction in simplest form

    Answer: 15⁄26
  5. 5. Statistics

    The mean of 5 numbers is 39. If 4 of them are 32, 48, 25, 37, what is the missing number?

    Answer: 53

Friday 28 September 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0074 in standard form

    Answer: 7.4 × 10-3
  2. 2. Algebra

    Factorise: x² - 4x - 96

    Answer: (x + 8)(x - 12)
  3. 3. Geometry

    Adjacent = 28cm, angle = 48°. Find opposite. Give your answer to 2 decimal places

    Answer: 31.cm
  4. 4. Ratio

    Express the second part of 8:10 as a fraction in simplest form

    Answer: 5⁄9
  5. 5. Statistics

    The mean of 4 numbers is 36. If 3 of them are 39, 20, 24, what is the missing number?

    Answer: 61