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Lintel Jan 18 - 24 25 questions
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Monday 18 January 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 230,000,000 in standard form

    Answer: 2.3 × 108
  2. 2. Algebra

    Factorise: x² - 7x - 18

    Answer: (x + 2)(x - 9)
  3. 3. Geometry

    Hypotenuse = 32cm, angle = 33°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 26.84cm
  4. 4. Ratio

    Simplify: 4:8:10

    Answer: 2:4:5
  5. 5. Statistics

    Calculate the mean of: 25, 5, 7, 17, 24, 35. Give your answer to 2 decimal places

    Answer: 18.83

Tuesday 19 January 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0029 in standard form

    Answer: 2.9 × 10-3
  2. 2. Algebra

    Factorise: x² + x - 42

    Answer: (x + 7)(x - 6)
  3. 3. Geometry

    Adjacent = 17cm, angle = 32°. Find opposite. Give your answer to 2 decimal places

    Answer: 10.62cm
  4. 4. Ratio

    Simplify: 8:24:24

    Answer: 1:3:3
  5. 5. Statistics

    The mean of 6 numbers is 37. If 5 of them are 25, 40, 37, 41, 50, what is the missing number?

    Answer: 29

Wednesday 20 January 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 56,000,000 in standard form

    Answer: 5.6 × 107
  2. 2. Algebra

    Factorise: x² - x - 90

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

    Hypotenuse = 36cm, angle = 35°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 29.49cm
  4. 4. Ratio

    Express the first part of 14:9 as a fraction in simplest form

    Answer: 14⁄23
  5. 5. Statistics

    Calculate the mean of: 49, 47, 26, 11, 9, 9, 48, 9

    Answer: 26

Thursday 21 January 2016

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 + 3x - 40

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

    Adjacent = 18cm, angle = 50°. Find opposite. Give your answer to 2 decimal places

    Answer: 21.45cm
  4. 4. Ratio

    Divide 175 in the ratio 4:1:2

    Answer: 100, 25 and 50
  5. 5. Statistics

    The mean of 4 numbers is 30. If 3 of them are 23, 21, 34, what is the missing number?

    Answer: 42

Friday 22 January 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 7,300,000 in standard form

    Answer: 7.3 × 106
  2. 2. Algebra

    Factorise: x² + 6x - 27

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

    Hypotenuse = 40cm, angle = 32°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 33.92cm
  4. 4. Ratio

    Express the first part of 9:11 as a fraction in simplest form

    Answer: 9⁄20
  5. 5. Statistics

    The mean of 6 numbers is 38. If 5 of them are 32, 39, 41, 18, 33, what is the missing number?

    Answer: 65