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Lintel Jan 8 - 14 25 questions
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Monday 8 January 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000081 in standard form

    Answer: 8.1 × 10-5
  2. 2. Algebra

    Factorise: x² + 10x + 21

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

    Adjacent = 19cm, angle = 45°. Find opposite

    Answer: 19cm
  4. 4. Ratio

    Simplify the ratio 4 litres : 600 ml

    Answer: 20:3
  5. 5. Statistics

    Calculate the mean of: 16, 44, 19, 18, 23, 14. Give your answer to 2 decimal places

    Answer: 22.33

Tuesday 9 January 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 94,000,000 in standard form

    Answer: 9.4 × 107
  2. 2. Algebra

    Factorise: x² - x - 2

    Answer: (x + 1)(x - 2)
  3. 3. Geometry

    Hypotenuse = 25cm, angle = 62°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 11.74cm
  4. 4. Ratio

    In ratio 12:12:5, what fraction is the third part?

    Answer: 5⁄29
  5. 5. Statistics

    The mean of 4 numbers is 29. If 3 of them are 47, 15, 45, what is the missing number?

    Answer: 9

Wednesday 10 January 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 77,000 in standard form

    Answer: 7.7 × 104
  2. 2. Algebra

    Factorise: x² + 4x - 60

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

    Adjacent = 25cm, angle = 36°. Find opposite. Give your answer to 2 decimal places

    Answer: 18.16cm
  4. 4. Ratio

    In ratio 12:9:6, what fraction is the third part?

    Answer: 2⁄9
  5. 5. Statistics

    The mean of 5 numbers is 39. If 4 of them are 35, 34, 45, 16, what is the missing number?

    Answer: 65

Thursday 11 January 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.00008 in standard form

    Answer: 8 × 10-5
  2. 2. Algebra

    Factorise: x² - 4x - 12

    Answer: (x + 2)(x - 6)
  3. 3. Geometry

    Hypotenuse = 30cm, angle = 61°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 14.54cm
  4. 4. Ratio

    Simplify the ratio £5 : 60p

    Answer: 25:3
  5. 5. Statistics

    Calculate the mean of: 36, 36, 30, 6, 21, 47. Give your answer to 2 decimal places

    Answer: 29.33

Friday 12 January 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 570,000 in standard form

    Answer: 5.7 × 105
  2. 2. Algebra

    Factorise: x² + 10x - 24

    Answer: (x + 12)(x - 2)
  3. 3. Geometry

    Adjacent = 17cm, angle = 57°. Find opposite. Give your answer to 2 decimal places

    Answer: 26.18cm
  4. 4. Ratio

    In ratio 9:3:7, what fraction is the first part?

    Answer: 9⁄19
  5. 5. Statistics

    Calculate the mean of: 50, 28, 41, 8, 16, 39. Give your answer to 2 decimal places

    Answer: 30.33