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Lintel Jan 12 - 18 25 questions
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Monday 12 January 2015

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0005 in standard form

    Answer: 5 × 10-4
  2. 2. Algebra

    Factorise: x² - 8x - 33

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

    Adjacent = 27cm, angle = 32°. Find opposite. Give your answer to 2 decimal places

    Answer: 16.87cm
  4. 4. Ratio

    Simplify: 4:6:4

    Answer: 2:3:2
  5. 5. Statistics

    The mean of 6 numbers is 35. If 5 of them are 24, 45, 37, 49, 43, what is the missing number?

    Answer: 12

Tuesday 13 January 2015

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 31,000 in standard form

    Answer: 3.1 × 104
  2. 2. Algebra

    Factorise: x² - 9x - 10

    Answer: (x + 1)(x - 10)
  3. 3. Geometry

    Hypotenuse = 26cm, angle = 63°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 11.8cm
  4. 4. Ratio

    Express the second part of 3:14 as a fraction in simplest form

    Answer: 14⁄17
  5. 5. Statistics

    Calculate the mean of: 46, 46, 33, 27, 19, 42

    Answer: 35.5

Wednesday 14 January 2015

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 760,000 in standard form

    Answer: 7.6 × 105
  2. 2. Algebra

    Factorise: x² + 6x - 40

    Answer: (x + 10)(x - 4)
  3. 3. Geometry

    Hypotenuse = 29cm, angle = 63°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 13.17cm
  4. 4. Ratio

    £280.00 is shared between A and B in the ratio 3:4. How much does A receive?

    Answer: £120.00
  5. 5. Statistics

    The mean of 6 numbers is 31. If 5 of them are 22, 17, 28, 32, 27, what is the missing number?

    Answer: 60

Thursday 15 January 2015

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0036 in standard form

    Answer: 3.6 × 10-3
  2. 2. Algebra

    Factorise: x² + 20x + 99

    Answer: (x + 11)(x + 9)
  3. 3. Geometry

    Adjacent = 21cm, angle = 38°. Find opposite. Give your answer to 2 decimal places

    Answer: 16.41cm
  4. 4. Ratio

    In ratio 1:2:5, what fraction is the third part?

    Answer: 5⁄8
  5. 5. Statistics

    Calculate the mean of: 6, 17, 42, 23, 35, 18, 43, 34

    Answer: 27.25

Friday 16 January 2015

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 390,000 in standard form

    Answer: 3.9 × 105
  2. 2. Algebra

    Factorise: x² + 6x + 5

    Answer: (x + 5)(x + 1)
  3. 3. Geometry

    Hypotenuse = 40cm, angle = 31°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 34.29cm
  4. 4. Ratio

    £230.00 is shared between A and B in the ratio 3:2. How much does A receive?

    Answer: £138.00
  5. 5. Statistics

    Calculate the mean of: 41, 46, 15, 17, 50, 47, 22, 30

    Answer: 33.5